- Point masses in GR
- Should spacetime transformations make a group?
- Question about "A Calorimetric Test of Special Relativity"
- bizarre coincidence with Huble Shift and Planck seconds?
- Why light?
- Expansion of Universe and Time dilation
- electron and photons time of flight
- Lorentz transformation without the speed of light postulate
- How does gravity work?
- big bang theory
- The Twin Paradox
- Why not length contraction?
- Einstien's original papers
- Minkowski metric
- The difference between a metric and the metric tensor
- relativity in 2 spatial dimensions
- The show of the duel
- Event Horizon
- Gravity Deflecting Light and Gravity Lensing
- Time Dilation....what it means
- Moving through Space-Time
- Are the formulas that account for aberraion and doppler shift compatible?
- Webliography: What is the experimental basis of Special Relativity?
- Palatini formalism
- combining SR and GR time dilation
- Stress energy tensor interpretation
- Moving At Light Speed
- Anti-Mass and Speed of Light
- The Theory of Everything
- Train Experiment in Rotation
- Length Contraction Evidence?
- How come equations don't account for....
- How do we know that the stress-energy is a tensor?
- Benefits of time dilation / length contraction pairing?
- Black holes and gravitons
- Time Shift in Wormholes
- speed of light constant throughout universe?
- Speed Of Light Experiment
- What caused time to run slower in a field of gravity
- Center of Krunskl Szekeres coordinate
- Constant Motion being relative leaves me with a paradox. I must me missing something,
- Mass photon
- Were some of Einstein's thought experiments carried out later?
- In which areas of physics is relativistic mass used?
- Question about C and Mass
- gravity at very large distance
- light <--> mass attraction
- Frequent flyer miles for the travelling twin
- A baffling quote from Einstein, badly requiring explanation
- Tell me what I'm doing wrong (velocity addition in 3+1 dimensions)
- Faster than Light Question
- time question
- Christofel Symbols Tensors?
- absolute movement
- Einsteins General Relativity Papers- Original
- Space and Time
- Question about applying the Lorentz Transformation to velocity 4-vectors
- Rotating rigid sphere stress-energy tensor
- Time dilation
- Does space warp reduce the space volume?
- Riemann geometry and hydrostatic
- can information be transmitted faster than c in inflationary cosmology?
- Relativity of simultaneity explained
- Disk Rotating Near the Speed of Light
- Object falling from rest
- Speed of light, mass equation
- Faster than light media
- The speed of light and gravity
- Why does matter even bother?
- How mass and time are defined
- Gravity and time
- constantly accelerating object and its proper time
- Mass of fuel would ALSO increase as spaceship comes near the speed of light!
- Naive Mass of Photon Question
- In twin paradox, Please Help
- Relativistic Center of Mass ?
- Hypothetically If you were in a spaceship going 0.99999999999...c and you tried......
- Time dilation ll
- pls help me dissect e=mc^2
- the doppler effect on light (red and blue shifts)
- I'm confused as to why you can't go faster than light, if you compound velocities
- Does time exist without mass?
- using einstein field equation
- Endless acceleration
- What does E=mc^2 mean?
- Length contraction
- Black Hole Gravity
- Gravity and Pressure
- The source of gravitational red shift
- Math of relativistic space travel
- where does space end
- Curved Spacetime and Gravity
- Can you answer these?
- Proper time of an accelerating particle
- Ultimate speed limit
- Speed of gravity waves
- Null coordinates
- Lorentz generators
- Modificaition in pole and barn paradox
- How do you tell you are not in inertial frame of reference
- Basic question about speed of light situation
- time dilation: most recent & precise experiments
- Minkowski Space with object
- Lightspeed wave lenghts
- Lorentz Transforms + Relativity of Simultaneity
- Significance of Special Relativity
- 'Poking' the Event Horizon
- Curvature using exterior differential forms
- change of basis for a metric
- Relativistic version of 2nd law of thermodynamics
- Does time exist apart from matter?
- Does the CMB allow special rest frames to be defined?
- Zero connection => Zero torsion tensor ?
- Help: Mode Decomposition and Retarded Feilds and Green's functions
- problems I have with time.
- moving light bulb sphere of photons
- Length contraction 2
- energy in different frames.
- Quantum mechanics vs. postulates of special relativity
- Composition of Lorentz pure rotations
- Simultaneity - Albert Einstein and the Theory of Relativity
- Why does light fall?
- Ether and how it was disproved.
- Black Holes and Gravitational Waves
- Can the gravitational field create its own gravity?
- time question
- Helium-3
- GR - time dialation at center of a planet
- General relativity
- My little theory: what would happen?
- Just a quick question...
- What Keeps A Black Hole Going?
- An array of lightclocks
- The Hilbert Action
- d'Inverno page 226 (tidal force on freely falling particle )
- doppler effect for light wave
- General Relativity vs. gravitons/force
- How does empty space curve?
- Future Without Present? If the event at "present" of light cone is missing will....
- question on gravitational time dilation...
- einstein's train/embankment thought experiment as an example of backward causation...
- The Alcubierre Drive and Negative Energy
- foliating spacetime
- A question on velocity addition
- could GR generalized to non-integer dimension??
- Gravitational Time Dilation
- Parametric Equation of a Sphere in General relativity...
- Tidal forces around BH
- clarification on length contraction
- After finding the Einstein Tensor...
- Relativistic motion of a magnetic sail
- Gravity & General Relativity
- Schwarzschild's radius inquiry
- free falling & geodesics
- Is there inertial mass-gravity equivalece principle with photons?
- synch clocks
- Help with SRT and Maxwell
- evaporating BH and infalling observers - I am puzzed
- What would a time machine look like?
- Does matter warp space time in the form of minimal surfaces?
- Can physical 3D space exist at all?
- Higgs and relativity?
- Passing the speed of light
- Speed of light, propellent incease in mass?
- Time Travel (view point of a non-scientist)
- Degrees of freedom in the curvature tensor
- Four-momentum of a photon
- Is spacetime really curved?
- Gravitational lensing - 2 questions
- Gravitomangetic B-field units
- simultaneous paradox
- Breaking the speed of light?
- Gravitational Time Dilation & Blueshift
- Time dilation #3
- Refraction and Special Realitivity
- Clocks and boxcars
- Density Increasing
- Some questions,espacielly about time
- Difference between Invariance and Covariance
- Specific Solution in GR
- Large bodies of mass and their effects on apparent time
- Why would an infinite universe tend to contract?
- The Present Moment in Spacetime?
- How is it that black holes are black?
- Black Hole Thermodynamics Resources?
- So what if I was in motion and tried to measure my own mass?
- light spheres
- i need help understanding this stuff
- speed of light and mass increase
- Fundamental c
- Velocity of the Earth
- Equivalence Principle & Gravitational Time Dilation
- NM's for Wormholes
- Relative motion of C on C formula
- Photon energies relative to movement, and relativistic mass Q's.
- Centrifugal force around planets
- Geometrized Units
- Frames of reference?
- Gravitational acceleration in GR
- Is Light Constant in GR
- Gravitational Time Dilation - Confused
- Physics Emergency!
- Proof of relativity
- Faster than light
- Is this an example of Relativity?
- Christoffel symbols etc. via Lagrangian
- Are black holes bosons or fermions?
- How does gravity tend to propagate?
- Bent space
- Why is the speed of light restricted?
- Event Horizons / Time Dilation
- Is each level of a group of systems representative of gravitational time dilation?
- Time dilation... but for who??
- Your favourite gedanken?
- Raising indices in curved space
- Gamma-Ray Burst (GRB)
- a copernicus/relativity question
- tensors versus differential forms
- Coordinate independence
- There is no "Transverse Gravitatonal Redshift"
- Philosophic comments on time in Relativity.
- So what's next for Einstein's Relativity?
- Gravitational blueshift and a Moving Mass
- Escaping a black hole
- Epsilon-delta?
- Mass (both relativistic and rest) of a photon
- Can general relativity derive from superstring theory?
- Time Dilation and Gravity's Effect on Light
- Energy & momentum in non-Minkowski coordinates
- Bending of space
- Potential Energy and energy conservation in General Relativity
- Twin Paradox- a quick(ish) question
- Question Regarding Electromagnetic Fields in Special Relativity
- Relativistic Energy of Antimatter
- Conceptual Question about the Change in Mass
- Transient mass fluctuations
- Centripetal thrust need at high-speed
- Coriolis effect and relativity
- Getting stuff out of a black hole using a second one
- gravitation/general relativity (minus math)
- Cosmological Constant and the Colapse of the Universe
- Path of an object
- Our light cone was a black hole
- connection between fabric of space, max. speed (of light) and time dilation
- The doppler radar trap paradox on the path to gravity.
- Superman's Helicopter
- Time dilation and gravitational constant
- Adding momentum in STR and DSR?
- Where is a light year inside the earth?
- Photons, gravity, and the bending of light.
- Summation convention and index placement
- Gravitational redshift and black holes
- Can photons create their own gravity?
- On pressure inside a stellar body - relativistically
- Can we predict which reference frame is correct?
- beginner needs answers to basic questions about the speed of light
- High relativistic speed + entanglement
- 4-velocity
- Acceleration and twin paradox question
- Gravity question: Why do things fall?
- Does a black hole have "shape?"
- Speed of Light Always The Same?
- Hawking radiation: why only one way?
- 1st Law of Black Hole Mechanics
- time:magnitude and direction?
- simultenaity
- Is there a Space-Time Curvature equation?
- how to draw a spacetime diagram
- Circling spaceship
- Causal set theory
- Why is faster than light travel so bizarrely 'addressed'
- What would it actually look like?
- Special relativity and Earth in context to a stationary point
- Relativity-I think!!
- how long would it take?
- How are gauge transformations linked to degrees of freedom?
- closed timelike curves
- Tensor index exercises
- Getting to the speed of light
- Will our sun become black hole if it were moving fast enough?
- Speed of light spacecraft
- Polarization vectors
- Using a computer to calculate Einstein tensor etc.
- How time Travel work ????
- Beginner's question on bending of space time and measuring distance to stars
- The "Photon's Perspective" Taboo
- How do you prove that the speed of light is absolute
- coupled nonlinear partial differential equations or simple matrices?
- Illustrations
- Quantum Gravity
- Can't get time dilation to add up
- which Book for Pauli-Fiertz langrangian
- de Sitter space
- Reduced density matrices and Lorentz transformation
- Kaluza-Klein primer
- Matrix equation in SL(2,C)
- E=mc2
- Detection of Gravitational Waves
- relativity of distances/lengths
- Time travel
- How fast to go 1000 years into the future
- Does spacetime curvature of EM field affect zero-charge particles?
- Interpretation of spacetime diagrams.
- Axxis moving parallel to another
- Close to light speed visualization question
- Time limit
- DeBroglie and Time Dilation Paradox
- Superman time travel
- History of Gravity
- Free-falling vs Fermi-Walker
- Are proper travel distances contracted by SR?
- 2D Null Geodesic Solution
- Question about SR and increasing mass
- Feynman's perihelion of mercury calculation using field theory
- Giving a lecture...
- Doppler Effect on Light
- Spacetime Translational Invariance vs(?) Lorentz Covariance
- relative perspective
- mass + potential kinetic energy
- Light speed laser pointer war
- Tricky Pauli matrices
- KE and relativity
- Black Holes and Relativity
- Gravity Wave & Light Wave Journeys
- constant velocity vs accelerating source
- Difference in age ??
- Confused in a thought-experiment...
- need help understanding an equation
- Large Scale Structure of Spacetime Study Group
- Velocity addition formula
- Is the behavior of light that remarkable?
- most basic of thought experiments in special relativity
- Relativistic Mass and Energy Convservation
- seconds passed
- Time
- Send Particle Backwards in Time - Is this a hoax?
- Effect before Cause:absolute horizon
- Neutron Stars and Special Relativity
- EPR Paradox and implications for QM
- Insight
- Einstein field equations (EFE's)
- Question about gravity
- How does time dilation really work?
- Affine parameter along a geodesic
- Administrative suggestion
- cosmological constant
- Help with a really nerdy calculation?
- proper time
- The beautiful sight of the interstellar traveller
- Length EXPANSION?!!!
- Photon/particle's energy in General Relativity
- SR & the empty FRW model
- Role of Exclusion principle in formation of black holes.
- Lorentz Contraction of a Moving Parabola
- Faster than the speed of light with only a fishing line!
- A different take on the Schwarzschild Metric
- Invariance of E and B
- Unbound and unstable orbits
- Spatial curvature in Schwarzschild & FRW
- Is the speed of light a velocity or acceleration?
- Breaking Light and Einstein-Rosen Bridges?
- Vectors and the Speed of Light?
- Metric tensor definition
- am i moving
- Help! My Brain is Melting!
- Confusion
- problem with constant C
- A dark part of special relativity(at least for me)
- why isn't gravity the result of a variable speed of light?
- Twin paradox
- A question about special relativity, Please Help
- Electromagnetic General Relativity
- radius of the accretion disc?
- Length contraction?
- What exactly is meant when people say that a Light Cone is "tilting"?
- Principle of Relativity and Constancy of Light
- Ether
- The Relativity of Simultaneity
- Total energy at zero rest mass
- Do photons age?
- Is there time at the speed of light?
- Time Travel Theory
- Twistors
- Hubble Effect
- Kretschmann Scalar
- Kerr metric, singularities in Boyer-Lindquist and Cartesian coordinates
- Help me understand the twin rocket experiment
- Magnetic relativity
- Length contraction: a question about tramwheels
- A little paradox in relativity.
- Derivation of Wormhole Mouth Mass/Charge?
- [help]how to obtain gravity eqution from gravity field Action S?
- Black Hole Horizon Information
- A few "paradoxes" in STR
- Falling down an infinitely deep well
- A thing that confuses me (quasi-paradox)
- Accelerated twin is OLDER?
- Hyperbolic angle
- What light does
- The God Photon
- Our past is not our past?
- Is speed of time c, atleast for someone travelling at speed of light?
- Gravity distorts space-time?
- Verify special relativity by concept "light clock"
- Time and Space
- the principle of relativity
- Compact Sapcetime and Time Travel
- Postulate 2
- the gravitational redshift
- Does an observer on a carousel see a horizon?
- Horizon for Contant Acceleration
- Blackhole Escape Velocity
- Where does gravity pull?
- Superluminal velocities & redshift
- Gravity: Time Dilation or Death
- Special relativity
- speed of time?
- Redshift of Sound in a Gravitational Field
- Problems with scale
- special relativity
- Capacitor paradox
- Wormole and reactionless drive
- Twin Paradox (I know...not again)
- Mass vs Gravity
- mass warping time, question/ interpretation
- Speedy ship flies through the sun
- Penrose Diagram
- relativity
- The trivial constant force acceleration math
- Conceptual GR question (regarding orbit paths)
- Time Dilation, who is aging slower?
- Special Relativity Time Travel to Future - Could You Watch the News on Earth?
- Confused about Equivalence Principle
- Electromagnetic version of the positive energy theorem?
- Behavior of a tangent light beam to an event horizon?
- Mass energy equivalence
- Lorentz transformations derived using dimensional analysis?
- Tesnsors and Units Consistancy
- Mass due to velocity
- Does time speed up as space expands
- Time dilation effects on spinning object
- Relativity Theory and Quantum Theory
- White Holes question
- what are the implication of einstein's definition of space time?
- What is Feynman's excess radius for a black hole?
- gravitons and warping
- Special Relativity Basics
- Unification of Gravity versus General Relativity -- The Ubiquity of Contradiction
- Riemann curvature tensor and nonlinear operator
- Simultaneity, does it confuse causality?
- When does Newton's Gravitation fail us?
- Understanding Einstein's Twin Paradox, past the usual level?
- two spaceships that pass in the night
- Trouble understanding gravity
- Electric is Magnetic - Relativistically speaking
- Gravity in relativity.
- SR and classical Doppler shift
- increasing mass approachng c.
- Mass inside a black hole
- Problem with Rubber and Metal Ball Analogy
- Earths rotation and special relativity
- gravimagetism motor!
- The visible universe and the speed of light
- Speed increases mass, which increases gravity?
- Local inertial frame
- Time travel.
- Why there can be only one invariant speed
- Functionals
- Crossing event horizon and Hawking radiation
- blueshift
- Ampere from SRT again
- question about the effect of c on light
- Question about light clock.
- Lorentz Generators, Srednicki eq. 2.13
- Schwarzschild Metric: The Sun
- The metric tensor
- What sort of "vector" is this?
- moving emitter
- Cosmological Constant and Planck Length in relativity
- a few questions on time
- Question about 'uniform' pseudo-field felt by accelerating observer
- .99c
- Relativistic Angular Momentum?
- GR: body at rest
- Lengths perpendicular to relative motion are unchanged
- Information loss via black Holes
- c
- Getting the Ricci and metric tensor from T ?
- Einstein on the relativity of distance.
- Can gravitational blue shift happen without gravitational time dilation?
- why cant special reletivity and newtonian theory of gravity agree?
- Apparent paradox: e=mc^2 violates conservation of energy?
- Does J go to inf when v goes to c?
- is equivalence principal really true?
- What does it mean if a transformation is 'linear'?
- Question on linearity of Lorentz transformations
- addition of velocities
- .5 c
- Confusions over general relitivity
- Minimum travel time
- Perception vs. Reality-relativity of time
- acceleration
- Simply Connected Universe/Poincare Conjecture Question
- The danger of FTL?
- Energy, Mass and Frames
- Lorentz Transformation
- Questions!!!!
- Some Questions on Time Dilation.
- Is newton's 3rd law wrong?
- Why is the speed of light... erm... the speed of light?
- Killing vectors for Anti desitter space in 3+1
- E=m
- Special relativity and acceleration
- How does mass know that space is curved?
- the Einstein equation
- acceleration in relativity
- How does the GR field equation reduce to Newton's law of gravity?
- rubber sheet analogy - density change
- Is there any derivation of length contraction through proper lenght?
- Alpha centuri.....4 light year relative to who?
- how can two objects colliding and merging have a bigger mass?
- TWIN PARADOX-What's that??
- Momentum in SR
- Thought experiment concerning worldlines
- Simulating relativity in a velocity verlet algorithm
- My twin galaxy puzzle! Please help
- Overview of the topic and current topics/unsolved problems
- Published definitions of rapidity
- acceleration due to gravity
- Faster than light
- Black Hole; Gravity & Speed Within Questions
- Bell's spaceship paradox --- reversed
- Special relativity missunderstood
- "Swimming" in space-time
- SR effects at the center of a planet
- Switching from pressure to energy density on a stress energy tensor
- Can someone explain time dilation w.r.t following experiment?
- What is "gauge" in General Relativity?
- Gravitational Field & Reference Frames
- Is mass creating time?
- Gravity
- Thermodynamics of Spacetime: The Einstein Equation of State?
- Beginner's Minkowski diagram / space-time interval question
- what came first Gravity or Curvature
- confusion is speed of light
- Evidence for infinites at light speed.
- Christoffel Symbols for Schwarzschild Metric (?)
- Div curl black holes
- confusion between simultanety and time dialation
- orthonormal basis in fermi coordinates
- What if light clock experiment was done on top of train?
- No SR time dilation without Lorentz contraction
- Trying to follow i "beginer's" proof/derivation from relativity demistified.
- Curvature of spacetime, Matter vs Energy
- Gravitational Redshift for Photon around Kerr Black Hole
- Is gravity a force, or curvature of space-time?
- From where comes Gravity energy?
- Interpretation of Flamm Paraboloid
- Does the curvature of SpaceTime Disprove gravity?
- Time dilation for clock thrown up and caught back
- what are the meanings of coordinates ?
- Twin paradox in Big Crunch
- Please show me my error
- Question on Light speed
- Acceleration & Mass relationship
- Magnetism and Relativity
- Question about black holes
- Time Dilation From Velocity
- Help me understand SR
- F.O.R. and Acceleration/Deceleration Question
- Rotating Charged Black-Hole?
- Very Long Distance Phone Call
- simple time theory questions
- Thought Experiment
- Constant acceleration rocket
- Eintein's theory of relativity
- length contraction in a current carrying wire?
- Relativistic mass,momentum and energy.
- gravitational collapse to form a black hole
- Gravity/Curved Spacetimes effect on Time
- Further from Earth...
- Can light speed be exceeded?
- Simultaneity in Relativity
- What happens when you enter a black hole
- Can I really not tell if I am in motion?
- c plus and ACAUSALITY in accelerating systems
- Is this explanation of E=mc^2 correct or incorrect and why?
- Why should the action be Lorentz invariant?
- Time 101
- Time dilation
- When adding up velocities, is it possible to produce 1+1=1?
- Apparent speed > c?
- Equivalence Principal, Acceleration, Curved Space
- Black Body in Motion
- Weak Equivalence Principle (WEP)
- time dilation
- Light and time travel
- Relative Acceleration Across a Potential Difference
- Is Action&Reaction Strictly Synchronous
- Acceleration in Born rigidity
- Special relativity fundamental question
- Is c invariant in Accelerating frames?
- Relative object speed question
- spacetime in a sphere
- Can SR and GR be combined.
- A question on photons
- Still learning about special relativity, need help.
- Confused by an example in Brian Greene's book and SR in general
- Relativistic effects on apparent angular size
- Velocity or Gravity creates mass?
- Extended coulomb´s law
- maxima question
- What do real physicists use
- General Relativity for Dummies
- Clock hands
- Einstein’s return to ether, what future of relativity?
- Some Burning Questions about Time Dilation
- Confused about Velocity Based Time Dilation
- michelson morley
- Simultaneity of events in 2 dimensions
- Is light speed faster coming from a smaller star?
- contravariant derivative
- Speed of gravity
- Can GR be formulated as background dependent?
- About how light clocks would work
- Lorentz factor semplification
- Spinning stick
- Is everything "else" blackhole?
- 5-Point Curvature Detector?
- Infinite mass = infinite gravity !?
- Schwarzschild Geometry
- Where does Carroll get eq. 4.64
- Travelling In A Straight Line In Space
- Itchy and Scratchy on a Train
- Time span or time flow
- help understanding special relativity concepts please.
- old question?
- The equivalence principle
- (absence of) temporal aberration: the most precise data?
- Help understanding e=mc^2
- Speed of Space-Time
- Is it realy true that nothing can travel faster than light? if so, why?
- How fast are we really moving?
- Are Lorentz transforms unique?
- Pauli's review article
- Dual of the inertial observer
- wigner rotation
- Geodesic and inertial frame
- SR question
- Question on Space time geometry
- better understanding of causality
- Is a falling elevator a valid inertial frame????
- Creating black holes through relative motion
- Structure of Minkowski Space
- mass in SR
- General Relativity and Minkowski space question
- Accelerating twin.
- Fermi normal coordinates
- Thought experiment: Orbiting bodies close to C
- shortening of spaceships
- General gravity wave question
- Another 'photon's reference frame' thread
- The Fourier-Minkowski transform?
- Absolute or relative TIME
- Why is the speed of light constant and independent from the observer?
- Space Time "Fabric" limit?
- A new interpretation of ether
- The vacuum Einstein equations and flat spacetime
- Conservation law at high speeds
- A thought experiment doubt on General Relativity.
- space-time fluid
- stress tensor
- The scaling of metric coefficients by changing units
- Speed of light dilated
- Speed of Gravity? Questions about the Kopeikin Experiment of Sept 8 2002
- STR 'rotation'.
- "You can't exceed the speed of light"
- Lorentz or Poincare invariant?
- covariant Green's function for wave equation
- Information content of the metric, Riemannian and Ricci tensors
- time travel when velocity> light speed
- Does the mass of a spring decreases if we compress it because we have stored energy?
- A thought Experiment on velocity greater than C
- Tension
- Inverse Square Law + Special Relativity
- GR correspondence to reality
- Planck units and relativity
- Having velocity of light is like having infinite Velocity!!!
- LHC particle mass increase
- Elegant Universe Example
- Suppose relative v in S <> -v in S'
- Velocity translating into weight?
- Decelerating from light speed
- How exactly to calculate the age difference in "Twin paradox"
- Proper acceleration question
- Just when I started to get things straught in my head.
- One-way speed of light
- Question on General Relativity
- How to judge the symmetry of spacetime?
- Black hole Questions
- Introduction to SR
- calculation involving angular momentum
- Observers at light speed
- Time dilation formula?
- black hole - contradiction to the Pauli exclusion principle?
- the change spatial distance between 2 events
- Challenge: superluminal average speed
- Time dilation in uniform field?
- Objects at the Speed of Light question
- So clocks in motion are 'slower' to observers in rest, shouldn't the clocks tick less
- Modified Car and ditch paradox!!!
- why lower index on components?
- Is there any difference left between time and space left?
- Negative time Minkowski metric
- What is happening when travelling towards light?
- Gravitational acceleration of relativistic objects.
- What does the travelling twin actually see?
- red shift and the train thought experiment
- Complex General Relativity
- the Greisen-Zatsepin-Kuzmin limit.
- lorentz transformations and the expansion of space
- Looking for a specific unusual solution to Einstein's field equations
- Are closed time like curves an inherent feature of rotating universe models?
- Einstein's use of ponderomotive force
- Gravitomagnetic waves?
- A Thought About LIGO
- I finally figured out how to ask my question
- Constant speed of light
- Minkowski vs deSitter: hyperbolic vs spherical?
- Are all time machines flawed?
- Is Distance/space Lorentz contracted?
- Pinhole Train
- Absolute Energy
- Why AND HOW could Time Slow DOWN?
- Invariant functions of the four-momenta
- Space-time diagrams
- Redshifting help?
- Beginner's Light Clock question
- Spatial curvature - effect on objects
- Who is in motion?
- Two Black Hole Questions
- Minkowski in 5-D: what is the fifth?
- Relativity on an Atomic Scale
- Length contraction falling down a hole.
- running away from a beam of light
- Relativistic paradox involving torsion.
- Can someone help a novice unbeliever?
- Deriving f(R) field equations
- Light Clock in a Gravity well ????
- Equivalence between a Black Hole and travelling at the speed of light
- Pair of moving charges -- confused
- Expansion of Space
- GR weak field approx. problem with Dunsby's notes
- a question about relativity
- Hawking radiation by the eyes of the falling observer.
- Length Contractions
- General relativity done another way?
- Thinking bout the Special Theory of Relativity
- Why is light travelling in "straight" line? (see restrictions)
- Constance of speed of light and refraction index question
- Transforming the electric field
- Universal cover of AdS
- Speeding black hole?
- Gravitational Force between Moving Bodies
- Speed of light and time
- example and question
- Fractal dimension of CMBR? Cluster distribution?
- Independent Components in Riemann-Christoffel Tensor
- Simple Question-I hope-difference between SP and GP
- speed of light question
- Time machine
- Physical meaning of tensor fields
- Collisions of particles
- Time Dilation-Frames-Details and hypotheticals
- How can light be a constant?
- What happens with a 'Light in a box theory'
- Why light speed is constant? (please read)
- Acceleration and velocity: newtonian versus relativistic interpretation.
- Is Ehrenfest paradox possible
- General Lorenz transformation is not group
- Confused
- Does Schwarzschild Solution work inside a massive body?
- Spacetime - formal description of No Rip/Tear
- Minkowski metric tensor computation
- Time Dilation Problem
- Particle bunching +Lorentz contraction
- SR and GR in a medium, gravitational waves
- Collapse of charged/rotating black hole
- Spacetime, curvature, orbit, matter and reactions
- The arrow of time
- why is energy the "time" counterpart of momentum
- is poincare group simply connected?
- Force & S.relativity
- what is galileian system of coordinate?
- Light Cone
- Is variation pricip for light-geodetic correct?
- How can black holes actually ever exist?
- Time and Space Continuums
- Time dilation
- Lorentz Transformation in New Coordinates
- The twins-some values.
- Time measuring in relativity
- Free Fall Acceleration to c
- Is there something behind a horizon?
- Sum of the angles in 4D coordinates system
- Confusion about relativity
- Michelson Morley revisited
- History of theories of motion; the role of inertia
- How is singularity formed inside a black hole?
- Does forces travel faster than speed of light?
- What is the metric in DSR ??
- Time travel and space travel
- Travel in space to Alpha Centuri
- Maxima software for use in GR
- Inverse Funcation of Relativistic mass
- Question about the limit of velocity as a moving mass is converted to kinetic energy
- Electromagnetic field in a medium
- Help me to Understand: I am traveling at 90% of the speed of light.
- about LTB metric
- Curved space?
- Curved Space
- Equation with Riemann curvature tensor
- time dilation b/c of Gravitaional field strength
- derivation help
- Combining Time Dilation from velocity and gravity
- Travel to Parallel Universes
- Graviton
- How we compute killing vector for two-sphere
- Black Holes Relation To "Time"
- parallel parallels
- Topology in GR
- One-forms and vectors
- General & Special Relativity, Everyday Examples
- Trying to generally understand Relativity.
- Strong Equivalence Principle
- Mass/energy as a "condition of spacetime"
- brane world
- Mass and the interval metric
- Question about how the speed of light is constant
- Relativistic particle scattering
- How to accelerate time?
- uniformity of universe expansion
- Gravitational mass vs inertial mass
- Time in a black hole and Weyl curvature
- tunneling does not carry information > c?
- Extreme relativity question
- Constraints on speed of light?
- Constant Velocity Motion In Train Car
- Dual basis in Minkowski space
- Final Clarification
- Why does a photon have zero rest mass?
- Creating Repulsive and Attractive Gravity
- Is it technically correct to say matter is made of energy
- Time Dilation and Future Interstellar Travel
- Scaling Paradox.
- Problem with four vectors
- New Image from Chandra X Ray Observatory
- Aging during space travel
- What are the weaknesses of Einstein's GR ?
- Gravitational potential energy in GR
- Does Einstein implicitly proves himself and the Lorentz Transformation wrong?
- spaceships at right angles
- Gravitational effects on photons
- Definition of energy in general relativity
- waves in a vacum
- Time dilation at an unchanging velocity
- Relativity of rotating system(s)
- No (Lorentz) Invariant tensor of rank 3?
- vacuum energy destruction of wormhole
- Schwarzschild solution and velocity of stationary observer
- Geometrodynamics
- Gravitational Waves Papers
- Paradox on Special Relativity
- Question about relativity example
- Is there any Limit to the kinetic energy
- Speed of light at an angle
- Is time really a dimension?
- question on time dialation
- A possible "uncrossable" boarder between bradyons and hypothetical tachyons...
- Curved/Warped space
- How is Constant speed of light referenced
- Evidence that space and time has equal footing?
- Euclidean Geometry
- space expansion
- Close space after big bang
- Symmetry Argument
- Equivalence (?) inside a rocket
- relativistci poisson brackets
- Simple question from a newbie
- Photon's frame of refernce
- Is Relativistic Mass Plausible?
- i think i figured out gravity, really
- Numerical Relativity: Components of the Lapse Function?
- Parallel transport and geodesics
- A thought experiment to aid my undertsanding
- beginner's question on GM
- Less elapsed time: Lorentz Transformation or Spacetime Interval ?
- Einstein energy
- Curved spacetime: embedded or not?
- Can someone explain Gravitational Time dilation?
- View from a spaceship at relativistic speeds
- Is Angular Velocity, Momentum, and Energy Frame Invariant
- Spacetime manifold: initial condition or result of GR?
- Schwarzchild spacetime singularity
- Why do really fast speeds keep you from aging or "feeling time"?
- Curved spacetime and imaginary coordinate
- Minkowski norm
- Cancer developing in different RF's
- Retrieving Information from Black Holes (Please repond)
- Effective potential and geodesics in G.R.
- Proof set of one-forms is a vector space
- Geons the missing mass?
- Electromagnetic blackhole violates 2nd law of thermodynamics?
- Gaussian to MKS Four-vector Conversion
- Projection operator
- Geosynchronous Orbits
- Does coupling to stress-energy imply coupling to Ricci?
- Ask about the 1919 experiment
- light ray paths near schwarzschild blackhole
- Dilation & Contraction--First Post
- Wormholes -- too fleeting to be detected?
- Stress-energy tensor
- rotating disks and time dilation
- Help with energy-mass equivalence!
- Black Hole Time Machine (time dilation)
- Has Gravity Probe B proved framed dragging
- Relative simultaneity...
- Really moving. What does Bridgman mean.
- Can someone explain this time dilation problem to me?
- Some tensor theorems
- Blueshift question
- grtensor 5d???
- Space-time fabric
- Causality... who needs it?
- Relativity of Time Dilation
- Constancy of light speed implied in time and clocks !
- So gravity and accel can be transformed into eachother, but what about...
- Length Contractions
- Gravitational time dilation question
- the speed of gravitational field propagation
- Invariant Tensors in GR and SR
- Light in the box gravity - question.
- Time Dilation Paradox (variant distance between two accelerating bodies)
- In simplest terms, what is null dust?
- Conservation of Mass
- Misner-Thorne-Wheeler, p.92, Box 4.1, typo?
- Black holes and singularities
- A deviation from General Relativity on cosmic scales...
- photon gravity
- Simulating electron beam - what equations to use?
- Inverse square law
- basic question about relativity
- We can't determine who is moving?
- Lorentz Transformation
- Does Hubble's law implies accelerated expansion?
- Has anybody read this book on relativity?
- How the universe looks like at the speed of light
- Spinning "tornado" wheel - circumference and radius
- Kruskal and Penrose diagrams for a Minkosky spacetime
- Inside a black hole : looking for an animation
- Schwarzschild & Kerr black holes geometries
- About BH singularities
- grtensor
- Derivation of E=mc2
- Temperature during black hole collapse
- Derivation of momentum & energy formulas
- Relatvity of Vectors
- Three questions related to the principle of general covariance in GR
- Why is not scalar field?
- Chapter: The mechanisms behind Non-Simultaneity
- A few questions about the Lorentz factor
- Meaning of Lorentz Transformations purely mathematically ?
- Value of c and strange things that don't happen when at c
- How are watches syncronized
- Velocity addition
- Say gravity were larger, matter "burns" faster?
- Radius of Universe, electrons, and strings.
- Mmi
- linearized gravity
- empty space time
- Lightcones around Kerr ring
- Special relativity argument
- Gaussian Co-ordinates-background and derivation
- Special Relativity Questions
- Relativity and sound?
- Speed of light in gravity
- Light Cones / QM
- A Few General Questions About Special Reletivity
- Time Dilation and/or Kinetic energy the same/different?
- Reciprocal Lorentz Contraction Mismatch
- Is this an Ill-posed Question?
- Is black hole elementary particle?
- Speed of light vertical and horizontal in gravity
- Does space and time act differently at different scales?
- Doing General Relativity with Cartesian coordinates?
- Acceleration in an inertial worldline?
- Four-vector from 3 space components?
- Explanation of Wiki regarding Geodesics as Hamiltonian Flows:
- Wormhole Time Machine: As Time Goes On
- Reason for positive energy
- Is this idea of time travel consistent with relativity?
- 45 dergree mirrors in Special Relativity
- Slowly add mass to a neutron star till it collapses.
- The “Grand Father” paradox is flawed.
- [Special relativity - Mathematical background] Tensor and pseudo-tensor
- Mass expansion
- Expanding universe and light detection
- Bivectors, Cartan Geometry and Curvature
- Shrinking circles
- Energy Density of the gravitational field
- Anti-matter black-hole, matter black hole, different?
- What is Cosmological Costant?
- Relativistic Acceleration Contradiction
- Trying to understand the "Why" or Relativity.
- Has einsteins experient with time been proven, why hasn't it been applied or used
- Principle of Least Action - Straight Worldline on a Geodesic
- Ricci Tensor in Empty Space
- Relativity and Uncertainty
- Question about equivalence principle
- Spacetime and Newton's bucket
- The Greatest Time Traveler
- Gravitational redshift and time dilation
- Faster than the speed-of-light
- confusion about a laser shining perpendicular to a moving inertial frame
- why is invariant interval invariant?
- General Question about Gravitational Potential & General Relativity
- Does c-invariance in SR postulate need inertial frames ?
- Time
- Law of reflection in SR
- how is mass density affected by speeds near c?
- How is the -(ct)^2 term in Minkowski metric conceived?
- Slow clocks on moving body is an illusion?
- Continuous application of Lense-Thirring precession: flyby anomalies
- Tensor Integration
- Einsteins gravity theory (bending space) question
- Diving into a Black Hole
- Matrix Formalism of GR
- theory of relativity second postulate
- Lorentz contraction
- Need help understanding the twins
- local detectability of frame-dragging
- Gravitational redshift and time dilation
- Relative Energy Generator
- GPS and time dilation
- Exactly how is causality violated by superluminal travel?
- Q. about Bradley's Stellar Aberration
- Configuration comparison.
- Relativity confusion
- question tensors
- Equivalence principle to other forces?
- Power Required to Accelerate Space Craft to Near Light Speed
- Relative motion and time dilation
- Space contraction and stress.
- electric resonance in a moving frame
- old question
- Special Relativity.
- Merging Black Holes & the Nature of Time
- Time Dilation equation questions
- GR in Matrix format
- How do black holes gain mass?
- question
- Moving observer can see what?
- Energy conservation in relativity
- Energy density of grav. field - analagous to EM
- Charged particle in free fall
- riding on a photon
- Does spacetime could curved in a "square way"?
- why Hawking radiation contains other particles besides photon?
- Relative motion, frames
- problem
- How to study Gravitational Redshift of Sound Waves?
- can string theory/gravitons/broken SUSY reproduce GR time dilation?
- Black hole can regard as most efficency mass-energy convecter?
- How to solve space-time variation in the ocean?
- Video camera links in Special Relativity
- Relativistic Collision
- Formulation of Einstein-Hilbert Action
- Very Old Question
- properties of einstein tensor....
- Trying to understand rotating black holes
- Einstein's box in media and mass-energy equivalence
- Einstein's box of phonons and energy-mass equivalence
- Contradiction between Quantum Mechanics and Special Relativity?
- Covariant divergence question from Landau and Lifshitz
- What's the formula of Doppler effect in media?
- S,S' in the Lorentz transform.
- schwarzschild affine connection
- twins
- Lorentz Contraction
- speed of light in the medium
- Active diffeomorphism
- All rotating black holes will eventually stop?
- Issues with EF coords.
- Is it possible? (faster than light in a medium)
- Why FTL travel of light spot can't carry any information?
- simple argument for area conservation under Lorentz transformation?
- Time and the relative speed of an Expanding Universe
- Modification of Law of Reflection from a (moving) mirror in Special Relativity
- Time dilation can't possibly be explained this easily
- Falling into a charged black hole
- Is Faster than Light travel impossible?
- massless particles ?
- the aether
- Relativity Questions on Motion Limits
- Rotation and Minkowski diagrams.
- The relativistic Lagrangian
- rotating minkowski metric
- I am having troubles with the gravitational time dialtion equation.
- Rotation and Minkowski diagrams.
- Doesn't relativity define time as an illusion?
- Light sphere question
- Curvature perturbation
- Issues with advanced Eddington-Finkelstein coordinates
- The "False Twin Paradox"
- Can you scoop out part of a black hole?
- Light speed spaceship time travel conundrum
- experimental sticky (Hafele-Keating experiment)
- embedding LaTex
- Evotos Experiment
- mass at equator versus mass at pole
- physical meanings of universal coordinates in schwarzschild metric
- Relativity through different scales
- Gravitational vs geodesic proper time
- Pendulum Clock
- Increase in spin rate as object collases to black hole
- Equivalency Principle
- Help me understand Cosmological constant?
- Relativistic Rotation
- Mass
- Gravities range
- How little does a hydrogen atom curve space?
- special relativity. I need help
- Thought experiment about Simultaneity
- Time paradox?
- Sun Vanishes - How Long Till Orbits Change?
- There is a mistake in relativity.
- Einstein and idea that nothing can travel faster than the speed of light
- Isn't working with the relativistic Lagrangian AWFUL?
- Einstein's field equations
- Writing the EFE in a different form
- General Relativity look at backwards.
- Dificulty with Einstein's derivation of TAO
- Differences in Newtonian and Relativistic predictions of gravity
- light, dielectric medium, c, wavelength
- Absolute zero and hot in respect to time dilation
- speed of light vs time
- Crossing the Event Horizon of a Black Hole
- Accelerations in Kerr Metric
- How would you calculate how bodies curve space/time?
- GR in a universe without matter or energy
- Would like to learn more about the Penrose process
- Where did Einstein say :mass curve space/time ?
- Special Relativistic Gravity
- Looking for an equation?
- Would we as humans ever be able to travel close to the speed of light?
- Lorentz contraction of a light pulse
- 2 black holes, 2*M --> 1 b.h., 2*M - f*2*M?
- Uniform background dust of plank mass black holes.
- The Principles of Relativity - Help Kindly Requested
- Tensor confusion
- units time?
- Relativistic gravity incomplete? Big Bang singularity
- Time dilation and space travel
- Wormhole time-travel question
- Thoughts about Causality and Paradoxes
- where s the moving train on the embankment?
- Seriously, why can't I go faster than the speed of light?
- Have you read "Why does E=MC2"?
- Light and time
- Hilbert's Derivation of Field Equations?
- Quick question about gravity/time dilation...
- Singularities in colliding black holes
- how to pronounce 'Christoffel'
- Embedding Diagrams
- Why does a travelling twin age slower but not get shorter?
- Einstein equation point mass solution
- acceleration and time... question
- Relativistic velocity limitations
- Shoot Light
- Gravitons
- Gravitational force vs. relativity
- Question about light speed (is velocity cumulative?)
- Twin Paradox Query
- Space as a linen sheet.
- Extrema of proper time
- Multibody system in general relativity
- Revisiting Newton's bucket
- Light and Relativity
- "Using light to see the world requires speed of light to be maximum?"
- is the Doppler effect for atomic spectra a purely realistic effect?
- Questions About Absolute/Relative Velocity and Time
- Relativistic scattering Lab and CM frames
- Weak and strong equivalence- what is the difference really?
- The Relativistic Boat
- the photon gas in the curved space
- Rotating Black Hole?
- Dust filled universe but dust is a real field.
- Real Lorentz–FitzGerald contraction
- If the sun suddenly dissapeared.
- Time Dilation
- Special Relativity and Distance/Space
- Understanding the Lemaitre metric
- distance in GR
- Pioneer anomaly not gravitational
- A simple SR question, but confusing to me...
- Steel bar bisected by event horizon
- A bunch of LHC relativity questions
- Einstein Vacuum Equation, Vacuum Constraint Equations
- Is your velocity constant in space-time?
- Acceleration, and Observers
- Question about momentum
- On the Ether "Swimmer Analogy"
- How can we say there is Zero G force in space what about SUN's G ?
- What is the minimum mass required to distort space and time ?
- Is the range of EM forc affected by Black Hole Gravity
- Time sped up in G-field
- Half the twin paradox!
- The doppler effect and time dilation context
- Faster than Light
- Dust filled universe, is there a type of tension defined?
- Part of a bigger universe.
- Lorentz Contraction: What really Contracts?
- 1905 paper "Does the Inertia of a Body Depend Upon its Energy-Content?
- The Physical Meaning of the Relatvity of Simultaneity
- Physical meaning of index gymnastics
- Time dilation - correct term?
- gravitational waves and gravitation
- What is accretion disk of BH?
- Alcubierre Warp Drive
- hawking and ellis help
- Properties of Mass in Curved Space-Time
- Why the c in mc^2?
- Do particles without a rest mass bend spacetime?
- Mobile communication with electromagnetic waves and theory of relativity
- Telling if a reference frame is moving or at rest
- Superluminous Objects and Black Holes
- Can Black Holes Exist?
- Why does Einstein say that a clock slows when it is moving?
- speed of light vs speed of time
- Alcubierre drive has trouble with quantum effects
- Planck scale dimensions...
- Question about Einstein's Original E=mc^2 derivation
- Galileo and Lorentz transformation
- Another paradox from the force transformation laws?
- relativity and time (twin paradox)
- Bigbang Bigcrunch "Singular" event?
- Clocks running slower is an illusion
- How to Determine Velocity in Special Relativity
- History and Timewarp
- Stress-energy tensor
- How does curved space create gravity?
- Extended thought experiment
- Frame of references in time dilation
- Changes in planet orbits as a star (eg. the Sun) decreases is mass.
- Calculating Time dilation in Accelerated systems
- So what exactly E=mc^2 says ??
- Gravitational field of photons
- The not paradox twins
- bending of light and the travel distance
- Light-cone coordinates
- What is - Conical Singularity
- how do we know nothing can go faster than c and why?
- Black Holes are Singularities..... or vice versa?
- The Physical Meaning of gravitational time dilation
- Cool thought experiment.
- Light Traveling in Opposite Directions
- The Meaning of Living in 3 Dimensions?
- Where is Light?
- about four-momentum
- Energy in different references
- Can molecules exist in other dimensions?
- What is time?
- Time Dilation/Gravitational Theories Needed for Short Film
- Space Time Curvature Question.
- Stationary below the event horizon?
- Gravity dilemma (explained)
- Light cone = black hole?
- Can spacetime be created ??? if yes how if not why ???
- Elaborating on stress-energy tensor
- Lorentz Transformations
- The time machine idea !!!!
- Relativity of Simultaneity - Question about the Classic Train Example
- Why must we travel through something at C?
- Lorentz Contraction Circular Motion
- Cascading reference frames
- Equation of motion in a scalar field
- Electron repulsion
- Gauge fixing in GR
- Event horizon of elementary particles
- Invariance of speed of light
- Relativity of Simultaneity
- Traveling at c-(1 planck length/planck time), then accelerate. What happens?
- Mach's principle
- positive gravity effect
- Is/are there any invariant OBJECTS in relativistic? Is there a substratum?
- Killing vectors in Robertson-Walker mertric
- Can light be redshifted by gravitational fields?
- minimum speed in relativity
- Terminology; "distinguished"
- Which photon hits?
- Theory of Relativity
- Derivation of Kerr Metric
- Frame-Jumping & Incorrect Gamma Derivations Aplenty...
- general relativity
- Equilibrium in Multiple Inertial Frames
- Thomas Rotation
- Lorentz Transformation (simplified)
- 4-velocity "length" under a force
- Galaxies travelling faster than the speed of light??
- Basis vectors under a Lorentz transformation
- speed ?
- special theory theory oe relativity
- Gravity is an entropic force??
- Einstein-scalar field action --> Einstein-scalar field equations
- How to derive non relativistic Euler equations from the perfect fluid stress tensor
- Is special relativity sufficient to treat the twin paradox?
- Question regarding de Broglie wavelength.
- Is GPS the only practical application of General Relativity?
- Expanding Space vs Energy
- Curving space at speed of light?
- Speed of Light
- difference between relatavistic kinetic energy and normal kinetic energy
- time
- Time travel
- Killing Vector Equations
- To radiate or not to radiate
- Does time "stopping" at c explain spooky action at a distance?
- Equivalence Principle
- "No Hair" theorem?
- Relation between total energy and rest mass
- Self-torque of a compressed rod?
- Killing vectors in space with torsion?
- Variational principle for deriving dynamics of different fields in GR! - Bibliography
- Relativity of spring "constant"
- Question about tensor derivative
- What is the physical explanation for boosts not commuting?
- hand-wavy proof of (part of) Birkhoff's theorem
- on bohr- sommerfeld theory
- Why vacuum Einstein equations are hyperbolic equations?
- liquid spacetime
- Hartle Gravity - Simple basis vector question
- Light Passing through a Moving Medium
- Is the Universe Galilean?
- Understanding the Photon.
- how many numbers to describe a point in space in GR?
- Death by Lorentz Contraction
- Does a charged particle in free fall radiate?
- How to Calculate Proper Time
- Length contraction and interstellar travel
- gravity and time
- dark energy and mass-energy conservation
- Time
- What is intrinsic derivative?
- nature of space-time
- minkowski question
- Problem solitions
- what is the speed of gravity
- Length Contraction Documentary
- So(25)
- proving x^2-c^2*t^2 invariance
- Light, mass and gravity
- Clock postulate and differential aging
- Infinitely (Relatively) Smaller Black Holes
- Violation of Newton 2?
- Nature of the time dimension in 4D space-time
- Understanding the 3 coordinate systems for a Schwarzschild geometry
- Can a "near-by" black hole affect the shape of another black hole.
- Superluminal travel.
- The idea of the conformal method?
- Redshift/Blueshift of Gravity Waves Around a Black Hole
- i don't understand the light deflection calculus
- relativity and collapsing stars
- Frame dragging and absolute rotation
- about four-acceleration
- momentum in time
- Commutativity of Tensor Field Multiplication
- Does Hawking deserve a Nobel prize for his singularity theorem?
- Reference Frame of a Photon
- Gravitaional field can store mass?
- A.G. Kelly and his criticism of relativity
- Thought Experiment
- "frame-jumping"
- Thomas precession
- An other train paradox.
- Simultaneity Train Example
- Hafele and Keating Experiment
- Are space-time curvature 3D
- Mach and the Twin Paradox
- Einstein Tensor...
- Velocity vs. Time
- A way to calculate the practical range of gravity
- Gravitational attraction related to temperature
- Absolute Rest & Black Holes
- Verlinde gravity
- Twin Paradox - Acceleration vs Velocity
- relativity theory in 2d
- Relativity of potetial energy
- Gravity from spacetime curvature
- Putting numbers in Einstein's thought problem
- Inertial Frames
- Weight, Acceleration, Gravitational Equivalence
- The potential problem
- Inertial frames in SR and GR
- Inertial Frame
- time slows down for who?
- Basic matrix representation question
- Oh my God is the Catholic Church right?
- Gravity, Inertia and Contraction
- Why isn't the Cotton tensor identical zero?
- 3-d model for space and black holes
- Gravity as an emergent phenomenon
- Distance of a lightyear?
- It doesn't make sense
- Maxell's Equations
- The gravitational Klein-Gordon Equation
- acceleration does not effect clocks?
- question about traveling in the future
- particles (not??) following geodesics in GR
- The Bianchi identity as a new incarnation of the momentum-conservation law
- status of TeVeS
- special relativity
- Gravity ~ Acceleration ~ Centrifuge & GR
- Locally flat - what does it mean?
- twin paradox - which twin is older?
- will time stop if we were able to go as fast as the speed of light?
- Simple wedge product issue
- Position Matters?
- Can Chromatic Aberration arise from Gravitational Lensing?
- Energy-momentum equation
- E Field and Field Transformations
- time dilation & light speed
- Is SR-allowable time travel "future-only"?
- When you are no longer traveling at the speed of light, why don't you feel older?
- Light speed measured from distance
- Twin paradox in a closed universe
- SR time dilation real or perceived
- Progression of time when velocity is very high
- Energy Mass equivilance
- Force Law Transforms
- Infinite gravity and curvature
- SR derived solely from one postulate
- Gravity, work, geodesics
- metric light distance and gravitation
- Gravitational force of one nucleon
- Newton's universal law of gravitation...
- "Cranks" vs Einstein
- Tidal forces inside BH in horizontal direction
- about invariant hyperbolae
- help with geometric interpretation of 1-form
- Does measuring the age of the universe result in objective observation?
- Slowing of Time
- Monkey Hunter demonstration in GR
- Question concerning wave 4-vector
- Travelling faster than the speed of light?
- GR derived using spinning ride example?
- The 4-D Laplace equation and wave equation
- Mass to light ??
- Time and Space
- Can you increase the speed of light?
- inconsistent forms of the metric in a uniform field
- light vs. time
- Counter intuitivity and relativity
- Transformation of Force
- geometry of minkowski spacetime...
- Metric of a surface
- Hyperbolic motions
- Einstein metric and Space-time metric
- Dispute over basic relativity question
- How do we get E=mc2?
- G at small distances
- general relativity
- Transformation of k_y in the wave 4-vector
- tests for radiative character of spacetimes?
- Squaring the energy
- Time dilation = something is wrong...
- Differential Forms Integration Exercise
- Einsteins light beam....Lets go for a ride...again
- Metric tensor
- Dot product of 4-force and 4-velocity
- A question about general relativity
- Unsophisticated, theoritical implications of time dilation between 2 worlds
- Energy conservation in a closed universe
- The Vielbein postulate
- Non-contracting closed space GR?
- Shady Crypt Observatory E=mc^2 derivation
- Isotropic inhomogeneous metric
- A problem in GR
- Time and Motion
- Is curvature guaranteed if only one connection coefficient is 'large'
- Time Dilation -light vs. spaceship
- Real physical effects of Relative Motion
- Particles faster than light
- Relativity and Magnetism
- LHC, Mass, Higgs, Relativity
- basics
- Determining 4-vector character of a 4-tuple
- Schutz - A First Course in GR - Simple Summation Question
- Why no faster than c?!!
- k=-1 closed space
- A spinning universe...
- First reactions to Einstein's theories? (support or refute)
- Thermal equilibrium in GR
- spinning disk approaching c, what will happen?
- Geo600 search for gravity waves
- Null curves vs. straight curves on Minkowski space
- One Way Twin Paradox
- Energy and mass in relativity
- Stretched & Compressed Clocks
- definition of a rotating frame in GR?
- Einstein Velocity addition
- theoretical physics videos
- preferred frame
- rest mass
- Relativistic Doppler effect and relativity principle
- Twin paradox without length contraction
- Conformal compactification
- Does an electron moving along a geodesic radiate?
- Strange geodesic in Schwartzschild metric
- light speed, time dilation question
- Does Time Exist at the Speed of Light???
- What is a physical property?
- Clarification Needed
- Help with the basics of Maxwell and Lorentz equations
- String theory vs. Relativity
- Is the equivalence principle good for anything?
- proper time
- The Gravity of Photons
- Some questions regarding gravity
- Torque relative to an inertial frame
- Experimental tests of General relativity vs Cartan extension
- Special Relativity / Cosmology
- Rest frames
- Ontological concepts(?)/ Special relativity.
- Equivalence of mass and energy
- "Visualizing" Ricci curvature
- diameter?
- Time Travel Question (from "A Briefer History of Time")
- What's up with spinning superconductors?
- Finite energy super-luminal propagations
- The relation with time and light
- General Relativity, is gravity a force?
- Light clock moving to demonstrate time dilation
- estimating/counting photons in two frames
- Syl & Der
- Blackhole can be relative?
- An elastic collision
- acceleration of light?
- Deriving t=T/√(1-v²/c²)
- Gravitational lensing and red shift
- Twin Paradox aging question
- Relative velocity=relative momentum?
- Looking for a stress analogue in E&M
- future and past
- question
- Black Hole "particles" - acting as bosons?
- Move one, How long does it take for another one to move?
- Explanation of General and Special Relativity
- velocitiy turns things into black holes?
- Sagnac Effect and Special Relativity
- Attaining speed of light
- Mass Variation
- Geodesics
- General relativity and Higher dimensions
- speed of an electromagnetic wave and gravity
- Confirming what I have read.
- Mass Energy Equivalence and Kinetic Energy
- Time it will take when traveling at speed of light
- Any link between Plebanski and McDowell-Mansouri formulations of GR?
- Relativity, Gravity, "Attraction", Curved Space
- Gravity on the Minkowski spacetime
- Speed in general relativity
- Newton, Einstein, multiply connected spacetime, Energy and so forth...
- Object from the sun at half light speed
- matter into energy at high velocity
- Gravity and moving Electric Charges
- Free falling reference body
- Question about my reading
- What happens biologically during time dilation?
- I Still Don't Get General Relativity
- Symmetry group in GR
- conformal killing vector
- Formula for Density
- What are the effects of Spacetime "Drag"?
- Red shift Blue shift
- about hawking radiation
- about tidal forces
- Gravity and Instantaneous Information sharing
- Yet another doppler question (regarding conservation, time, and irradiance)
- Adding Relative Velocities
- Is EM theory in curved spacetime the same as "unification"?
- Relativity of simultaneity
- What are the shortcomings of Misner, Thorne, Wheeler?
- Einstein's Train
- Calculating gravitational time dilation
- Change in a singularity!
- Action for the relativistic point particle
- relativity
- Derivation of Lorentz transformations
- Which Equation is right?
- How do we determine one clock is better?
- Minkowski 4-space? Yes or No.
- very close binary, strongest steady source of gravitational waves
- Getting close to Speed of light...
- Anisotropic World
- e=mc2 question.
- interior metric solution...
- about the Rindler metric and the Weyl tensor
- 5 Light-Year long stick question..
- Concept on Gravity
- 300 Years of Gravitation, Updates?
- Spacetime...3+1?
- E = mc^2
- "If a photon had a mass, time travels would be possible"
- weight
- Energy-Momentum Tensor
- relativity paradox in exponentially accelerating train
- Shape of spacetime
- What happens if we cut this rope off?
- Is periodicity relativistic?
- Lagrangian/Hamiltonian for classical point particles in SR
- einstein's hypotenuse
- Einstein Field Equation Solution - How?
- List of Christoffel Symbols
- Relationship btwn Killing Vectors and Geodesics
- Does velocity affect Gravity.
- Speed of light constant?
- 1PN metric vs. Schwarzchild
- Why does the speed of light have a maximum speed?
- relativity
- Confused about derivatives of the metric
- Relativistic asteroid collision...
- holaaaaaaaaa
- variety of black hole shapes
- Solving the Equation of Geodesic Deviation
- Spacetime
- Einstein holding Maxwell's equations above Newton's equations
- Einstein again +, on large scale.
- Time scales in Inertial Frames of Reference
- One Forms
- inconsistency in relativity paper
- Schwarzshild black hole
- Faster than light travel proved... sort off
- Bullet vs Photon: speed of light, momentum and reference frames
- Eddington-Finkelstein, Regge-Wheeler, Kruskal-Szerekes coordinates
- Question about the kinematic equation
- Does Mass disappear and become Energy?
- Universal expansion
- Question about Brian green book THE FABRIC OF THE COSMOS
- Maxwell eqs invariant under other transforms
- Applying variational principles to that metric describes a black hole!
- Mass or Charge?
- what is the difference? special&general..
- according to GR, the future already exist?
- Naive question
- Newton's Thought Experiment
- Einstein v Minkowski.
- Close to C orbit around Earth and how time would be affected
- Zwartschild radius of black hole link between matter and energy?
- Connection vs metric
- length contraction, hubble constant, and C
- Why is spacetime curved in GR?
- Hulse-Taylor versus Jupitor-Triton
- Why is the Equivalence Principle True?
- GR effects
- Metrics on a manifold, gravity waves, gauge freedom
- Relative speed of light paradox
- Photon's Mass and Speed of Light [Confused]
- What happens after you travel at a relativistic speed
- Why does mass cause gravity
- Decomposition of the wave-vector in terms of wavelength
- Physical interpretation of breaking causality
- Minkowski's mechanics
- About length contraction
- The Universal Time Coordinate
- numerical GR
- A book on GR
- Christoffel symbols
- Light speed in a non Inertial frame of reference
- question
- question1
- Energy of the gravitational field in GR
- Null geodesic in 2 dimensional manifold
- Timelike geodesic
- Relativistic length expansion in general accelerated system
- C according to what reference frame?
- Molluscs?
- Help....!
- Energy-Momentum Equation of a Particle
- Is the cosmological constant constant?
- What is the connection between General Relativity and gravitons?
- twin paradox thought experiment
- The shape of gravity
- about the mass-energy relation
- Speed of light for different observers
- Photon-observer meaningless?
- Now i'm getting all confused...
- GR equations
- Relativistic lenses
- Electromagnetism, Relativity, Force, Space...?
- Can you rip the space time fabric!?
- Show that the light velocity c is constant under Lorentz transformations.
- Riemann tensor in normal coordinates
- Accelration & special relativity.
- Neutral particle falling into a black hole
- Are photons affected differently by gravity?
- I need your Advice
- Yet another relativistic acceleration question
- Deflection of light (wave aspect)
- Schutz vs. Hartle?
- speed of light or speed of time?
- finding the rest energy
- Hulse-Taylor versus Pluto-Charon
- Hubble's law
- Relativity of simultaneity implies a universe for each reference frame?
- Understanding solutions of GR
- About Tensor Calculus
- Emergent Gravity
- Special Theory of Relativity paper
- Energy density and gravity
- what are tetrads and the spin connection
- lagrangian densitys- variational formulation
- Circular Motion in SR/weak gravitational field limit
- Time dilation due to velocity
- Max Tegmark sings the relativity song.
- Stuffing a black hole full of electrons?
- Spacetime Interval
- Is symetry across inertial frames purely theoretical?
- macroscopic particles?
- Christoffel connection in Kaluza Klein Theory
- An unusual view from Bridgman.
- basic tensor help
- Where does all this spacetime curvature come from?
- geodesic completeness proofs
- General Relativity - gravity self coupling
- The velocity of electron near speed of light?
- Arbitrariness in Special Relativity
- Trouble with Lorentz transformations
- How does the Stress Energy tensor relate to Noether's theorem?
- Length Contraction and the Conservation of Energy
- Mass dilation
- About geodesically incomplete metrics
- Tensor operations, Maxwell's field equations
- Geodesic deviation
- Newton-Cartan
- Is black hole collapse stopped by zero point motion?
- Four-Velocity & Momentum
- Four vectors in complex notation
- Printing mistake in A First Course in General Relativity?
- A clever cosmologist refutes relativity
- A basic question in general relativity
- Raising and lowering indices of partial derivative
- Divergence of product of killing vector and energy momentum tensor vanishes. Why?
- Normalization of 4-velocity in general relativity
- E=mc^2 can C^2 be described as a physical process?
- bending of light
- Trying to understand Special Relativity
- How can time dialation cause gravity?
- Einstein Notation
- Indices
- Divergence theorem in curved space
- OEMB Section 3, confused
- Ever-present vacuum
- How can Space and Time exist?
- Some Thought Experiments (simple ones)
- Covariant derivative, timelike vector field (Kerr- Schild Class)
- Question About The Expansion of The Universe And Time
- Kronicker Delta, Levi-Civita, Christoffel ... and "tensors"
- Spacetime Diagrams
- Why is the measure and "finititude" of c critical?
- Time dilation & symmetrical twin paradox variant
- "E2 - p2c2 = m2c4" - Meaning of symbols
- Gravitational Potential Energy
- relativity question
- Swartzchild Anisotropy
- simultaneity & seeing the same event multiple times.
- Andromeda Galaxy
- relativistic energy of a ball
- The static Killing vectors in Kruskal coordinates
- Superluminal Frame Adjustments?
- Curved space puzzle
- Questions about gravity at relativistic velocities
- I've gone faster than the speed of light, havent you?
- A photon watching us
- another relativistic dynamics question
- What is spacetime made of?
- Singularities
- Could the speed of light be one of the slowest things in the universe?
- Very simple thought experiment re: time dilation
- Experimental "measurement" of Einstein's Field Equations
- Is it possible to see at high speeds?
- D'Inverno - another query
- Divergence of curvature scalars * metric
- Special Relativity Clocks
- Why do massless objects travel at c?
- Thermodynamics of Bosons, esp. Photons?
- Time Dilation on a Merry Go Round
- mass flow and its effect
- Poynting's Theorem in Forms
- Special Theory of Relativity Incorrect?
- Alignment of axis
- Invarients from the Faraday tensor
- Rod shortening - physical reality?
- Riemann tensor and flat spacetime
- What accounts for invariant mass' confinement to less than c motion?
- Photon in time versus photon not so much-ish in time
- Energy variance, and pair production
- confused about time dilain length contraction
- Length contraction (objects & space or objects only)
- Does energy alone contribute to spacetime curvature?
- curvature space time
- On the frame dragging effect
- Help with differential geometry: Hilbert's stress energy tensor
- Appearance of a wormhole?
- Is acceleration relative? (In the same way that velocity is)
- Newtonian limit of Gravitational Klein-Gordon Equation
- speed of light for accelerated frames
- General Relativity Revisited (What if gravity actully is a force?)
- Cartan Formalism
- Deriving the Schwarzschild metric just by using the equivalence principle
- The Eternal Question of Inertia
- Relativistic centripetal force
- Confused by variational principle
- Relativistic energy equations
- Metric outside a spherically symmetric source.
- Force Form of Dark Energy
- Energy-->Mass-->Gravity
- FRW universe with S^3 slices
- what is "relativistic mass" and "rest mass"..
- Observed speed of light [actually about relativistic velocity addition]
- Speed of light in a "vaccuum"
- Would light reach the earth in this scenario?
- Clarifying the relativity theory
- EM Force and GR
- Time coordinate = timelike?
- Mercury's precession
- Understanding Spacetime
- Time Travel Question...
- 'Real' spacetime in GR?
- twin paradox and length contraction
- Vectors in Special Relativity
- GR, gravity and curves
- Energy into matter conversion possible?
- Gravitational time dilation vs velocity time dilation
- I'm new to Relativity. I have a quick question.
- Ernst equation
- Partial derivatives as basis vectors?
- Slowing time
- If I were light...
- cosmological redshift
- Sets of Trajectories Equivalence Requirements
- Spinning Super Fluids
- diffeomorphism invariance of metric determinant
- Relativity of Simultaneity
- Accelerating frames and black holes
- EP test?
- Gravitational redshift equation
- Gravity and Charge
- photons for dummies...
- warped space...
- lorentz boost help
- General Relativity & Newton's Gravity - the fit?
- Gravity and Energy
- Other universes vs Hawking radiation
- E=pc
- Timelike, spacelike, or null?
- Wave equation and Galilean Transformation
- Why hyperbolic geometry in spacetime if it is flat?
- Diagonal Ricci tensors
- Twin paradox
- cosmological expansion question
- length contraction and time dilation equivelant?
- Infinite speed of time
- Train thought experiment (SR)
- Riemann-Christoffel tensor
- Lorentz transformation
- Mass creates Volumetric Space
- Question about proper time
- Length contraction or Lorentz Contraction
- What is this equation?
- What exactly is Einstein's famous E = MC^2
- Extrinsic properties of the curved space
- Is the distance relative also?
- Gravity and acceleration near to the speed of light
- Lorentz transformation as a higher dimensional rotation
- scenario allowing a signal to travel at superluminous speeds?
- What kind of 'rotation' is the Gaililean transformation?
- membrane theory
- Spacetime proven or is the Graviton still alive?
- Spaceship flying towards earth at relativistic speeds?
- Why cant you go faster than the speed of light?
- Lorentz boost and equivalence with 3d hyperbolic rotations
- Does time obey the inverse square law?
- Relative Velocity
- If you were out in space, motionless
- Ticking watch
- scalar curvature
- Relativistic Interception
- Why is speed of light constant?
- easy ways to explain special & general relativity
- Distnace between points and isometric mapping
- Doubt about proof that E=mc²
- why aren't you accelerating when you fall
- Green's function for Klein-Gordno equation in curved spacetime
- Sears, Brehme and momentum
- Special relativity question.
- Do all observers agree on gravitational mass?
- Correction term to Newtons gravitation law
- gravity speed vs light speed experiment
- Block Universe and Relativity
- how long does a ray of light travel for based on ITS time scale
- Relativity vs Quantum Mechanics
- Do gravitational waves have different frequencies?
- What if Einstein was wrong?
- The metric
- Vacuum solutions, and Explicit source terms
- Unsymmetrical metric
- Two dimensional manifold are conformally flat
- Some thoughts on energy and momentum
- Gravitational force and acceleration in General Relativity.
- Straight line through spacetime.
- I don't understand why your clock slows down
- Acceleration inside an event horizon
- Frame of reference of any observer
- SR and differential geometry
- Does the Null speed exist ?
- Variational methods on Lagrangians (D'Inverno Chapter 11)
- timelike and null coordinate
- Are Lorentz and Poincare insufficiently credited for special relativity?
- Need help explaining light speed limit to younger brother
- Restoreing Force?
- Stress-energy tensor diagonalization
- Poincare Gauge Theory
- Energy in Schwarzschild geometry
- instantaneous rest frame
- Gravity does not exist!
- Mass energy equivalence
- Motion and the Warping of Space
- Mass increase at relativistic speeds
- Do not believe this letter on gravitational radiation
- Albert Einstein's Theory of Relativity
- Is time scalar?
- Mach's Principle and the Accelerating Universe
- Generality of theta=pi/2 in Schwarzchild
- Does the Universe spin (does it have an angular momentum)?
- Why is charge/current density 4 vector a twisted differential 3-form?
- Relativistic light aberration and backwards moving horizon
- Faster than speed of light spaceship.
- conservation of momentum
- Curvature (Ricci things)
- Different acceleration in an accelerating rocket?
- Pound–Rebka experiment
- Magnetic fields and clocks ?
- Time dilation in biological processes
- 'Direction' of space-time curvature ?
- Struggling with the relationship between the Lagrangian L and the interval ds?
- torsion and the conservation of angular momentum
- Challenge to the 1st postulate
- Effect of motion on energy
- Compact support of matter fields
- Trying to understand linear frame dragging
- Relativistic Momentum: Please help me to see that it is conserved.
- Derivation of Relativistic Momentum
- Can you be in stable orbit inside a blcak hole?
- Simple question about warping space
- Raychaudhuri equation in Jacobson's paper (gr-qc/9504004) ?
- Gravitational Length Contraction and Dilation?
- travelling at speed of light and looking in the mirror
- Layman in search of help understanding relativity
- A ambiguous variation of Einstein--Hilbert action
- Gravity
- Einstein's Equations
- Help with relativity
- Heat and relativity
- Time dilation by homogeneous distribution of massive objects?
- Doppler sun tan
- Domain of Dependence
- how come massless photon has energy
- Mach's Principle: Right or Wrong?
- Very quick simple question
- Conformal spacetime
- Does compressing a mass to a smaller sphere change the curvature of space?
- Acceleration Transformation
- Worm-hole Question
- In flux of negative energy and black holes
- Equivalence Principle
- Time dilation where there is no net gravity?
- Riemann tensor: indipendent components
- Lagrangian equation in special relativity
- "Absolute" light speed or velocity or both?
- lorentz violations
- Euler-Lagrange eqns confusion
- Should a stationary charge on the earth radiate?
- A non-inertial frame is non-inertial with respect to what?
- Derivation of Proper Time and Proper Space
- light speed thought experiment please help
- Twin Paradox (by acceleration)
- question about dimension [G]=-2
- Time dialation
- Noether currents associated with diffeomorphism invariance
- Faster than light / compress space
- mass and relativity
- Gravitational time dilation, redshift and doppler
- What does E=mc^2 mean? How can it be used in an example?
- What is spacetime?
- "Topography" of spacetime over time.
- Why can't we see the light before we turn on the bulb?
- 4-momentum question
- Does gravity vary with velocity?
- Weyl tensor
- how to diagonalize a warped metric
- Laps and shift function
- question about derivation of surface gravity of a black hole
- Spacelike and Timelike singuralites
- Only Galilei and Poincaré
- Information Transfer and the speed of light
- Boosting the frame basis
- question re: time dilation equations
- Einstein relativity- radiowaves when travelling at v>0.1c
- basic questions about general relativity concepts
- why do black holes die out?
- Special relativity: local frames versus global frame in a loop scenario
- Confusion About Rest Energy
- What happens to a laser pulse that is beamed through a gravity well?
- Travel time for a space ship at relativistic speeds
- Length contraction and the direction of motion
- Absolute speed of light
- Speed of Light
- special relativity
- 'Creation' of Mass?
- Relative motion
- Invariance of spacetime interval
- Opposite beams of photons or electrons
- Photons have no mass?
- I'm wondering about gravitational wave detection & why inteferometers work?
- describing 4-vectors in space-time
- What is Gravity?
- Help with understanding Minkowski diagrams
- density in the friedmann equation
- possible to adjust light with magnetic field?
- self-rotating body with speed of light
- Derivation of classical limit in c = 1 units (i.e. without cheating)
- Can one determine that an instrument is an accelerometer locally?
- When will they meet?
- Will it radiate?
- Resultant time dilation from both gravity and motion
- Atomic clock and Latitude
- EM vector potential - covariant or contravariant?
- Noob question: If you travel as fast as light, time freezes so...
- Is the tensor product T^ab T_ab non-negative?
- A question that probably has something to do with simultaneity
- Blueshift and Blackholes
- Lorentz contraction question
- Do gravity waves experience doppler effect?
- Diagrammatic Tensor Notation from the Beginning
- spaceship trapped inside event horizon - serious flaw
- Is black hole existence relative to the reference system?
- We can not get back to our original position?
- E=mc2 and Postulates to prove it
- Centrifugal Forces and Black Holes
- Relativity/Simultaneity - I need help understanding a few things?
- The terms "length contraction" and "time dilation"
- Not Real but Relative
- Suppose We Were Blind...
- Heuristic approach to the Schwarzschild geometry - Accident of deeper meaning?
- Traveling anywhere in the galaxy in your life time
- Covariant formulation of Coulomb's Law
- Alice, Bob and Charge falling into Black Hole
- Local curvature of surface just outside Schwarzschild radius
- Who needs photons?
- Is Mass Relative to the Observer?
- Experimental verification of GR: Light bending
- The parable of the two travelers
- What's our time?
- action
- Space traveler and time dilation
- Is the gravitational time dilatation a real effect?
- Proof of the non-existence of ether
- Why is energy-momentum tensor Lorentz invariant?
- Simultaneity of events
- Curved Space-Time and the Speed of Light
- C Squared=E/M?
- Drop a charge in a neutral black hole
- Please explain General Relativity to me!
- Orbital velocities in the Schwartzschild geometry
- Back fall into the black hole
- Angular momentum and the twin paradox
- Entropy and Black Holes
- Ricci scalar
- Assignment of Variables plz Help!
- Speed Constancy of Light Implication
- Can one make inferences about what is inside a Black Hole?
- Space=time
- Question about relationship between quantum/relativistic physics
- Rotations in general relativity?
- What is the beggining of space time?
- Is there a universal frame of reference for which to measure speed with? Consider...
- Moving through spacetime
- Will LHC measure gravitational waves?
- Question on wording for paper
- Length Contraction (Dilation?)
- Stable orbits in Kerr metric
- What ‘Something is conserved’ means in curved spacetime?
- Kerr metric derivation (Adler, Bazin & Schiffer)
- quantitative answers from GR
- Confusion with curved space analogies
- "generic" naked singularity
- Is this a paradox in Special Relativity?
- Photon, Lagrange Point, Binary Black Hole
- metric, connection, curvature... oh my!
- The 14 postulates of Special Relativity
- Why we need Lie algebras?
- Change volume V(t)
- Absolute space? (stupid question)
- Derivation of Thomas Precession formula
- Constancy of the speed of light (locally)
- The significance of special relativity
- A historical question about the initial acceptance of Einstein's General Relativity
- Falling into a Black Hole
- Time To Near Light Speed
- Curled Up Time
- Timelike vs. null vs. spacelike four-current
- what is Minkowski metric?
- Mercury's precession
- Schwarzschild and Newton potential
- Stability of relativistic double star system
- Gravitational anomalies
- Einsteins Postulates
- Questions on Energy, Mass, and velocity
- Black holes and Time
- Circular space contraction
- Black holes and extended horizons
- Standing still in spacetime
- Schwarzschild metric as induced metric
- Equivalence Principle question
- Cumulative expansion based on H0 since T = 0
- Trying to understand GR and density
- how important was einstein, really?
- Make sure the Lagrangian symmetry?
- Duality of time
- Clock in isotropic gravitational field
- Gravitational time dilation on a non-spherical object
- Einstein-Cartan relativity
- Gauging Poincare to obtain Einstein gravity
- curvature ~ dT/ds or dn/ds??
- Gravity and its effect on time
- Frame Independance of acceleration ?
- Minkowski spacetime geodesics
- Why is the speed of light independent of a frame of reference?
- Generalizations of certain vectors
- speed of light in refractive material
- time in refractive materials
- geodetic precession and parallel transport
- What is the most accurate gravitational force equation?
- Creation of a FAQ?
- Does relativistic mass induce gravity?
- How could you visit yourself 10 mins ago?
- How does SR cause the speed of light to be constant?
- Time Dilation
- Density of a Black Hole
- Is gravity an inertial force?
- Gravitation force on Earth
- GR geometry in a Binary system
- Phase, Geodesics, and Space-Time Curvature
- Spacetime / Time Dilation Question
- Derivation of an old-time formula
- Do black holes really exist?
- Tensors create form metric
- Not completely getting Lorentz transformations
- Light SPhere Paradox
- Rindler question
- If mass becomes inifinite when approaching the speed of light, then ...photons?
- Cartan formalism
- Relativistic hydrostatic
- twin paradox
- Topology on manifold and metric
- Galilean transformation from velocity composition?
- Rotating sphere
- Redshift and Zeeman effect .
- integrating an accelerating Worldline
- ""any mass accelarating @ 'c' is light ""
- Maxwell tensor's antisymmetry
- Does the 4th dimension mean our universe is definite?
- Question about energy density in On the Electrodynamics of Moving Bodies
- folding spacetime?
- What is gravity?
- Relativity problem thats been bugging me
- Light interaction/interference
- Schwarzschild Radius, Constantcy of Light speed, and Time Dialation
- Anyone thought about this before?
- speed vs. light
- Twin paradox in a torus
- Attempting to obtain the velocity subtraction formula (help required)
- Inverse Compton Effect
- Closure Speeds
- Sadi Carnot
- Relativity of simultaneity: the source of the headache
- Frames vs Lines of Simultaneity
- Inertial frame in GR
- infinite mass
- Upside Down Pendulum
- Theory of Simultaneity & Wikipedia article
- collision practice problems/tutorial
- The Painleve–Gullstrand chart
- matter to energy
- "Open" and "closed" in the geometrical sense vs the thermodynamic sense
- Simultaneity
- One dimensional collision of 2 unequal masses
- this is just wierd
- Speed and Spacetime Distortion
- Are photons massless?
- Symmetry group of wedge
- Layman's doubts about Gen Relativity
- GRAVITATION by MTW: p.49, lambda or tau?
- Relative charge and temperature
- Velocity and mass?
- time dilation and length contraction for rotating black holes
- Relativistic Effects on the E-field
- Minkowski Space-time (need help)
- Definition of a symmetric connection
- Velocity in space
- Cosmological Redshift in FRW Coordinates – Energy Conservation & Time Dilation
- Order of Operations, Lorentz Transformations & Superposition
- Negative Gravity (not dark matter)
- Newton Vs Einstein
- conservation of the volume form
- Time Dilation Problem
- Ball dropping and frame of reference
- One-Forms
- Does a photon have energy density??
- Spatial distance in GR
- Acceleration/Deceleration in SR
- Causality violation from FTL signaling within the same reference frame only?
- Does electromagnetic radiation from pulsar stars
- Minimal mass from cosmological constant?
- mind problem
- velocity subtraction problem
- Variational methods on Lagrangians (D'Inverno Chapter 11) - continued
- If photons don't have mass, why do their paths "bend" in a gravitational field?
- Cauchy surface
- Can an observer know he's in a black hole?
- Summation Notation
- Speed of the light!
- Interesting General Relativity Scenario
- Just what is time dilation?
- Hyperphysics: Hafel-Keating experiment
- what is timelike?
- The Minkowski equation
- Speed of object emerging from wormhole
- Time paradox (?)
- simple realtivity: Length contraction
- The General Relativity Elevator Thing
- Doppler Effect/Time Dilation
- GR. Mach and cosmic redshift
- What does it take to understand GR?
- Ideas about black holes, light, and time.
- electromagnetic stress energy tensor
- Quantifying relativity of simultaneity
- Is there such thing as relativistic angular velocity?
- Another SR train paradox
- Time dilation and quasars
- basic time dilation
- Definiton of Vector
- Does light must be wave-like in Einstein mirror clock thought experiment?
- GRAVITAION, by MTW, Exer. 2.6
- Invariance of Lorentz Force
- Calculating the binding energy of a black hole
- The Collision Clock Experiment
- The Switch Paradox
- Fermats P & Gravitational Lensing
- GRAVITATION, by MTW, Exercise 2.7
- List of people who understand relativity
- Thin shell velocity is greater than speed of light?
- Is physics plain classical and Relativity an illusion?
- The Speed of gravity
- Gravity and Acceleration
- Spacetime
- Laser beaming
- Thin shell under the horizon
- Weird thought.
- Is there a proof of parallel universes?
- Stone's derivation of Thomas rotation
- Making sure events are simultaneous in S'
- The conundrum of stress energy tensor in GR versus QFT
- Quick length contraction question please
- Confused about relativity???
- Help with Lorentz Transformation
- One-Forms
- Speed of a light spot
- Relative velocity and work done
- Time Dilation what is it?
- Schwarzschild solution without matter
- Repositioning clocks: continuing from the switch paradox
- Existence of solutions to Einstein's equation
- Is this a way to move faster than c?
- A bit of a confusion regarding light, speed of it
- Brown's derivation of Thomas rotation
- Spacetime symetry
- Intersection black holes
- Time dilation an illusion
- Magic Cord?
- Photons in a Box Contribute Weight
- Time dilation inside the second horizon of the BH
- Is event sequencing relative?
- paper on white holes
- GRAVITAION, by MTW, Box 3.3
- How long does it take to go 10LY?
- what was the motive of michelson morley experiment
- Spacetime Fabric
- Minkowski Equation - II
- Approaching Mirrors
- mass increase from high velocity Q
- Mmx-3
- Alternative Lagrange's Equations
- Nothing can travel faster than light
- Object in Vacuum
- Detecting absolute motion
- 100m sprint at light speed.
- Conformal group -> Poincaré group
- Does general relativity allow for faster than light travel?
- Minkowski-minkowski thin shell paradoxon?
- confused about e=mc2
- equation verification
- streched spacetime
- Electric switch paradox
- Need help understanding something. About light speed - Thanks!
- causality in GR (was "Is event sequencing relative?")
- Special Relativity/Lorentz Transformation Derived in two minutes
- TIme Dilation & Quantum Entanglement Question..
- Are accelerating lines of simultaneity correct??
- thermal effect on rest mass
- Reframing and further acceleration
- Relativity of velocity
- speed paradox
- Dynamics of thin shells in GR
- Taylor & Wheeler on Thomas rotation
- Minkowski Space Basics
- CTCs violate no-cloning
- How do you derive E2= (pc)2 + (mc2)2
- how we transform enery into mass?
- Time dilation or time relativity?
- Do photons age? Do they remain stationary in x4?
- Experimentally probing the photon's reference frame
- phase vs group vs signal velocities
- non-reciprocal Time Dilation
- When is the arrival detected
- Extrinsic curvature
- speed of light not constant
- Transport
- C being constant in all frames deduced backwards..
- Is it possible that black holes do not exist?
- F = ma doesn't work when aproaching c
- General relativity does not seem to address gravity
- From special to general relativity: why?
- Can wormholes form from shell collapse?
- An example of moving towards a light source
- breking speed of light
- deducing some GR from SR?
- Tangent space vs. Vector space
- some technical questions about Birkhoff's theorem
- General relativity flaws
- Is Gravity a force, or not a force?
- E=mc2 & Minkowsky spacetime
- A question about reference system and time dilation
- flat time slices in Gullstrand–Painlevé coordinates?
- relativity train and clock synchronization
- Lorentz factor equal to infinity + lots of questions
- light implying consistency between QM and SR
- Mirror questions
- Energy conservation and universe expansion
- speed of light ideas
- Lorentz Transformations Question
- Gravitation #3.14
- Relativistic particle in Coulomb potential - any analytic solution?
- Problem with fluid mechanics part of GR derivation
- Speed of light in NON-inertial frames
- Why "light clock" is flawed.
- 1.5 Times the Speed of Light
- A little confused about how Relativity works?
- Special Relativity and the Particle-Antiparticle Problem
- Possibility of time travel
- Help With Raising and Lowering Indices
- Given Riemann & connection, does time variation nec'ly imply full spacetime metric?
- Software for relativity?
- Another relativity check please.
- I need to calculate δR: R is Ricci scalar
- On the Speed of Light Again!
- Penrose diagrams in general
- is a function contravariant?
- Doubts about Einstein Field Equations
- question on lorentz transformation equations
- is there any reason for tensor indices being ordered one way or the other?
- Why is it a problem that gravity is so much weaker than the other forces?
- The scope of inertial time dilation?
- The Double Slit Experiment from a Photon Point of View
- Relating SR time dilation and GR time-passage variation
- C and frames of reference.
- Local lorentz tranformations of fermion action
- Time as a fourth dimension
- change in internal energy => change in rest mass
- Curved Space-time and Relative Velocity
- A beam of light compared to bullet in gun
- General relativity time dilation
- Length Contraction Euclidean Space
- photon beaming
- A few simple questions about clocks moving slow relative to observers
- Light has mass, and it travels at the Speed of light, so a massless object.....
- Schwarzschild metric not stationary inside the horizon?
- Diffeomorphism invariance and Noether's theorem
- 2 spinning or orbitting objects and their effect on time
- spherically symmetric metric form
- Question about calculating time dilation of clocks at sea level
- Are forces subject to the doppler effect?
- satisfies Killing equation, but not a Killing field?
- tensors from metric and its derivation
- Traveling at the speed of light in orbit around a black hole
- Maxwell's Equations in the Light of General Relativity
- Cosmic Relativity
- Moving though space but not time?
- General Relativity and a Force Mediating Graviton?
- EM and Gravity
- Laws of physics are the same
- The speed of light?
- Rindler Horizon
- Energy loss of a photon moving against gravity
- Geodesics doubts
- 3body decay and lorentz factor question
- Bernouilli (ideal gas) method on Photongas? Components of light?
- Time Travel and the Conservation of Matter Problem
- Metric notation
- Same old song and dance - special relativity
- about relativity
- Elementary question -- Special relativity
- Geometric Description of SR
- r=0 singularity
- Speed of Light in Cesium Vapors
- variation of quadratic action
- General Relativity Basics: The Principle of Equivalence
- Clock rates and effective ptotential.
- Maxwell's equations in curved spacetime.
- Why Is It Impossible To Reach The Speed Of Light?
- GR with Riemannian (++++) metric?
- Quick question about the speed of light.
- Space-Time curvature? the units?
- Please set me straight about velocity based time travel
- Gravitational lensing paradoxon!
- Does heat generate additional gravity
- Help with GRT: Masses on a sphere
- Light speed and time
- Regarding quasars not showing signs of time dilation.
- Motion in Spacetime (using internal forces), swimming/gliding.
- How are the twins distinguished?
- things that can't happen on a manifold
- Time dilation due to relative velocity
- name of the experiment
- Length contraction and rod falling thorough a grate ?
- Quick question - has length contraction actually been experimentally confirmed?
- Question!! "About a light beam....."
- Question about how time works?
- second postulate of Special theory of relativity-help
- Orthogonal diretion on the Minkowski diagram
- Potentials, connections and curvature
- maths of E=MC squared, please can someone explain the maths?
- The opposite of the limit of light
- Representation of covariant and contravariant vectors on spacetime diagrams
- curved space/LP spaces
- Maxwell and SR
- Concerning reference frames
- MTW: Exer. 8.12, pg. 215
- time dialation
- particle-like solutions?
- gravity
- Derivation of proper time in acceleration in SR
- the main obstacle in learning relativity related theories
- STV Gravity
- Acceleration from radar info
- conservation laws in GR: a messy picture?
- Long Rocket
- "Radius" of the Universe
- Rindler coordinates
- MTW: Exer. 8.11, pg. 215
- Does my Thumb warp spacetime?
- Why is there a C?
- Resolve to the Twins Paradox – Frame of Origin
- are the doppler effects of sound wave and light wave of different roots?
- c=distance/time?
- Is the wire necessary to create a B field?
- A Rookie Energy Query!
- GR Vacuum solutions
- Questions about lights constant and photons
- Question about length contraction (geometric way)
- Hawking singularity theorem -- what if not all geodesics incomplete?
- Is time constant?
- Planck relation, relativistic doppler effect, and relativistic mass
- Two travelers both in Inertial Frames
- confused about time slowing down...
- Relativity query - communication with an object at light speed
- Alternative form of Minkowski metric?
- A little bit of paradox
- Travelling greater than speed of light
- Reference Frames in Simultaneity
- Questions for a physicist
- Magnetic Monopoles and Gravity
- Special Relativity Paradoxes
- charged tachyons?
- Derivation of Hyperbolic Representation from Lorentz/Minkowski equations in SR
- Ehrenfest / rod thought experiment.
- Center or mass in SR
- Speed of light & streaming video!
- path of light invertible
- weight of scalar density
- Muon confusion
- experimental data in relativity
- length contraction
- REAL inertial motion???
- REAL motion 2
- Question about alpha, the fine structure constant
- Time and Motion
- Clocks falling into gravity wells
- Special relativity on a circle
- exceed the speed of light
- Pi and Gravity
- Multiple clock thought experiment
- open question about accuracy of measurement and frame of reference
- velocity of gravity wave
- Special Relativity: Going from A to B on a helix
- Tipler Cylinder
- I understand time dilation with light clocks, but...
- Counting independent components
- The use of electromagnetic resonance to distort space time
- Beginner's questions on time dilation
- Relativistic mass affect weight of an object?
- Speed of light in Non-Inertial reference frame?
- conservation of energy predict invariance of elastic collisions?
- relativity plus gravity
- Information transfer that is faster than c?
- Lorentz vs Spin Counter
- Negative squares using the space time interval invariance
- Reasons why lightspeed travel is impossible
- Falling elevator
- Basic question about the nature of light and time
- Lorentz vs space time interval
- Does flat spacetime actually exist around us?
- Acceleration and Time Dilation
- What is spacetime exactly?
- General Relativity and Heisenberg Uncertainty
- Energy vs wavelength for a photon in GR
- Structure of a gravitational wave?
- differing definitions of expansion, shear, and vorticity
- General relativity breaks down at Planck scale
- Mach's principle
- Riemann normal coordinates
- Can we "use" the Andromeda Paradox?
- Gravitational waves are also redshifted?
- Can anyone tell a good quotation about GR?
- If it's all about frame of reference, does it matter how much stuff is in the frame?
- Basic question about the speed of light
- Einstein on Space
- Dimensions of Spacetime
- Voyager probes and time dilation
- General Lorentz Matrix in Terms of Rapidities
- Spaceship arriving at a planet
- Local Lorentz frame
- What is the difference between mass and energy?
- Gravity wave detectors
- Time dilation argument
- Length Contraction
- Time dilation and black-hole--black-hole mergers, and ringdown gravitational waves
- Light in Elevator Question
- Tidal Effects in the Schwarzschild Metric
- Time dilation sonfusion
- General relativity with infinite speed of light?
- Currents in the Universe
- relativity: light in train with person in it
- e=mc^2
- The Schwarzschild Metric - A Simple Case
- Constancy of metric tensor components as a test of curvature
- Faster than Speed of light
- Does Gravitational Time Dilation imply mass change?
- Einstein Field Equations???
- The length of a falling elevator
- Definition time
- Wormholes?
- Lorentz transformation
- Balance of Forces - Electrostatic Force vs. Gravitational Force
- Relativistic bike
- Tensor transformation under reflections
- Can SR handle acccelerating frames?
- What Lorentz Covariant Objects Can You Name?
- Einstein-Hilbert Action --> GR is a saddle point?
- Time Distortion due to Mass
- e.p. implies no gravitational shielding?; Feynman?
- special relativity / orientation in space with photons
- Special Relativity and Black Holes
- Redshifting
- relativistic work/energy
- Relativity question(layperson level)
- Simultaneity:Confused and almost confident about my own logic
- Clarrification of Time Dilation
- Help wanted with an explanation
- Hypervelocity stars and RX J0822-4300
- Metric Sign Convention
- 'relativity' of radiation of uniformly accelerating charge
- Dark Matter and Thorne's unlikely time travel
- Relational Mechanics
- Negative energy in special relativity
- Maxwell's idea to measure aether
- Newton and Galilei boosts
- Time Travel: Make me a believer
- Relative Time Question
- freefall from Infinity
- The Einstein and Ricci tensors
- Gravitational Attraction of a Massive Particle
- Light & Time
- How do you envision a gravitational field?
- Light clock with something else than light
- Trying to understand time delineation
- rotating black holes in Penrose diagrams
- New to GR, having trouble with lagrangian calculation
- Wrong picture of GRT
- Weyl curvature and tidal forces
- Needing a solid example of a composite mass value
- Velocity needed for a certain change in time
- Maxwell's Equations in a Medium
- Light and gravitation
- time dilation or length contraction
- The Speed of Light - Nothing can go faster?
- Another Way of Looking at Gravitational Time Dilation?
- Is Minkowski space the only Poincare invariant space?
- Question regarding inertia
- Perihelion advance expressed differently
- twin paradox and other things
- Newtonian generalization of Komar mass
- Any alternative "article" websites for students/teens?
- Universe inflation faster than c
- Irrelvancy of motion in C perspective
- Absolute motion's point of reference
- Does it even make sense to compare lengths? (Lorentz contraction = special case?)
- why the minus sign?
- On black holes and relativity.
- Postulate Approvement
- 4-vector addition
- Time Dilation Scenario
- GR/Hawking Radiation Contradiction
- What Does "Anisotropic Effective Mass" Mean?
- Light, gravity, and red shift.
- Question from a light weight...
- Propagation of light emitted in a direction opposite to the translation of its source
- gravitational waves
- vector potential in curved space
- experimental tests of the stress energy tensor
- Can you help me with this equality?
- Gravitational acceleration VS the speed of light...
- Does light slow down (relativistic) near a black hole?
- velocity and redshift
- Fermi Normal coordinates for an infalling observer
- Local flatness of spacetime
- Age-Changes Caused By Instantaneous Velocity-Changes
- Can you fall into a non-accreting back hole?
- Questions about Einstein SR interpretation
- infinite mass?
- Could someone explain the fourth dimension?
- Pioneer Spacecraft
- time dilation
- gravitational redshift from doppler shift
- Angular momentum in curved spacetime
- antisymmetric metric
- what is the exact change in frequency for an approaching object?
- Krasnikov metric for wormhole
- Traveling through space
- I am missing something in the train paradox
- Minkowski space metric space?
- Blue shifted cosmic microwave background photons
- Why are mass and energy related by the speed of light?
- time dilation or time contraction?
- most fundamental reason why boosts have to have L(-v)L(v)=I?
- curvature of spacetime inside of stars and planets
- "Opposite side" of GR
- Synchronization of Earth clocks
- no. of field equations and components or Riemann tensor??
- why spacetime
- Photons and time
- Time dilation due to SR plus GR
- Simple question about inertial frames of reference
- Frames can really travel faster than light?
- speeds faster than light
- Why photons don't fall to Earth?
- "Proper distance" in GR
- Electromagnetic waves relativistic
- Special Relativity (i'm confused)
- Why do we specify chart image is open?
- Light "hook" or tether..?
- Relativity and Electrostatics
- Grandfather Paradox
- Twin paradox?
- topological action (veirbein)
- Time dilation dilemma
- How do spinors differ from tensors?
- What is 'Curvature' of Spacetime
- alpha matrix
- Confused about this blueshift/redshift "paradox"
- Law conservation of charge relativistic
- Equations of electromagnetic potentials
- A simple experment
- electromagnetic radiation
- special vs. newtonian
- time dilation in an acc. vs gr. field
- force due to gravity vs force due to accelratio
- well-motivated theories with nonzero PPN ζ?
- Geometric interpretation of the spacetime invariant
- Universe acceleration limit?
- einsteins formula
- which side?
- Einstein's second postulate (one-way speed of light)
- Simultaneity in General Relativity
- Question about the theory of relativity.
- Relative Length to Relative Volume
- asymmetry in black hole formation, and a possible hand-wavy no-hair theorem
- Near Light Speed/Time Travel
- MTW Formula 25.38 Coordinate Time
- where do I get?
- Ricci tensor: symmetric or not?
- How would this experiment play out? Length contraction / black hole
- Possibility of Traveling Faster Than Light?
- Local Poincare Transformation
- Is General Relativity Time Symmetric?
- Dual Manifold
- Lanczos equation
- extremal surfaces
- Calculating the area of a sphere
- Speed of light question
- Faster than light? Faster than light! Faster than light...
- Speed of light Described by relativistic mechanics
- Einstein & Bended light ?
- Speaking to an observer (stationary to you) via radio while moving at speed of light.
- constant speed of light
- Can Graphene/Nanotubes Change Mass?
- Cauchy surface in globally hiberbolic manifold
- traversing large distances
- Faster than the speed of light?
- Spacetime curvature
- Photons "live" in a singularity?
- The Origin of Inertia
- Going crazy: can someone spot the error in this simple derivation?
- Basic time dilation question
- Theory of Relativity?
- Negative Schwarzschild mass parameter?
- Education in Relativity Theory
- Light's constant speed and frames of reference
- Rod shortening of General Relativity
- let's say i'm in einstein's elevator
- isn't it?
- Ticking Clock and Pendulumn Thoughts
- why do we treat earth and why does it work as an inertial frame
- Barn-Pole Paradox Discussion
- Expressing 4-potential as a Fourier integral
- orthochronous transformations?
- Spacetime and limit c->infinity
- Lorentz vs Einstein
- Looking to understand time dilation
- Relativity and the conservation of momentum
- Do photons create gravity?
- Acceleration Questions
- Does this make sense?
- Time
- Where laser beam will fall (see the attachment)
- Newton's Third Law, Speed of Light, and Relativity question
- Gravity question.
- photons and and equivalent number of atoms on gravity
- Einstein and Lenard in Bad Nauheim
- Finding Components of the Christoffel Symbol
- Triangle GR thought experiment
- Trying to understand the Lorentz transformation.
- spin of the photon
- what are the meanings of highlighted term?
- Major difference of Inertial and non-inertial frame of reference ??
- Schwarzschild metric in 3-dimensional space-time
- Do materials have temporal elasticity?
- Einstein was wrong...you can beat the damn game...
- A question about Gravity
- Lorentz transformations of the angular momentum
- definition of "black hole" for the purposes of no-hair theorems?
- upper- and lower-index Levi-Civita tensor/symbol
- On white hole
- Gravity field equation for evaluations.
- Faster than light?
- When does Hawking radiation begin?
- Metric for space-time in SR
- Covariant derivative and geometry of tensors
- Lemaitre coordinates
- Shear stress in Energy-momentum Stress Tensor
- Chasing The Impossible
- choice of scaling function for Penrose diagrams
- Time dilation paradox
- local Minkowski space and free falling
- Is there a maximum acceleration limit?
- An issue I'm having with time dilation and other effects of speed
- Question about spacetime
- Dimensions and information content
- Velocity addition ain't what it used to be
- Orbit of Moons & Shapes of Planets due to Warped spacetime
- The Theory of the Transverse Doppler Effect
- What are valid coordinate transforms (diffeomorphisms)?
- Can wormholes make you travel faster then c
- Wormholes as space travel?
- Events in different reference frames
- Relativity and the arrow of time....
- why faster than light is impossible?
- Eddington Finkelstein coordinates in the Schwarzschild spacetime
- definition of conformal maps
- Doppler effect and the twin paradox
- Why is the speed of light same in all reference frames?
- existence of quasi-euclidean spacelike hypersurfaces?
- gravity /electromagnetism /measuring
- Why is light the fastest ??
- Lorentz invariance and General invariance
- What is the different between Minkowski Space an Semi Riemann Space?
- Random General Relativity conceptual questions
- Varitaion on the twin paradox that just doesnt work out for me
- The Pioneer Anomaly and Vacuum Energy
- coordinate singularities and coordinate transformations
- Faster-than-light speeds
- "No speedometer"
- Simultaneity for entangled particles
- Question from Weinberg's cosmology text
- Lorentz factor for slow speeds
- General Relativity Effective Potentials
- Event horizon: light delay and grav. time dilation
- third derivative of quadrupole moment as source of radiation
- A question from Rindler Relativity Textbook
- acceleration of a circulatory particle
- Reference that explains general relativity
- Einstein needs to show his work
- SR time dilation problem
- Relativity of simultenieaty
- Gravity curvature and graviton
- Conceptualizing travel toward a light source
- Degrees of Freedom
- Question about length contraction
- massless Klein-Gordon equation not conformally invariant??
- Extremely large light clock
- Paradox within the twin paradox
- Covariant quantities in GR
- What would reality be like without SR?
- SR length contraction question
- Conditions for spacetime to have flat spatial slices
- The speed of light in a gravitational field
- Does gravitational mass change during collapse?
- Chern-Simons form
- On Covariance and Invariance
- Special relativity:Reality or measurment error(?
- Volume element as n-form
- angle in special relativity
- General relativity and tides
- How does light from the past ever reach me?
- Do you know how to derive the General Theory of Relativity?
- Dynamics of the Slowly Accelerated Electron from Einstein's original SR paper
- proposal for measurement of Lens Thirring effect
- Are these mistakes?
- Yet another Twin Paradox thread
- What are the units of vectors and dual vectors?
- Why Two Defs of Four-Momentum?
- speed of light relative to what?
- Will two clocks be synchronized after a period of time dialation?
- Surpassing the speed of light?
- Is clock become slower or faster
- Expression of Gravitational Potential in GR
- A descriptive picture of radar simultaneity
- Initial frame
- empirical test of Einstein's famous goof
- Concession
- Transitivity condition for Einstein synchronization and the one-way light speed
- Matter and time (travel)
- Dirac brackets and gauge in special relativity.
- Mass equivalence and instantaneous gravitational field
- Solving for g_φφ=0 in charged/rotating BHs
- Gravitons not required?
- Stress-energy tensor
- mathematical explanation of maximum speed limit "c'
- Regge Wheeler Equation
- slowing light down?
- Special relativity adandons Maxwell's mechanical interpretation of EM?
- Measuring procedure for Fermi Normal coordinates
- Tensor contraction
- Relativistic Mass and Electrons vs. Muons
- On "when does Hawking radiation begin?"
- Speed of light dilemma
- Has General relativity been proven wrong ?
- Is relativistic mass not an appropriate concept?
- Past Present and Future
- Tapping a message over lightyears in an instant?
- Where does the Einstein-Hilbert action come from?
- Deriving the equations of motion in f(T) gravity
- Kinematic theory and arbitrary coordinatization
- -ictan(alpha)
- Can general relativity be constructed with differential forms?
- On a spinning wheel
- d'alembertian of lorentz transformation matrix
- Source distribution
- Hawking Radiation
- Principle of Equivalence
- De Sitter Space-Time Geometry
- E on q independent of v - confusing?
- Question on solid vs light
- A few questions about the einstien field equations?
- The form of the lorentz transformations
- ADM Mass for a diagonal metric
- Consequences of the Equivalence Principle
- Question about Space & Time?
- general metric with zero riemann tensor
- Relativistically Invariant Tensors
- length contraction, light speed and a bomb
- Contradiction in Relativistic Simultaneity in Taylor-Wheeler Spacetime Physics?
- Decreasing Space-Time Density
- Layman's question about the application of the curvature to space
- How did Einstein come to the conclusion...
- please clear up math
- Contradiction in Taylor-Wheeler's example of spacetime invariance
- If the universe is expanding faster than light, gravity doesn't exist everywhere?
- Frame dragging question.
- Magnetic or Electric Field or Electromagnetic Field?
- The Big Bang singularity - does it have infinite energy?
- The Plane Electromagnetic Wave in Vacuum
- Infinite brightness in the singularity?
- Time shear in a rotating body.
- Installing GRTensorII in Mac
- Question about Big Bang and Black Holes
- Actual earth measurement contradicts measurement predicted by special relativity
- Black-hole complementarity
- The Schwartzschild solution - why no Stress Tensor?
- Why perihelion shift and not aphelion?
- Tension in slowly rotating cylinder in gravity
- I don't understand the result of my Earth-muon calculations
- pedagogically direct demonstrations of SR and GR
- Rotation of a vertical cylinder in a gravitational field
- Trying to understand Relativity
- A question about light speed
- Linearity of Lorentz transformations
- Time dilation and stem cells therapy
- red-shifting
- Time dilation formula for constant acceleration on a circular path
- Why there is space-time
- 2m car near lightspeed fall into 1m hole?
- Gravity and mass in General Relativity
- Impossibility of Backwards Time Travel
- The WHY of speed of light vs. the FACT thereof
- Electron-positron pair production
- Two dimensional anti de Sitter space without cosmological constant?
- Near Light Speed Travel & Time Dilation... I don't get it.
- Tolman versus Recami: tachyons
- Black Hole time dilation + biological paradox
- Thread on Lorentz Invariance Violation
- What happens in this scenario? (Poll)
- Solutions to Killing's equation in flat spacetime
- Does gravity REALLY pull on light? Really?
- Is light bound to travel at C?
- Curvature in space time ? Gravity
- Are there any energy change of photon in different frame?
- Device to measure curvature of spacetime.
- Confused about moveing through time
- Does light really travel in same frame of reference
- Some help understanding the metric tensor
- Number of nontrivial components of thin shell equations
- Do Black Holes Grow?
- Faster than the speed of light
- Mass of Earth/Sun
- Michelson interferometer and Doppler effect! Having a brainfart
- Problems in general relativity
- looking for Lagrangian Systems with Higher Order Time Derivatives in the Lagrangian
- On the Electrodynamics of Moving Bodies
- The strange world of Phil the photon
- Time Dilation Question
- Could you use contained light as a form of propulsion?
- Time Dilation Paradox
- Relative speed and gravity?
- Space Travel Scenario
- Can anyone tell me where to look for an explanation of this equation? (EG DM-decay)
- Negative moving coordinates and Time Dilation
- Both think the other's time is slower Paradox
- How Clocks (Seemingly) Ruin Everything
- Rest mass ? What on earth ?!!
- Relativistic Acceleration
- relativity of simultaneity help
- Understanding accelerated frame in general relativity
- "Locally Lorentz"
- Preserving Magnetic Polarity in a Revolving Reference Frame
- If I was traveling at 51% the speed of light...
- Has Special Relativity really been proven?
- Acceleration vs Gravity and effect on time/clocks
- Time Dilation Vs. Length Contraction
- asteriod vs earth
- Contortion tensor
- Relativity Concepts
- velocity addition expressed as gamma
- FTL Possible?
- Can someone please explain to me what the Christoffel symbols symbols are?
- Is the presence of 'c' in E=mc^2 coincidence?
- GR by Einstein himself
- Relativity:Changes and Extensions
- twin paradox initial acceleration
- What is the best way to be a relativist ?
- Gravity and curvature
- Can you accelerate faster than the speed of light?
- Geodesic equation via conserved stress tensor
- Timelike geodesic equations for the Schwarzschild metric
- Time Dilation Light Clock Example
- Sources of gravity
- Gravitational Analog to Maxwell's Eq.
- Dark energy & pressure
- World line problem
- Mass-energy equivalence.
- Mermin's geometrical approach to SR
- SR Momentum
- Question about Black Holes and Speed
- Einstien field equation calculations
- Coordinate transformation and metric tensor
- Derivation of Energy-Momentum Relation WITHOUT using relativistic mass?
- A study of the motion of a relativistic continuous medium
- Coordinate Systems: GR vs Newtonian
- Independent equations and initial conditions in GR
- rest energy
- Am I taking crazy pills or is Einstein missing a factor of gamma?
- How much matter can you put in space and time?
- Mass-Beam behaviour
- The Stress part of the Stress - Energy - Momentum Tensor
- Functional derivative of connection with respect to metric
- NOOB Question
- From Equivalnce Principle to General Relativity
- simple question about geodesics
- switching roles
- An absolute time clock!
- Does general relativity give curvature a magnitude?
- General Question on Schwarzschild Metric
- The space-time interval
- Most power gravitational wave sources
- Is this a type of Horizon?
- Special relativity Only Valid Under Handpicked Conditions?
- E=MC2- question
- A new type of black hole?
- On the Physical Separation of Time
- Question about twins
- Simple Question On Relativity
- Time Travel and Free Will
- Gravity time dialation and acceleration?
- Proof of GR
- Could an observer prove he is in a CTC?
- covariant derivative in spherical coordinate
- Why universal space?
- cosmological constant
- Project in general relativity
- Gravitational waves due to acceleration
- E=mc2 | If something has near zero mass, can it move?
- Lorentz tranformations and time slices
- Gravitational Time Dilation
- Michelson–Morley experiment using objects with mass?
- Is Relativism due to Doppler in Mermin's book?
- Time dilation problem
- The feeling of time while traveling at the speed of light
- Clarification on light speed experiment
- curved or non-curved space, what is more fundamental?
- What happens when a null geodesic splits in two along a path moving forward in time?
- Important and/or Interesting Spacetimes
- Lorentz Transformation
- the 4th dimension?
- problem in equilance
- On the Nature of ds[in GR]
- Link between Thermo and Special Rel???
- Magnetism
- Gravity & Time
- Rotating vs. Stationary Mass Grav Effects?
- length and time comparisons in SR
- Question about simultaneity
- Metric tensor of a non-homogeneous universe
- WIKI and Time Dilation
- Relativistic inelastic collisions?
- faster-than-light newbie question
- No agreement on distance?
- Components of 4-momentum
- If Two Spaceships close at a speed of 1.4c...?
- Time dilation
- Solving Einstein Field Equations for Minkowski Space with CTC
- newb ques: relation between Einstein's accelerating frame model and the graviton?
- Question about Brian Greene's book
- A cart with a light clock
- Distance Perception in SR
- Michelson–Morley experiment?
- How to measure the one way speed of light.
- Question about black holes and gravity
- Gauss gun propulsion
- Lorentz invariance and GR
- Time dilation question for a sci-fi story premise
- In E=mc2, Why C?
- Question about Killing vectors in the Kerr Metric
- Picturing Ricci tensor
- Is time in our universe absolute?
- What are the best lines of reasoning for why nothing can travel faster than c
- Equivalence principle?
- Relativity and Gravity
- Gravitational redshift and observer/emitter
- Relativistic Degrees of Freedom
- Testing whether gravity bends light
- space-time puzzle
- Interacting gravitational fields
- Time and distance
- time dilation in horizontal clock
- Could gravity be described as distance compression?
- How to make two frames purely Galilean
- Derivation of eq of motion of q in static E?
- Tensor Rank of Stress Tensors
- Aberration of starlight due to....
- Why did Michleson assumed that ether is moving ?
- Coordinate radius [r]
- What are physics constant in Kerr metric?
- Relative Information and Time Paradox?
- N-body problem simulation and relativity
- Wrong example of Covariant Vector
- MMX and the earth's rotational sagnac
- Holographic principle and entropy mapping of a BH
- Foliation of Space Time Hypersurfaces
- Energy conditions in GR
- Riemann curvature tensor for some metric
- How can two distant objects influence each other at a distance
- Is kinetic energy determined by spacetime structure?
- charged black hole
- Hawking Radiation seems contrary to black hole dynamics
- Gauge theory of gravity
- How to send a faster-than-light signal (spot Paradox)?!
- Black Hole Question
- Alcubierre Drive
- Is it possible that all black hole singularities are actually the same singularity?
- Speed of Light
- Evolution of generalized coordinates in canonical approach to GR
- What is the EM Lagrangian in curved spacetime?
- vierbeins and spin connections as gauge fields of gravity
- Commuting the Lorentz transformation with derivative
- living beyond possible
- problem with light simultaneity..
- An Easy Metric for Einstein Field Equations
- Killing Horizon
- How does light know which path to take ?
- time dialtion
- Lorentz Transformations, help me grasp them?
- strange character of space-time !
- meaning of the word topological
- Does gravity slow time's passage?
- Falling into black hole
- mass term inside a metric
- Special Theory Of Relativity
- Fundamental question
- Einstein's Field Equations and Poisson's Equation
- Why does time dilation apply for objects moving with a velocity less than c?
- Intergalactic space travel and hydrogen "blasting"
- semi-colon vs nabla notation
- On the interpretation of a spacetime diagram
- Spacetime inside Quantum Vacuum or vice versa
- Twin Paradox revisited
- FRW metric symmetries
- Circular path laser and frame dragging
- LHC radial and tangential proton g-forces
- Gamma as a Jacobian of Lorentz transformations
- Energy continuity equation
- Gravitational Waves and Speed of Light
- Another gravity wave question...
- Relativity and the mass of photons.
- Gravitomagnetism & Gravitational Waves
- SR and electric fields
- Speed of Light - Highest Possible Speed?
- Cause and effect
- Where does -(ct)^2 come from?
- Photon to electron + positron
- purpose of Michelson-Morley Experiment?
- contradiction in relative simultaneity
- path that extremizes interval computed with polar coordinates metric in flat space
- Energy In The Universe
- Tachyons
- Gravity - an accelerating frame paradox
- Two Starships
- Time dilation on a proton
- Gravity effect on observed speed of light
- Whose clock is really slower?
- Relativity of Simultaneity and wave/particle duality.
- Why do singularities mean that GR "breaks down?"
- Circular orbits in SR
- Kaluza-Klein model
- Does a photon have a frame of reference?
- how
- Explanation of tidal wave formation in sea due toe gravitaion force of moon
- Is spacetime a matter?how can this matter be detected?
- length contraction (no calculations)
- A problem of congruency
- Does empty space move? What are the laws that govern its motion?
- Maxwell's equations in general relativity
- Self-replicating fields in EM radiation?
- Fast then light experiment
- Interpreting Gullstrand-Painlevé Coordinates
- Confusion wiht Curvature Tensor
- Scalar Curvature, R, for Dummies
- Need Help!
- laser and GR
- Help!
- If correct: a catastrophe in the Lorentz transformation
- Lorentz and Poincare Groups
- I can't understand time dilation in absence of absolute motion.
- Small problem with getting to E=mc^2
- Mass addition due to gravitational acceleration
- Time Dilation or Mass Dilation
- A noob asking about relativistic kinetic energy.
- Mass motion and time
- Killing Vector Question
- light clock question
- Relative force
- Relativity of simultaneity and cosmology
- Again on twin paradox!!
- Gravitational redshift formul
- variability of the speed of light
- Timelike and lightlike/null vectors
- From what frame of reference does the Earth orbit the sun?
- Tachyon properties.
- How does light bend under gravitational field(gravitational force), why?
- Time dilation and simultaneity: easier to see with a train
- Pioneer 10 Anomaly
- Equivalence principle
- Speed Limit of causal influence
- Why are electric field lines straight around electrons moving at relativistic speed?
- Relativistic Soap Bubbles
- Rest Length, Coordinate Length, and an argument for True Length
- What happens if an Alcubierre warp drive fails?
- Proper Time
- Christoffel symbols vanishing on a curve
- Affine parameter Schwazschild
- Entanglement
- Covariant derivative of an anti-symmetric tensor
- Reissner-Nordström metric for magnetic fields
- Wormhole
- SR and QED: how??????
- Acceleration is perpendicular to velocity
- Problem with relativity of simultaneity original example
- Authors of Relativity
- Beginning learning Relativity
- A Simple Time Travel Question
- Even...light would take an infinite time...
- LHC forces on a proton
- Photons and speed
- Lie Groups
- Does light itself bend spacetime?
- Is Einstein synchronization trivially true?
- free float through the event horizon
- Faster than the speed of light during acceleration?
- Einsteins Vs Newtonian Solution
- Constatly accelerating spacecraft
- fast moving batteries
- Lorentz transformation
- Perihelion precession of Mercury
- Expansion, redshift, energy loss
- What would actually be observed during Lorentz contraction?
- The experience of the infalling body of an EH
- Paradox!
- Why does General Relativity break-down at Plank Temperature?
- Some tensor confusion
- Help understanding a relativity train
- What are the 26 dimensions in the M theory?
- Reissner- Nordstrom metric- weak energy condition
- Acceleration from curved spacetime
- relativistic correction for gravitational acceleration
- Time deviation inside the Sun
- How does QFT address the problem of Locality in Quantum Entanglement?
- Why can't light escape black holes?
- The logic of information travel.
- induction paradox
- The Mass of Light
- Does the formation of a black hole start with QM?
- Improper Lorentz transformation
- Gravitational Collapse of a Cylinder
- Question on weak field approximation
- mass energy equivalence
- Spacetime, gravitational force
- Parallel light beams converge?
- Does Einstein's Theory of Relativity Substantiate the idea of Time Travel?
- Time to hit singularity
- Zeno, Stadium and SR
- EM stress-energy tensor
- Relativity of Simultaneity: Train-Platform Experiment
- Positions of the planets
- time travel
- Proper Length, Time
- Einstein GR is dead, viva Einstein-Cartan Gravity?
- Have a question about speed of light
- More questions about relative speeds.
- Question about the GR gravitational redshift experiment
- Black Holes - Scientific Literature
- Density of an object in Relativity
- Frame dragging from a light beam
- Landau & Lifschitz, "Classical Theory of Fields"
- Another question on FTL and time travel
- Clocks at different altitudes
- Condition for a particle to move relativistically
- Does the metric have to be symmetric? Why?
- Is mass vary with velocity?
- Is it possible rapid increase impact account for perception of time dialtion?
- Covariant and Contravariant Vectors
- Transformation law in curved space-time
- Growing Block Universe
- E & M Magnetism Relativity "Paradox"
- Simple SR
- Single positive electric charge in a closed universe
- Schwartzschild exterior and interior solutions
- Thought Problem Clarification
- MMX in water
- Can someone please explain "negative energy" to me?
- Causal structure of spacetime: intuitive reason for non-compactness?
- Killing vectors of minkowski space
- Special Relativity: Theoretical Questions
- "Velocity" of our universe through time?
- Rotation
- Clarification of Concepts
- Graph of Twin's Time Dilation
- Curvature of space
- contemplating Time Travel
- Field lines in expanding space.
- Light Cones
- One more time on Hawking radiation
- Need help understanding time dilation
- Intersection of bars moving at v>c
- t constant lines in Minkowski Conformal Diagram
- Does incurvation of space requires energy?
- Do all observers agree on the age of our Universe?
- two questions in one
- How would two massive bodies effect eachothers gravity?
- update on Devasia
- Length contraction from lorentz transformation. Keep messing up the proper length
- Bending of Light
- EM Differential Form version of Lagragian
- Explaining Photon Redshift?
- WMAP Data Redshift and Background Radiation
- Derivation of space-time interval WITHOUT Lorentz transform?
- Calculus of Variations in General Relativity
- The case for True Length = Rest Length
- Speed of light /time / and material
- "Large" diffeomorphisms in general relativity
- Charged black holes
- Gravity constant
- Proof of Length contraction
- general covariance and tensors
- is timedailtion dialtion takes place wth obsrver on earth observing highspeed rocket?
- Is the garvitay depend upon medium and is gravitaion force is quantized?
- Is there any materials on Null Electromagnetic Field?
- (noob thread) Expression for the Relativistic Doppler Effect at Arbitrary Angles)
- Just a question about light speed
- Question regarding time dilation, inertial motion, and acceleration due to gravity
- How to calculate the contraction of metric tensor g^ab g_ab
- Simplest way of deriving Lorentz transforms
- Confusion in Simple derivation of the lorentz transformation
- opinions on red shift?
- Relativistic momentum
- Appendix 1, Simple Derivation
- Surface gravity
- Conformal diagrams
- Relativistic centripetal force question
- The schwarzschild solution
- Easy Lorentz Transform Problem
- upper limit on rotation of the universe
- Questions on the nature of Speed of Light..
- The view of the naked ring singularity
- Frame velocity v. object velocity in derivation of 4-velocity
- Ultimate size of the Universe (finite)
- Warping of space?
- Is the 4th dimension Time
- Is atom created if time is taken away from space and acceleration?
- c represents the speed limit of the universe rather than the speed of light
- Why is there a universal speed limit, c, and why is it what it is?
- On conserved energy in GR
- Troll physics
- General Relativity is pure Mathematics
- polarization states via relativistic effect
- Discrepancy regarding time measurement
- coordinate transformations in gr
- Negative mass Schwarzschild
- Gravitation and Information, BH paradox
- derivative of metric tesor and its trace
- derivative of metric tesor and its trace
- A good video explaining time dilation
- I think my Prof did this wrong, Need Help Please
- proving that the sphere cannot be expressed in "flat coordinates"
- Big trouble with Kerr solution
- How much is space bended at the surface of the sun
- Neo-Lorentzian framework
- Mechanism of gravitational acceleration in GR
- metric covariant derivative
- Is it really possible to solve for how fast an apple will fall on earth with GR
- why is max speed, speed of light?
- Units in GR
- Where does a radially falling test particle cross the inner horizon of RN BH?
- ligth in curve space
- More detailed discussion on star collapse
- Difference between acceleration and gravitational field?
- Why do we perceive time to pass at the rate that we do?
- Speed of Gravitational Waves
- What is Newman Penrose Formalism?
- Time Measurement (revisited)
- B-E,F-D Statistics and the Lorentz Transformations
- Is time dilation relative, or absolute?
- The Lorentz Transformations and the Uncertainty Principle
- How to be an Inertial Observer?
- Time dilation light clock?
- Gravitational field in GR
- Rest Mass and Preferred Frame of Reference
- Mass dilation question
- neutrino at rest
- Time dilation and length contraction
- Einstein's Theory of Special relativity
- Constancy of speed of light and galiliean transformation
- Gravity is Time?
- diffeomorphism and constant curvature
- 'Mass' of an object at different positions in a weak gravitational field
- Gravitational pull (revolutions)
- Space time interval
- Physical implications of not-smooth metric derivative matching
- is gravity a force
- Surviving the event horizon: some thoughts
- What Action leads to GR?
- Can someone please explain to me why massless particles follow null geodesics?
- Mermin's (Special) Relativity without Light
- Taking derivative of the metric
- Linear FE for static, spherical body
- Advanced/Retarded Eddington-Finkelstein Coordinates and Incident/Outgoing Wave
- "mass" of electromagnetic waves
- E = Pc?
- Bel decomposition in 6-d
- relativity and light speed
- Is the speed of light actually constant or just always measured to be the same?
- Uniform Motion
- Having trouble writing down a metric in terms of metric tensor in matrix form?
- Scenario in an attempt to understand relativity
- Precession of Mercury’s Orbit
- Galilei, Poincare and conformal symmetry
- Do Total Current and Total Charge form a Lorentz Covariant Vector.
- How to obtain Kerr Metric via Spinors (N-P Formalism)
- Antigravity in General Relativity
- Faster than light travel: it either constantly happens or never
- Question about event horizon and Rindler space
- Light Clock
- Cause of Gravity
- Clock acceleration
- Reissner-Nordström repulsion
- Gravity can still be caused by force?
- The origin of the inverse square law
- Merging to two BH
- Gravitation of moving objects
- Time dilation yes, why no contraction?
- Space Probe vs the Sun - Relativistic Frames of Reference
- PSR J0737-3039 Frame-dragging effect
- Fizeau. What is connection between fringe shifts and velocity?
- Invariant quantities
- gravitational mass defect, weyl metric
- What happens to density as speed increases?
- Mass increasing with energy
- dynamics of self-gravitating dust
- If Earth's orbital speed doubled, would its mass and gravity double?
- Angular velocity and c: Is this a paradox? Can you explain it?
- Schwarzschild vs Gullstrand–Painleve and event horizons
- Kinetic energy and curved space-time
- Schwarzschild Killing Vectors
- How does the length contraction work for proper length?
- Riemannian Geometry is free of Torsion. Why use it for General Relativity?
- Spacetime curvature: Real or Not?
- Special relativity help
- Lorentz Invariance as local limit of Bigger Manifold
- Length Contraction causes Time Dilation?
- The Big "G"
- Mass a bend in space?
- Aberration of light
- Can X4 Be Regarded as Spatial?
- Hair brained, universal mapping theory (nonsense ?)
- Amplitude of wave stretched as well as red shift?
- Is gravity a bigger mystery than charge?
- Speed of Gravity.
- The part of relativity I never got, reference frame
- Simultaneity in General Relativity and Problem with coordinate systems concepts.
- Geodesics on a cone in flat space
- Lorentz Invariant Vectors and Grammatical Errors
- Diffeomorphism Invariance in GR
- A oarticle traveling at c is length contracted to what?
- gravity as an emergent phenomenon
- Length contraction Griffiths
- Invariant tensors and motions
- Can gravitational influence be measured?
- Is this at all possible?
- If light has no weight, how can it push objects?
- SLAC electron masses
- Reconciliation of GR and QED
- my train paradox
- Second fundamental form
- Mass inflation exactly equals time dilation?
- Inertial Frames in Relativity
- Is the magnitude of the Lorentz force always the same in different inertial frames?
- Planets in Revolution
- Angular momentum conservation.
- Acceleration of Light:Density of Space
- Radial Motion in Schwarzschild's Geometry
- If two trains traveling at 0.5c collide head on...
- Hawking radiation, BH entropy and so on in Kottler spacetime
- Theoretical question
- Do I have time dilation right?
- Accelerating trajectories in relativity
- Relativity Question
- Space time distortion grid representations
- If you were traveling in a spaceship that had a velocity JUST under light speed...
- 12 year old autistic savant claims theory of relavitiy is wrong
- How Do The Definition Of Inertial In Relativity Relate To General Mechanics
- Pioneer anomaly solved
- two black hole question
- gravity = warping of spacetime (doesn't make sense)
- Tensor algebra with derivative of the metric
- Happy April 1st
- Nullity of wave 4 - vector for grav. plane wave
- Twin paradox, what about ageing?
- Time elapsed for observer (from POV of Traveler)
- The Speed of Gravity
- Special Relativity and Enganglement
- simple relativity question [two ships]
- Backward Time Causation in Superluminality
- Tortoise-like coordinate transform for interior metric
- General relativity and jet travel makes you fat?!
- Parallel transport
- Visualising numerical solution to geodesics in some metric
- Relativity Theory TEST
- Relativistic Resistances
- Accelerating to the speed of light
- Simple relativistic harmonic oscillator
- Any good references of Petrov Classification?
- Help learning SR
- newtonian limit to schwarschild radial geodesic
- Time dilation problem
- Tensor questions
- Mach's principle and boundary cases
- Differentiating Tensors
- Why do need Gravitons?
- Spacetime doesn't really exist does it?
- Does this scenario disprove relativity?
- GR in all frames of reference
- Just wonder, why torsion is neglected in EFE?
- Does the frequency of light change as I travel toward it?
- Does the clock aboard a GPS ...
- Velocities - how relative are they really?
- Distances define geometry
- How can Block Holes form in finite time?
- Relativistic optics
- Manifold / Atlas / Chart (Building Simple Example)
- A dimensional problem in relativistic mechanics
- Time at Big Bang
- Is there any good reference of tetrad in GR
- Mathematical Skills for Understanding General and Special Relativity
- Hawking Radiation w/out black holes
- Wald: Ch. 2, Problem 8.b
- Time and Space Time
- General questions about relativistic derivations and deductions
- Are the forces of gravity subject to the Doppler effect?
- Can you turn a black hole inside out with charge?
- Einstein's June 30 1905 paper - help please with the maths
- Creating a black hole with any mass?
- Trying to understand what extremal proper time means.
- Singularities, Density, and the Planck Length
- The speed of light with an accelerating observer.
- Properties of curvature tensor in 3 dimensions?
- Question regarding light clocks and time dilation.
- Does a Blackhole form Simultaneously?
- Time and Light speed communication
- Question about time dilation in the schwarzchild metric?
- Experimantal verification of GR
- Tachyon - assymetry between space and time
- Twin Paradox (thorough explanation needed)
- Dokuchaev, "Is there life inside black holes?"
- Time Dilation Puts Two Observers at different Times?
- Falling into a black hole and then shining a light?
- Classical Field Theory without Force
- What would be the physical consequence of a non-metric connection?
- Metrics, +++- vs +++--
- [Novice] Why isn't Time Space?
- Contraction in the Riemann Tensor
- Gravitational self-energy
- ISV VentureStar (Avatar): acceleration problem
- Silly time dilation question
- [Novice] Infinite density.
- Stuck on kinetic energy.
- Equation for acceleration in MTW
- Rindler Observer
- Time Dilation
- speed of light not a legitamate factor in relation to mass
- A critique of Mike Fontenot's CADO scheme
- doubt about gravitational waves
- General Tensor contraction: Trace of Energy-Momentum Tensor (Einstein metric)
- Writer needs help
- CADO Cartoon ...
- Nonrenormalizability of GR
- Question About Inertial Frames
- Conservation of Energy Down The Drain?
- Solutions to Field Equations with Einstein Tensor = 1
- The Affine Connection components
- Geodesic Motion for the Gödel Space-time
- Falling into a black hole
- The End of the Universe in an Instant
- relativistic rotational kinetic energy
- size of observable universe in two simple cases -- this this right?
- When people talk about the current size of the observable universe...
- Maximum Occupation of Spacetime
- Distance between two points in spacetime
- Einstein's theory
- Finding Co-frames in GR
- Anti-Gravity from Matter-AntiMatter Repulsion
- Inflation and Gravity
- Contravariant metric components
- E=mc^2 and kinetic energy
- non minimal coupling
- Deriving the speed of light from the Pythagorean Theorem
- Equations of motion por a free particle in curved spacetime
- special theory of relativity
- Gravitational waves by analogy with Maxwell's equations
- Energy approximation for small velocity
- Relativity and the Heisenberg Ontology
- Q: if you travel closer to c, will you see length(distance) contraction
- if telescopes travels at 0.9999...c, we can seen things on andromeda almost realtime?
- Andromeda paradox is flawed!
- c^2 in Lorentz transformations and special relativity.
- Conservation of angular momentum in GR
- Where can I find "Survey of gravitational radiation theory" F.A.E PIRANI
- What If Lorentz Invariance Violation Were Detected?
- Deriving time dilation?
- Black Hole, Fact or Fiction
- Do you have to travel away from the observer for time to slow down?
- Thought Expirement, Tethered Spacecraft travelling near light speed
- Big bang in Robertson - Walker space - time
- relativity breakdown
- Space-time geometry in the absence of matter
- 5D Wormhole more efficient?
- Constant acceleration approach? =/
- how does blackhole event horizon grow?
- Twin paradox and jumping time
- Deflection angles of photons passing by black holes
- How to measure speed of light?
- Constancy of the speed of light.
- The Shape of the Universe, and General Relativity
- My paradox, dead or not according to different observers!!
- Straight Line Case. My paradox. Sorry if I rewrite and start a new post.
- Is (our) future already exists, according to relativity?
- Densities
- photon speed
- Anyone here play Portal? Portal + Relativity question
- Is Spacetime Curvature Real? - Take 2
- terminology for Doppler shifts
- Question about C and Relativity
- That famous equation - a better understanding
- Equations for length contraction
- Space?
- Derivitave of y=sin^-1(x)
- How innaccruate is GR?
- testability of torsion
- reg tensor algebra
- twin paradox
- A thought experiment for surpassing the speed of light
- Simultaneity of a human life
- Help with special relativity (frames of reference)
- Is Einsten saying
- Photon gas as medium for electromagnetic propagation
- (Supposedly) New theory of spacetime?
- basing everything on speed of light
- Electron falling in the Kerr metric
- Beam entering a black hole ?
- Photons and gravity ?
- Weak equivalence principle and GR
- Do photons experience "instant" lifetimes?
- ambiguity in time dilation due to relative velocity
- Why does the bend in space time not affect the gyroscope?
- Relativity books
- Can someone help me understand this paradox please
- How to denote tetrad in Abstract Index Notation ?
- Twin paradox
- Local coordinates for non-uniformly accelerated observer
- Adding two velocities
- Surprising CADO result ...
- Does frequency of light increase if
- Time and space are related?
- signature scheme by pythagoras theorem
- Bell's spaceship clarification
- MTW exercises discussion
- Does anyone ever do Newtonian physics with arbitrary time coordinates?
- Length Contraction and Time Dilation
- Diagonalization of metric matrix in general relativity
- Do all gravity waves have the same frequency?
- Quick question to clear up some confusion on Riemann tensor and contraction
- General Lorentzian Relativity
- Topology of flat spacetime
- Why does time dilation create a velocity barrier but not a density barrier?
- self-interactions in "linearized" gravity
- Stress tensor : tension VS Pressure
- trace-reverse field in linearized GR
- Lenght contraction of a charged wire and time dilation?
- Spacetime interval
- Question about the space-time fabric
- Gravity Probe B press conf. 4 May (any surprises? comment?)
- Am I interpreting Einstein correctly?
- Wave vector in curved space-time.
- Why GR is non-deterministic?
- Acceleration vs De-acceleration
- Metrics!
- Axiomatic approach to GR
- Graviton propagator
- Four-vectors
- QFT and FTL
- Would the effect of photon/quantum wrapping space time be negligible?
- The Metric
- Will GR ever explain the flyby anomaly?
- Relativity Thought Experiment
- Relative Speed and size
- Geodesic motion from the EFE
- Calculation of Speed
- Proper Time
- Determinism, Stokes' Theorem and Relativity
- Can you determine absolute motion?
- How can photon have frequency if its time is zero?
- Are the definitions of vectors in Liner Algebra and physics contradictory?
- What is the angular-momentum 4-vector?
- Is increase in mass relative?
- Confusion with proper time from different frame of references
- On the two body problem in GR
- Are acceleration and gravity completely equivalent?
- Twin Paradox revisited
- Principle of Equivalence Re-examined
- Time and Space Relativity
- Are the directions of charge flow (=current?) absolute?
- addition of velocities
- Gravity Paradox
- Rope Paradox
- Question about the Gravity Probe B Schiff equation
- Velocity of Light, for an Accelerating Observer
- Does the expanding universe contradict relativity?
- Conservation Laws vs a Spinning 'Disk Brake'
- Light emitting from an object moving near the speed of light.
- Apparent Paradox?
- time clock question
- Wikipedia: using the four-velocity to understand time dilation (?)
- Age of universe?
- Mathematical Operations of General Relativity
- Lorentz factor
- Derivation of Newton's Third Law (?)
- faster than light question
- Relativity of Simultaneity: A question about the train paradox
- Topology of Minkowski spacetime
- spacetime bending
- light momentum
- Does a charge gain energy in every frame when it is accelerated?
- Inertial reference frame
- Time Dragging
- Still faster than light?
- inertial vs accelerating frame
- question of age.
- Manifestly covariant
- Accelerating reference frames
- basic calculation
- Relativistic optics, w/ acceleration
- Equation Needs
- Is time and space moving through us? Do black holes rotation create time?
- time measurement
- stress-energy tensor in static cylindrical case
- Questions on Stress-Energy tensor
- Florida's streaming videos in GR.
- Gravitational Pseudotensor Requirements
- Speed of light
- Twin Paradox
- Gravity Acceleration through a Hole in Earth
- Acceleration and mass
- Help with equivalence principle please.
- Divergence theorem/ Surface integral
- Quadropole formalism
- object at the speed of light
- absolute parallelism in teleparallel gravity
- Coordinate matters
- Gravitational time dilation implies energy change?
- Help Understanding Lorentz Factor
- Electromagnetic Interference in Einestien Field Equation
- how General theory irons out the paradox of newtonian physiaboucs about space travel?
- The set of allowed trajectories in spacetime
- Lorentz Transformation Applicability Re: EM & Casuality
- notation for basis of tangent space of manifold
- Question on the reasoning behind the light clock thought experiment.
- Equivalence Principle: Are there any restrictions
- interpretation of Einstein's E=mc2 paper
- universality of Doppler shift for energy of any massless field
- Covariant VS manifestly covariant
- Conservation of rest mass
- Albert Einstein's theory of gravity is generally explained in a wrong way
- Can I express "stationary spacetime" and "static spacetime" in this way?
- What are valid Preferred Frames?
- Measurement Problem in Einstein's Relativity
- Force? Curvature?
- speed of light is constant because of doppler effect?
- Black Hole thought experiment
- Time Dilation - Is this a paradox?
- What happens when you go near the speed of light and there's stuff in the way?
- Stupid question
- How does gravity travel through wormholes?
- A or B series of time?
- Complex metric solutions in GR
- Energy of a point particle in curved space time
- charge and the Equivalence Principle
- How is Weyl Tensor associated with tidal force ?
- Any Others?
- gravitational waves
- Does spaghettification occur around a super massive black hole?
- I am a bit confused at "orthonormal tetrad" in General Relativity...
- A derivation problem on Newman-Penrose Formalism and Dual Forms
- Light-years, but for whom?
- why is there gravity at a distance?
- Whoosh - linear frame dragging papers?
- Historical origin of energy momentum equation?
- antimatter black hole
- How to obtain the transformation of Null Tetrad ?
- Canonical derivation of Landau-Lifshitz pseudotensor
- arbitrary rescaling of rapidity; work-KE theorem in SR
- Physical laws and tensor formulations of them
- E=mc^2 proof. Why use Newtonian kinetic energy???
- Did Lorentz or Einstein theoretically derive special relativity?
- Silly question about (Galilei) transformations
- Simultaneous Causation
- Transformation confusion ?
- Velocity of particle waves in an object?
- Acceleration and quantum gravity
- time
- proper lorentz transformations
- Schwarzschild radius question.
- How can anything cross the event horizon of a BH?
- How do you calculate the speed of a particle given its Total and Kinetic energy?
- relativistic force
- Time Sync Problems
- Self similiarity
- How do find out gravitational pull according to GR?
- Question about the speed of light and relativity
- Controlled experiment with time.
- Derivation of Lorentz invariant
- Why is the relativistic mass a rejected concept?
- Is mass conserved by mathematical identity?
- On "why massless particles move at the speed of light"
- Levi-Civita and Jacobi
- Tidal forces near a black hole
- minimal coupling non minimal coupling
- Does the shape of the Universe contribute to the gravitational path?
- Why does gravity have to be non-linear?
- energy stress tensor
- Question about the Lorentz Transformation
- Newton's Bucket Revisited?
- twin paradox alone kills special relativity
- Question about the bending of light
- how to find flux through a black hole
- Simultaneity & a Temporal GPS
- Determining who measures Proper Time and Length
- Special theory of relativity question
- Difference Between Newton and Einstein
- Speed of light question
- Einstein and the Ether
- Physical definition of inertial reference frames
- Question relating to the Ehrenfest Paradox
- Does gravity affect gravity?
- Train experiment in special relativity: a problem?
- Space time reversal inside a black hole
- Removing extraneous factors in Einstein Action
- Non inertial frame: Speed of light
- General Lorentz Boost
- Lorentz transformation Limit
- How could "strange shapes" affect space-time?
- Your photonic rocket reaches planet A, 10 light-years away in 10 years.
- The Schwarzschild (Exterior) Solution
- Approximate Space Physics for Online Game
- question about speed of light
- Einstein field equations
- significance of gauge transformation...any experts?
- Nested Lorentz contractions
- Lorentz factor and Bondi factor
- Einstein's Field equations & quaternions / octonions
- General confusion with four velocity and four acceleration
- Does size increase or decrease as mass approaches c?
- Clocks and curivture
- space matter
- stress energy tensor for a swarm of particles ( in MTW )
- Simultaneity question – is sequence absolute?
- question about energy in C-O-M frame and Lab frame.
- Light Clock Experiment - questions from a newbie?
- variation of cosmological constant with time
- Issues entering a spacetime in GRTensor II
- Schwarzschild Metric - Need help understanding
- Time dilation and twins paradox
- Unique acceleration in gravitational fields
- Confusion with lower/raising indices
- Parallel velocity hydrogen/antihydrogen annihilation at relativistic speeds.
- Can time dialation really just be the slowdown of physical processes?
- No real purpose in space-time?
- Black Holes and grvity
- Age divergence of Identical accelerating twins
- Curvature of space/time question/problem
- Twin Paradox - relativity
- Do tidal forces mean the Equivalence Principle is BS?
- what is a graviton?
- is the speed of light a paradox?
- Correct Expression for the Weyl Tesnor
- Speed of light - why is it a constant?
- Magnetic field from Van De Graff
- Blackhole mass = Hawking temperature x Entropy?
- light bent in gravitational field..
- Penrose-Terrell rotation and the 3 great special relativistic myths
- What is Expanding Horizon of a black hole?
- Matter to energy
- Equivalence priciple, light bend
- special relativity/speed of light
- Does GR contradict Mach's principle?
- Higgs field at the event horizon
- Did David Hilbert beat Einstein to Relativity?
- More Stuff
- Lorentz transformed pressure for a rod with two masses at its ends
- In General Relativity, what would happen to the Earth the Sun disappeared?
- Rotation tensor and absolute time
- Solid angle , never seen derivative !
- A crazy thought
- Mass energy equivalence
- Gravitation radiation question
- FRW symmetry
- Not sure about this coordinate definition
- Schwarzschild radius and curvature
- Conservation Law in curved spacetime
- Electric field in curved spacetime
- Relativity Explained Via Movement, Not "Time"
- What effect does the expanding universe have on spacetime?
- Why (-,+,+,+) and not (+,+,+,+)?
- Speed of light.
- Inertial frame dependent on mass?
- Pros and cons of Palatini Formalism?
- Lorent's time transformation Feynman 15-6 simultaneity
- Possible non-existence of black holes and consequences
- Godel's metric in cylindrical coordinates
- A virtual pole vaulter in the relativistic barn
- Time-Dependent Lagrangians
- time
- Gravitational time dilation on cylinderical objects
- gravitational field
- Gravitons vs Attraction Due to Curvature of Spacetime
- proportionality of time to motion
- Light Bending: Comparison of Theories
- Turnkey black hole scattering software?
- calculational details of Hawking radiation
- Electric field of charged black hole.
- time dilation and death
- Faster than light time travel
- Mass distribution of a black hole?
- Covariant and Contravariant Tensors
- Gravity's Effect on Time
- Schutz 4.5, p. 100: A differential equation
- Are photons timeless?
- Finkelstein's "unidirectional membrane" paper
- Magnetism & relativity
- GTR paradox
- Permeability of space
- Backround independence and the definition of distance
- Lorentz Transformations in general
- SR pedagogy: energy-momentum and area in the x-t plane
- Lorentz ether frame, Relativistic Mass, and Inertia
- Special Relativity and direction of travel
- Energy change of a photon when it bounces between two mirrors
- Length Contraction of the Universe Surpassing Length of Moving Object?
- Would gravitational time dilation prevent Singularity in a black hole?
- Please suggest some material for quick review of general relativity.
- Effects of Gravity and velocity on Time
- divergence of einstein tensor
- Photon at rest
- Curved Space-Time
- Unified Field Theory
- Event horizon radius
- static circular twin paradox
- Rope Going Off Hook Paradox
- How Is The Relativity Of Simultaneity Consistent With Physics And Relativity
- Time dilation plus constancy of light implies space is dilated?
- Why we do not attribute the gravitation for force but for distortion of spacetime?
- forces and reference frames
- maximum attainable speed.
- General Relativity math, Tangent vectors on manifolds
- what is the difference between special and general theory ?
- Simplest force
- Conservation Law
- what is mass
- Questions about light speed, time, and dimensions.
- Killing vectors in KS coordinates
- PC cpu limitation ruining our movie promise
- Fluid element, conceptual questions
- If already known the Action and unkown the Metric, how to get geodesic equation?
- The Cosmological (constant)
- question about Black Holes (simple question)
- What equations are affected by Lorentz Transformations
- Symbolic manipulation program required
- Force Law Transformations
- Lorentz Contraction Physical Reality
- The dimension of fields
- Space-Time Dilemma
- Length contraction
- Hermitian Metric - Calculating Christoffel Symbols
- Scenario where time dilation seems to be paradoxal
- Falling into a super massive blackhold
- What tests have been done to confirm the speed of gravity?
- Gravitational behaviour of antimatter
- Relative Mass Gravity
- Space-time at the speed of light
- Calculating the speed of the earth
- question on Frame Dragging
- Problems with a complex stress-energy tensor
- Is body to body gravity scale independent?
- The Speed of Light, Gravity, and Why it all is what it is.
- Do photons exert gravity?
- Where did the gravity come from?
- maxwell's equations and relativity
- Gravity - Force or Effect?
- Rotation of coordinate system in minkowsky spacetime
- If time slows down as velocity approaches C...
- Do gravity waves exist?
- Is the polarization of light relative?
- 99% The Speed of Light!?!?
- Self-Torques???
- mass in special relativity
- Non singular black hole solutions
- Simultaneous Polynomials
- Mechanism for Alcubierre engine?
- Light - What exactly is happening?
- Does Time Exist?
- Basic questions on time dilation (probably already answered, sorry)
- proton falling into a Black hole?
- Relativistic effects on a body rotating at near c
- Easy question on proper time
- Raychaudhuri equetion
- Relativistic problem...?
- Help...
- Lagrangian for black hole
- Superluminal speed............
- Why Does Redshift Occur?; Other Factors That Cause Elongation Of Wavelength?
- How exactly does mass curve space?
- Absolute speed of light
- Black Hole Rotation Speed
- Relativistic Ohms law
- Nature of Gravity Discussion
- Are black holes theoretical or real?
- How can we test space-time for pseudo-Riemannian-ness?
- Thought-Experiment with illustration - help me understand...
- Einsteins General Relativity
- Relativity and Probability Waves
- Mercury's Precession
- Interesting energy problem
- why can light travel at the speed c?
- Relativity stands
- Cosmological Light
- E=mc2 How did Einstein get to this equation?
- Relativity question.
- Radial tidal forces and tidal forces on moving objects redux
- humans travelling at light speed?????
- Variable speed of light
- gravitational waves predicted by Einstein
- So if space/time is a "plain"...
- Kinetic Energy approximation both Einstein's and Newton's
- Simple relativity problem. Help needed.
- Lagrangian for the propagation of light in spacetime?
- space time
- Flywheels and gravity in GR
- Lorentz covaraince of differntial operator
- Alcubierre Drive vs the Hubble Constant
- Lorentz transformation for non-inertial frame
- What is Einstein Notation for Curl and Divergence?
- defining the dimension of a singularity?
- Black Hole matter
- The fastest you can age?
- Does causality principle still have meaning when space-time dissapear(before BigBang)
- Does increasing velocity shrink matter?
- Lagrangian for the General Relativity
- Doppler Effect and Space-time
- Global GR theorems without energy conditions?
- Proof: Velocity of Light can't depend on velocity of body emitting the light
- Firing a bullet from a gun in a gravity well.
- A problem with time dilation help!?
- 2 protons have less mass than combined
- Closed timelike curves
- Thought experiment on the nature of light
- Penrose diagrams, reference request.
- What is the Stress-Energy Tensor
- Gravitational effects on particles orbit in a box
- Can you create a black hole from light? Also, Whiteholes vs. Blackholes
- Reaching C
- The gauge of general Relativity
- The Spaceship experiment: Questions on Light's Inertia and Measuring Distance
- Moving Clocks Run Slow?
- Geometric shape of Minkowski space
- Black hole surface gravity question
- first historical experiment disproving Ritz emission theory?
- Sundial and Relativity
- Can calculus find the momentum of light?
- object size
- Time and physicality of dimensions
- Falling Light under gravity
- Are angles relative?
- Time dilation/ light speed-thought experiments
- When is something covariant or contravariant?
- Mass of potential energy
- how is twin paradox resolved in case of no/zero acceleration?
- Speed of light hypothetical question
- Planetary Orbits calculated from the Metric
- SR/GR FAQ requests
- Spinning disk contraction
- Fermi-Walker transport
- Two expression for relativistic acceleration
- Is this GR explanation legit?
- Describing Time to a Philsopher
- Lorentz Transformation on a Wave Function
- Basis for time travel
- Speed of Sound, Light, and... Time?
- Is relativistic momentum conserved?
- speed difference
- Wrong Time Dilation
- Why can't there be a center of relativistic mass?
- Why is the Time component in the Space Time Interval negative????
- Parallel transport of a vector.
- Force on a massless classical particle
- Instantaneous Communication Between 2 Stationary Observers
- The difference between big delta and small delta?
- parallel transport on sphere
- Gravitational time dilation
- Time dilation question.
- rest mass and apparent mass
- You have a solid bar that is
- SR Photon target
- plausibility arguments for noninteraction of parallel beams of light
- Don't fully get Lorentz equations
- Energy-momentum of non-free classical particle
- can't make a clock out of light
- A question about the relationship between light and time.
- Own Grandfather
- Local gravity calculation
- empirical verification of conditions for Hawking singularity theorem when Λ≠0?
- Question for the Dr. Who fans... (or anyone really)
- action at a distance v curvative of space
- Momentum of "massive" classical free field
- Does Mach's Principle Work Both Ways?
- Writing Sci-fiction Graphic Novel need advisement in "space travel"
- Negative Metric Signature
- de Broglie wavelength shift in gravitational fields
- Is the speed of expansion of the universe faster than light?
- A photon's time
- Striving Speed of Light?
- Mass of trapped photons vs. Mass of potential energy
- Help with energy momentum relation.
- Homothetic Vector Fields
- entropy as a measure of time in relativity
- Wormholes & Conservation of Energy
- Origins of the idea of a tachyon? (and a greeting)
- Wormhole
- Connecting Two endpoints in space using a Wormhole.
- Is it possible to post diagrams multiple times? (move if needed)
- Equivalence classes
- Alice and Bob on the Tracks
- Question on Time Dilation Experiment
- Gradient of a tensor in cylindrical coordinates
- Mach's principle
- Question about time dilation
- charge in a black hole.
- Elementary questions about connections.
- Where is potential energy in relativistic formula of energy?
- Questions on Relativity
- Gravitational Time Dilation - Is my head older than my feet?
- Question of acceleration
- Speed of Gravity the Same in All Reference Frames?
- External view of a black hole
- Relativistic Momentum Remains a Vector When in the context of Relativistic Energy?
- In <Cosmology> written by Weinberg, in page 109
- Confusion about time dilation
- Are there any similarities between GR tensorial
- trying to understand spacetime curvature
- postulate of SR re speed of light
- worldline's arc-length
- Laypersons problems understanding Black Holes
- Help me reconcile this
- Red/ blue shift do to gravity
- covariant derivative
- Length contraction
- range of time
- Need help resolving this paradox with time dilation
- speed of light in non inertial frames
- Why is the time dimension different from the 3 space dimensions
- Question about time in Lorentz Tranformation
- Relativity and light
- How is the space distorted?
- Are there 2 kinds of Time?
- How can I access to the following reference?
- Can Equivalence Principle Be Violated?
- Time Dilation Concept Confusion
- Escaping the Schwarzchild Radius
- Is the speed of light constant
- confusion regarding Time dilation please help?
- Relativistic Currents
- Does there being a speed limit imply that all observers view object at speed limit?
- Our 'Background' Speed and How it Fits with Time Dilation
- Frame dragging = CTC?
- Wanting to understand the one-way speed of light problem in more detail please
- Why does action have to be invariant?
- Interchangeability of time and space
- Is Center-of-Mass Supraliminal?
- Conservation of energy in gravitational red shift
- Issues with predicting Mercury's Orbit
- Interaction between charges in motion
- hydrogen atom to 90% the speed of light
- GR and energy conservation
- Question about Relativity of simultaneity and light clocks
- Open and Closed Models in Cosmology
- Re: Spacetime curvature
- The General Relativity Metric and Flat Spacetime
- Question on time measured
- Torsion in GR and Einstein-Cartan theory
- bacteria space travel !!
- what if a black hole had a negative size ?
- Inelastic collision problem/ unequal masses.
- *May be a stupid question* Does Oxygen/Nitrogen bend space-time?
- Who’s spin in the Einstein-Cartan theory? Source’s or test particle's?
- Is there a phase space in GR?
- Moving at c
- twin paradox
- CONCERN about relativity, need a quick answer!
- covariant derivative of riemann tensor
- Question from the FAQ on Rest Frame of a Photon
- Transformation of the Line-Element
- Composition of 2 Boosts in Special Relativity
- mass-energy equivalence
- Confusion
- What is a "Space Structure" in relativity?
- The Curvature of Space and Acceleration Confusion
- question about equivalence principle
- Lorentz transformations formulas
- light speed barrier / closing speed
- Rest Frames and Photons and c
- accelerating to speed of light
- the C is the speed of photon ( light ) ?
- a problem in general relativity
- The how's and why's of SR
- Invariance of interval in SR
- Length and Distance Contraction
- If co-moving with a photon
- Why is speed of light 299 792 458 m / s
- magnetism to test for movement?
- Newbie question -- Conceptualization of time dilation from matter's perspective
- Cygnus X-1 is nearly extremal.
- Inquiry about kinetic force in STR
- Singularity and our reality
- covariant derivative of stress-energy tensor
- Logarithmic spiral photon orbits
- Charged Particle and Gravity
- advances in michelson morley interferometer
- What does added mass mean for a spaceship travelling at the speed of light?
- Negative time
- what would the universe be like if c were not uniform
- Quantum current density in general relativity
- What is a Poincare group?
- Problem in Special Relativity
- Lateral momentum of light
- Not Understanding Time Dilation.
- Terrell Revisited: "The Invisibility of the Lorentz Contraction"
- deriving GR from maximum power
- Spinning Massive Sphere
- Why is the light clock accurate?
- Yet another one on the twin paradox/proper acceleration
- Two balls in space
- Lorentz Transformation Derivation
- Help resolving absolute motion paradox please.
- Possibly simplistic question about massive moving objects
- Boost in General Relativity.
- Relative motion and B fields.
- Not Understanding Time Dilation - mk 2.
- Completely General Lorentz Transformation
- Bullet-hole "paradox"
- Is time dilated if gravity is pulling equally in all diections?
- Parallel Projection of 3-space unto a plane at c.
- Backreaction of accelerated motion on spacetime curvature
- More thoughts on the twin paradox. One persons view has to be an illusion?
- Energy-momentum of gravitational waves
- Basic questions - k calculus.
- Planck constant is Lorentz invariant?
- Help me to kill my paradox
- Two different velocity variables in relativistic momentum?
- Lorentz contraction in other dimensions?
- "Michelson-Morley" experiment(s)
- 5D Space,Higher Dimensions etc.
- Sketched solution
- Violation of causality
- How does E=mc^2 ??
- Help with Relativistic Collision
- Relativistic Momentum Help With Equation Reduction
- Gravitation and Space Time warps
- Pushing a stick into the moon
- Whether the speed of alternative/direct current is faster than light???
- manipulating space time
- Relativity Video Check
- Derivation of Relativistic Momentum WITHOUT using Relativistic Mass???
- Time travel by going fast in a spaceship: questions
- Twin "Paradox" with no asymmetry
- School me on gravity waves...
- Concerning the importance of preffered time coordinates
- Einstein's tensor divergence
- Absolute force
- Rocket-man measuring speed of light...
- Einstein's Train and Lightning Bolt Simultaneity Situation
- Tensor transforming law problem / metric-delta contraction
- lorentz factor
- Wormholes - A way to violate energy conservation?
- Camera near the speed of light
- relative velocity
- Question about GR
- Relativistic Momentum Derivation Help
- Covariant and Contravariant Kronecker Delta operating on Tensor
- I forgot what this is called and what is is written out.
- Question about static spacetime
- difficulty in learning tensors
- Deriving the Schwarzschild Metric
- When the Schwarzschild radius is inside the star
- Fundamental question on GR: Basis vector meaning
- Deriving EFE from the Bianchi Identities
- How do I calculate time dilation due to acceleration in SR please?
- Large rotating disk.
- Belt Paradox?
- still learning about tensors ...
- Mass to energy conversion at fraction of speed of light
- General Relativity at the microscopic level
- Speed of muon
- Definition of Space
- Starting GR
- Vaidya/Lemaitre-Tolman metrics
- Superposing two metrics
- The shape of space-time around a star
- Time-like Intervals and Causality
- Einstein simultaneity train thought
- Energy Density from Metric
- Time traveling Light?
- Cuurent statuses of theories of gravity
- causes that led to discovery of GR
- Einstein gauss bonnet gravity
- Time dilation, mirror question
- A Machine...
- what means tha GB is a total derivative??
- Question about simple linear accelerator
- space, time and events
- temperature within the epicenter of a Black hole.
- Does a gravitating body have to undergo gravitational collapse?
- Geometry and long space travel
- Newbie question: Long trips and observed time
- Newb question
- Black holes in tetrad formalism
- Effect of Gravity get bent like light around another gravitational source
- Static gravity as a two form
- Thomas Precession
- Does GR remain in a universe without matter?
- how do black holes merge when the singularity infinite density slows time to no time
- Really confused - basic special relativity
- Some exercises on relativistic doppler shift?
- Rotational Killling vectors
- Why don't gravitational waves get distorted?
- Is the current black hole horizon observable?
- Definition of local inertial frame
- Gravity: why, how and ehhh?
- TIME DILATION. WHY do clocks that are
- A Bus travelling at a very high speed.
- Electron spin after travel in gravitational field
- total gravity of all mass and energy in Universe.
- Simultaneity and Spacelike Interval!
- Time Dilation Problem!
- question about approaching light speed of a rotating object
- General Relativity vs Geometrodynamics
- The three vectors in the Null Geodesic equation
- Covariant global constants of motion in GR?
- high velocity
- Precession of the LRL Vector in SR
- Twin Paradox Question
- relativistic energy
- Gravity Probe B / precession question
- Doubt about relativity!!
- inner product in schwarzchild metric
- Does simulataneity contradicts the constancy of speed of light
- Old experiments with superluminal speed
- Question regarding photons and mass
- lenght contraction
- How far does space-time bend out in space?
- Question about the rotating disk
- Why time is relative.
- black hole
- c
- what is the path of earth in 4-d space??
- Einstein equation's RHS sign
- comprehensive list of cosmological models and their properties?
- Progress on detection of gravitational waves?
- Faster than light and time travel
- light speed
- Does expanding space affect time dilation etc?
- accelerating spaceship paradox
- Gravitational waves
- Spacetime curvature and the force pulling an object "down" the curvature
- Why can we use metric tensors to lower index of Christoffel symbol
- Worldline congruence and general covariance
- Hafele and Keating, local gravity field as preferred frame?
- Gravitational redshift, energy and the EP
- lovelock gravity
- How it begins?
- free fall and gravity
- Susskind Lecture - accelerate reference frames
- Speed of light for different observers
- Time Dilation Question
- Lijun Wang faster than light expierament
- Relative Mass vs Gravity
- Slightly confused about embedding picture and imagining spacetime
- Question on Michelson Morley experiment and length contraction
- Two identical black holes, but rotating in opposite directions collide
- Clarification on mass-energy tensor and 4-velocity.
- How emission theory was disproved by de sitter binary star experiment?
- Visualizing Minkowski geometry
- Divide in space and time component
- Question on submanifolds of a semi-riemannian manifold
- One Way Speed Of Light
- Regarding constancy of speed of light
- Relations between kinetic energy, momentum and velocity
- Independent components of the curvature tenso
- Using cadabra to calculate antisymmetric tensor field
- 4-D Location of Observers
- Phase Velocity
- Spaceship Chase Scene
- Einstein's mirror
- Is curved space allowed to show discontinuities (steps)?
- Fun with magnets, mass and folded space matrix.
- Geodesic expansion in Mathematica
- Black hole falling time for external observer
- Twin paradox, new version
- What does it means to say two events are simultaneously observed?
- What exactly is compressed at very fast speeds?
- BH fall time = pi*m. What is external time?
- time/electromagntec spectrum and causality
- Relativistic Mass vs. Invariant Mass.
- General Relativity Gravitation Calculations
- Contraction of the Riemann Tensor with the Weak Field Metric
- journal of cosmology and gravitation
- about confusion of lenght contraction, and possiblity of length expansion...
- Time travel
- Length contraction and the expansion of the universe.
- Self-learning special relativity
- Mass of a moving object.
- Relativistic mass of falling body
- Quick tensor question
- Resultant Gamma after Einstein velocity addition
- I'm wondering why the value that converts mass to energy happens to be lightspeed
- MTW 25.29 v.s. 25.38 (first formula)
- Is Gravity a force or the chape of spacetime?
- Notation Convention: Primes in Coordinate Transformations
- CERN team claims measurement of neutrino speed >c
- Eotvos and Dicke experiment
- Effect of gravity on time dilation.
- Background required for general relativity
- Relativistic momentum
- Why does time slow down as you approach C?
- Combining time dilation and length contraction
- what can the rest frame of a neutrino possibly mean?
- Does an accelerated particle emit gravitational waves?
- I am sitting on my chair, am I accelerating for General Relativity?
- Faster than light and time travel into the past.
- If CERN's claim is true, how would SR and GR change?
- derivative of a function of a lorentz scalar
- Project ideas for modern physics class
- Time with no gravitational force
- Variation of the auxiliary worldsheet metric
- Are laws of nature really the same in all reference frames?
- Minkowski diagram - the angle between axes
- Speed of light puzzle
- flash of light thought experiment, need explanation
- if a neutrino has a non-zero mass...
- Just a quick question on the derivation of energy
- OPERA neutrino arrivals analysis
- Time dilation and length contraction in hyperbolically-curved spacetime
- Is time reversal logically consistent?
- If two spaceships are moving toward each other at the 0,9c
- Acceleration measured in another inertial frame?
- SR/LET Thought Experiment Help - Three clocks problem
- How do Maxwell's equations indicate that the speed of light is constant?
- Quick question about lorentz transforms
- Basic derivation of Lorentz Transformation
- What is the bare Minimum Lagrangian\Hamiltonian mechanics
- speed of light last value accepted 1983
- Simultaneity
- relative increase in fuel mass
- question about Hawking radiation in BH
- Is Special theory of relativity only about speed of light?
- Einstein's Length Contraction... A problem?!
- Life "c" and the pursuit of an accurate distance measurement
- Inertia - Why?
- Towards a Generic Integral for Tau in Schwarzschild Radial Motion
- Black hole light pulses
- Value of energy-momentum tensor in weak field approximations
- How did Einstein get to the fact that mass slows time?
- Michelson-Morley experiment
- How does Ricci curvature represent "volume deficit"?
- Speed of light and time travel
- Why do some think faster than c= time travel?
- E=MC^2 question about the "M"
- Question about time
- What faster than light have to do with cause and effect paradox ?
- Disapproval of relativity?
- Time-like intervals
- Time Dilation Earth orbit
- Testing a Relativity Simulator
- Gravity affecting gravity?
- 2 Events, Velocity Creates Simultaneity
- In what way do we still not understand gravity?
- non-linear length contraction
- Confusion with Lorentz boost
- Rigid body movement
- do photons have mass?
- Theory of relativity challenged
- Light Clock Example this is not HW
- Ok can some one explain me what it mean that laser spot can move faster the light.
- One more (possibly dumb) question.
- Thoughts on electrically charged black holes...
- Is gravity a gauge theory?
- What relativity really looks like
- What do I see wrong here ? T2 = T1 . (1 - V/C)
- Is EVERYTHING affected by gravity?
- Value of a measuring rod in an expanding universe?
- Covariant Derivative
- is gravity fictitious
- two lightnings that happen at the same time, a train and a passanger
- Is there a smallest unit of gravity?
- Besides Diff Geom and PDE, what are the most relevant math courses to Gen Relativity?
- Why do mass, time and length change at a rate determined by Gamma?
- Is Lorentz factor reality true according to the laws of physics??
- Relatively massive object moving at relativistic velocity passes close to the earth,
- Special Relativity breaks down in matter???
- 2 objects travailing in opposite directions?
- What is time?
- What are the effects of Gravitomagnetism?
- Relative motion - disagreement at very low speeds
- Why does time depend on light?
- a mind experiment about speed and time
- e=mc^2
- c=1 meaning
- Did I understand this correctly - time slowes down due to acceleration?
- Why does length contraction happen only in the direction of motion?
- Spacetime expanding within galaxies?
- Conservation of Momentum puzzle
- Constant Curvature
- Aging and time dilation
- The crossing of two light waves, a point standing still ?
- Relativity and elementary physics
- Comparative speed of moving vs unmoving
- Special Relativity basic concepts confusion
- Conservation of four momentum
- diffeomorphisms to poincare
- Is this valid?
- Time dilation in a non-inertial reference frame
- Red/blue shift in classic train/platfom thought experiment?
- Why is light speed constant in all reference frames?
- Gravitational Acceleration
- How can a metric connection have torsion?
- A Photons relativistic mass
- simultaneity is directional while time dilation is not?
- Schwarzschild Metric - Rindler coordinates
- Someone moving near c to an observer?
- Do the GEM equations embody the equivalence principle?
- Doubts of a 13 years old boy about simultaneity, time dilation, spacetime behavior...
- Radius of Ring Singularity in Kerr Black Hole
- GR analog to F=ma
- Spherical Mass Shell - What Actually Happens?
- Absolute Space and Moving Co-ordinates.
- Oppenheimer Snyder Collapse - finite time?
- Divergence of Energy-momentum Tensor
- My understanding of Space, Time and "spacetime"
- Length Contraction
- The relationship between light, energy and relativity
- Vacuum and non-vacuum regions, dust and fluids
- Einstein's field equations
- Need quick answer on spatial dimensions
- Momentum at the speed of light
- A thought experiment with theory of relativity.
- Earth's orbit and relative speed/time
- M.Sc Project topic sugestion
- How does GR handle metric transition for a spherical mass shell?
- in the back of the popular Relativity book..
- local inertial frames
- gravitational degrees of freedom
- The theory of Cosmological Relativity by Dr. Moshe Carmeli.
- Abraham's light momentum breaks special relativity?
- Global observations from Rindler frame
- Q: A&B moving in opposite directions @ 0.6 c comparison with sound.
- Derivation of expansion scalar for FRW spacetime -- weird observation
- Time dilation thought experiment clarification
- Mass is Energy Moving Faster then Light?
- beginner question about special relativity
- time-space in a photon?
- How would one answer a question Combining SR and the Broglie Wavelength equations?
- Equations or reality....
- E=mc^2
- What is it that sets the speed limit of light?
- Center of mass of a system of two photons
- Help understanding a SR equation!
- What do I do with these christoffel symbols?!
- time/speed relation on earth
- lorentzian metrics w/ timelike closed curves on cylinder that is a 2-manifold
- Confusion over Einstien summation convention and metric tensors.
- Speed of Light and Relativity of simultaneity!
- Distance light travels in a relatively moving frame?
- energy of photon never becomes zero
- How did Einstein Define Time
- If energy/matter deforms spacetime in three dimensions....
- Can the change in energy change the mass?
- spacetime elasticity
- Alternative way to calculate the special relativistic time dilation factor
- Gravity's effects
- Michelson-Morley experiment, a pointless exercise when taking SR into account...?
- Conservation of momentum question
- Is it possible to communicate through an Einstein-Rosen bridge without violating caus
- Newton's 3rd Law
- A Stupid question
- GPS and relativity
- A few questions about Relativity, Light, and Physics that dont seem to make any sense
- time dilation and relative velocity
- I have a crude understanding of dark energy and the relativist universe.
- Cosmological constant - attractive/repulsive character
- Please Explain this problem
- Questions about photons. Their interaction with time and their life-cycle.
- boosting four-acceleration
- potential energy contributes more to gravity
- Real life examples of simultaneity
- Quick Time Dilation Question
- Fourier transform in Minkowski space
- Can Neutrinos Travel Faster thyan Light?
- Symmetry assumption in derivation of SR
- Lorentz Transformations and Photon Delay
- Trace of SEM tensor
- Two electrons and... a paradox?
- The Lorentz Transformations and a Few Concerns
- Speed of Lightning
- Thought Experiment
- Detecting if you are moving ?
- What is the relativistic cause of planetary orbital rotation.
- Canal ray Doppler shifts
- e=mc2
- A question regarding Special Relativity.
- acceleration vs timetravel
- replication
- Mass-less particles? How can that be?
- Why doesn't light get absorbed?
- The physics of black holes
- Could GPS satellites be used to detect gravitational waves?
- Incompleteness
- action and lagrangian for massive particles moving in gravitational field
- Perturbative Construction of General Relativity
- Twin paradox: who decided who is the younger one
- Metric component confusion
- What is the need for KK-theories (and similar)
- accelerated observors in flat space
- Speed of light measurements using different light source.
- Which principle would be violated?
- the idea of anything crossing the event horizon of a black hole from any observer's v
- I don't understnad how to get the 4-volume element for a Minkowksi space..
- Einstein Field equations for dummies
- Spinning Mass & Spatial distortion
- Spinning mass & spatial distortion
- How does SR apply to rotating bodies?
- Time Dilation and Length Contraction near the Event Horizon of a BH
- On the Reissner-Nordstrom Metric
- Time Dilation
- Family of nested spheres in Schwarzschild spacetime
- questioning speed of light and infinite mass
- Dirac delta function transformation property
- Geometric representation of two-forms.
- Is this a legitimate derivation of the changing of mass?
- problem Landau relativity special
- Gravity re Newton & Einstein
- Coordinate change to remove asymptotic geodesic?
- Do Einstein's Field Equations Show Up Anywhere Else?
- Question about viewpoints in relativity
- Inertial frame of reference of light speed (And beyond)
- Is there really an absolute reference frame??
- gamma5 x d^2 Lorentz invariant?
- What energy term determines gravity in GR?
- Momentarily Comoving Reference Frame
- Reflecting light seen by two moving persons, explanation already known?
- Thought Experiment on the speed of light
- Finding Equations of Motion from the Stress Energy Tensor
- What does it mean to move through time?
- "Breaking Light"
- cosmologist observation the speed of light is not a constant depending on region...
- Change without time
- Wgat would a "light clock" measure in free fall?
- A case of what distance
- Time dilation
- Problem with tensors
- How to explain time dilation easily to others, maybe like this ... ?
- mass increase
- space time curvature caused by fast electron
- Curved-spacetime, but why curved coordinates?
- Question about FTL travel vs. FTL acceleration
- visual effects of SR versus GR
- Needing a basic clarification with SR
- Tensors, getting to know them
- Time dilations: How do we actually see things?
- Can special relativity result in alternative realities?
- Is my intuition correct?
- Varying Gravitational Field - Invariant Tetrahedron??
- Michelson-Morley experiment doubts
- Why are photons massless?
- is this statment true ?
- Downloading e-books makes Kindle heavier??
- Table of Connection Coefficients
- Could time as a dimension have property that would behave like energy ?
- formula of doppler effect for sound,relativistic?
- Good resources for integrals in Four-Space?
- Is SR and GR Time Dilation the same thing?
- Special relativity under the inflation of spacetime
- why can we explain gravity geometrically but not EM force?
- cosmological horizon still is at the big bang
- Relation between affine parameters
- A kind of Tensor notation?
- speed of light and time dilation
- Is general relativity generally covariant?
- Einstein's original 'thought experiment'
- The unit vector normal to the curvature of spacetime
- A spinning singularity?
- Elegant Universe: Example of motion's effect on space
- Pondering basis vectors and one forms
- Question about Brian Greene's wormhole illustration in "Fabirc of the Cosmos"
- The zeroth component of the four-momentum
- Gravity
- Solutions to the space-time metric
- Objects colliding at c
- speed limit
- Lorentz invariants
- Silly doubt on relativity
- Speed of gravity modification
- Impossible scenario?!?
- First integral of Lagrangian
- Deriving time dialation?
- Going back in space vs Going back in time
- Reaching the Rindler horizon in a finite proper time
- Gravitational Time Dilation and Contradicting Physical Events
- energy degradation of light
- time dilatation and 'now slices'
- No Such Thing as the Plank Length?
- relativistic doppler effect - inconsistency in my derivations
- Rest frame relative to CMB
- Symmetry in special relativity
- A query regarding Ether wind
- Is SOL infinite? (from its own point of view)
- Triplet paradox: where's the error in my logic?
- Illusion of Time: Is the Future Already Written?
- Relative mass and velocity
- Different values for the inertia of a moving object?
- Absoluteness of acceleration
- Acceleration thought experiment
- Different "Slices of Now" Observable from Earth?
- Twin Paradox Explanation Needed
- Why so many definitions of an inertial frame?
- Black holes and time dilation around the event horizon
- What is a lapse function
- Twin Paradox Explained
- Why Is General Relativity Hard to Work With?
- Time Dilation - Relative to Light Speed or Reference Point - I'm Confused?
- Newtonian frame of refference
- length contraction and accelerating frames
- Time Loop Examples
- scientific measurement standards
- How do black holes move?
- Connection between gravity time dilation and velocity.
- Mathematical Basis for Learning Relativity
- Visualizing a 4D structure
- How far away is it?
- The "Illusion of Time" and distant observers
- You approach a planet at a velocity near c, what do you see?
- Timetraveller killing himself in the past
- Redshift and Weak equivalence principle
- gravity is different
- The speed of light and the mass of a photon
- What if speed limit is slightly faster than light?
- Noob question about lorentz factor
- What are the differences between an object with mass 0 and mass > 0 ?
- Some questions about time dilation .. (muon etc.) ..
- Big Bang Time Dilation
- What is the observed precession of Mercury?
- FTL implies Backward Time Effect
- What is causality???
- Block Time vs Q. Indeterminacy
- Does time stop for a photon? Why is that a nonsensical question?
- Wald's definition of the Cauchy Horizon
- c maximized in its own direction, so v > c possible ?
- Questions about the speed of light
- 2nd order correction to gauge transformation
- Why cant an object travel faster than the speed of light?
- EP and active/passive mass
- Usefulness of Kretschmann scalar
- if light hits a mirror and then switches direction....
- Can a human travel to distant stars? And other questions.
- About dark matter and the limits of the universe.
- What is the effect of a neutron star's gravity on vertical rays of light?
- A simple question about tensor notation
- List of different relative speeds?
- Objects move into gravity=shorter time?
- I would like to see the math of something
- Assassin paradox
- Calculate Accuracy of GPS?
- How did light speed become the governor of relativity?
- The principle of inertia and hypothetical FTL particles
- Shooting up a rocket
- More sliding clock fun
- Inextendible worldlines
- Relativistic mass increase appearing to form a black hole vs. a real black hole
- Twin paradox question
- QED and Very Slow Light
- Mirror Puzzle
- Shape of Earth
- Gravity is space shrinking
- Lorentz Transformations Acceleration: A simple problem
- Question of units of B, H in Gaussian system
- Metric of two bodies
- Twins Paradox: The paradox within the paradox
- Curious about time dilation?
- Infinite mass and energy.
- Spacetime desynchronized in quantum realm?
- Diagonal metric
- Question about how Time varies with Velocity
- Passing the event horizon
- Mass increasing as velocity approaches c
- I don't understand photon clocks
- Quick tetrad/vierbein question
- Gravitational red shift
- Negative Mass repels Gravity?
- What experiment shows that the universal speed limit is the same as light?
- Simple question about time dilation in accelerated reference frames
- Questions about SR
- how are the ways in which time is dialted unified?
- Looking in to the past
- Do Racing Drivers Age Slower?
- Forces as Chrsitoffel symbols
- Very basic question- help?!
- Another basic question
- Meaning of lambda symbol?
- twin paradox... doubt
- Michelson & morley experiment...........
- Perceived time and distance at Speed of light
- SR, LET, FTL & Causality Violation
- A Relativity Experiment I'd Like to See
- Faster than Light Travel Question
- If a absolute point would exist, still relativity theory would be valid
- Question on Black Hole Metrics
- Travel faster than speed of light. According to what reference frame?
- Speed of light between a source and target moving wrt to each other
- changes in mass and length at high speed
- wikipedia quote on gravitational time dilation
- Is time slowing down or is it just taking a longer amount time?
- Poincare' group
- Does relativity have any day to day life applications?
- Acceleration/deceleration questions
- New animated video explaining Special and General Relativity.
- Question about curved space.
- is spacetime really bending?
- Why light is remains massless even if travelling w/ the fastest velocity?
- Effects of General Relativity
- What is the velocity of a photon?
- Four-Momentum Invariant and Conservation Laws Yielding Contradictory Results
- You may see a light wave as relative time, without Lorenz time dilation calculated
- how to find that the universe is expanding from general theory of relativity
- How fast can light change its direction?
- time for object to fall length of 10m rope, assuming g=10m/s
- Speed of Light
- How would Earth's time slow down?
- The set of Lorentz boosts and space rotations form a group
- Painleve chart for FRW spacetime
- how does gravitational time dilation increase the spacetime interval?
- SR, Inertial frames, Movement, Testing
- Initial conditions for BH in GR
- What is an invarient observable in GR
- Is there mass without momentum?
- Please explain these Equations in GR, Modified Universal law of Gravity.
- Relativistic electromagnetism
- Age and time ...
- Death to mass or to force?
- Minimum safe distance to black hole
- infinite speeds would defeat time keeping
- time dilation
- The effect of external masses on internal black hole geometry
- Where Can I find GR problems?
- Matter Lagrangian for perfect fluid
- What is time? Simply & Factually
- If an electron falls into a black hole?
- The relativity of time and defining the "age" of the universe
- Time Dilation at Center of a Neutron Star
- Four Momentum of Photon
- How speed changes time?
- The nature of causality in special relativity (not faster than light travel)
- What is the result of this laser/time dilation scenario?
- How do I go about learning GR?
- Solving the Geodesic equations for a space
- What does x-vt mean?
- How is the Riemann tensor proportinial to the curvature scalar?
- Warping of space and special relativity?
- Why does time slow down the faster you go?
- analogy between centrifugal force and gravity
- Does General Relativity actually explain gravity?
- What if something went faster than light?
- Relativity, ultimate rigidity and the speed of light.
- Does mass really increase with speed
- General form of a Lorentz transformation
- Time dilation derivation
- Speed of Light
- Photon interaction with gravity.
- Gauge transformation
- At what speed would one day = one year?
- Is there evidence for increased particle life due to gravitational time dillation?
- The past set of a stationary observer in Kerr space-time
- we can travel faster that light?
- E=mc^2, but nothing can travel faster than light?
- Photons from the past
- Questions regarding relativistic momentum
- Special relativity implies very odd results
- Difference between Newton & GR
- Energy in two different frames
- Observing the physics of Black Hole interiors
- Spacetime, physical or not really?
- Why extremal aging, not just maximal? (for an inertial body in spacetime)
- Why nothing about acceleration?
- Confusing twin paradox
- Higgs boson and gravity
- Foliation of time in quantum gravity
- Non-Tensors in GR
- Gravitational Redshift really verification of GR?
- Discussion of Inertial Frames of Reference
- light speed and time travel
- Higgs free space travelling, close to lightspeed possible ?
- Galilean transformation - can you show me an example?
- Quick question about curvation of spacetime
- Is the Milky Way galactic blackhole slowly sucking us in?
- Large black holes and information
- Another two ships relativity question
- Physical meaning of tensor contraction
- Einstein's Mirrors Experiment
- Radial expansion of the universe and the speed of light
- Observation from Single reference frame and STR
- Velocity of a photon from its own reference frame
- Speed of two spaceships relative to each other observed by an earth observer
- Higgs & Relativistic
- Spacetime Fabric Shear Strength
- Special Relativity: The Game!
- Why is this idea on addition of velocities in SR wrong?
- Mathematical Axioms of General Relativity
- Do we not even exist in some FoR?
- time stasis chamber
- Does a photon "know" how fast to leave its emitter?
- Speed of light = oo mass = black hole?
- Rotating black holes, causality and time travel ramble
- What on ether is the matter?
- Calculation of an integral with retarded time
- Temperature in different frames
- BB theory and preferred frames
- Einstein's Mirrors Experiment
- Behaviour of a box of light
- Acceleration through PD, relativistic momentum
- Recommend GR Texts
- Meaning of Spacetime Foliations
- Do things move in uniform motion in real life?
- Lorentzian contraction of a box increases the pressure inside???
- Gravitational potential energy storage location
- A Case for the 4-D Space-Space Block Universe
- How can you drive the metric of kaluza klein in 5 D?
- light speed question
- what comprises a SRT relative velocity?
- Confused about time dilation. (Just got introduced to relativity))
- Twin paradox question
- Why are the effects of Time Dilation permanent but Length Contraction is Not?
- Understanding proper distance in Schwarzschild solution.
- Questions about Alcubierre Drive
- Are gravitational effects instantaneous?
- thought experiment for general rel., I can't remember how it goes
- Question on light reflection
- Very confused about path of light from distant galaxies :-(
- Kaluza-Klein Particle
- inverse coefficients of dt & dr in Schwarzschild
- Stupid question on black holes and thermodynamics
- Sean Caroll GR textbook Ex 2.11
- A question about stationary reference frame
- What is the length
- Densest Material
- Relative Motion Leads To Impossibilities (or so it seems to me... can you help?)
- aberration of light in classical and relatvistical cases
- Exceed speed of light: always exceeded speed of light?
- How relativity could explain this engineering problem.
- Embedding Diagrams
- A variation of Twin paradox
- Time Dilation and Length Contraction the same thing?
- If FTL was true, shouldn't SETI start searching patterns also in neutrino bursts?
- Gravitational field calculation question
- Light clock question
- Field of moving point charge
- Light through a Coke bottle
- Thought Experiment regarding Time
- Is nonholonomic Xformation = Diffeomorphism