- Questions on Space, Distance and Energy
- Laser and speed
- speed of light as an impossibility
- Potential to rectify an error in wikipedia
- 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
- Gravity by James B Hartle
- 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
- Integral or Statistical Mechanics
- 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
- Light travel in media
- 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
- 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?