Join in expert discussion on special and general relativity discussion. Relativity is the dependence of various physical phenomena on relative motion of the observer and the observed objects.
Threads
Graduate A diff-invariant 1+1d QFT with divergent central charge?
- quelarion
- · Replies 2 ·
Graduate Spin precession of observer at rest in rotating shell
- WannabeNewton
- · Replies 13 ·
Undergrad Can you explain how time is not constant?
- yoyopizza
- · Replies 26 ·
Graduate General relativity on infinite dimensional Banach spaces
- MathematicalPhysicist
- · Replies 6 ·
Graduate SR Effects on Interstellar Probe: Can Messages Return in 50 Years?
- dbmorpher
- · Replies 3 ·
Graduate Power Series from MTW 19.1: Explained?
- zn5252
- · Replies 1 ·
Graduate How does the null energy condition relate to dark energy's equation of state?
- Madster
- · Replies 2 ·
Graduate Do GPS Clocks Really Run Slower Than Earth Clocks Due to Time Dilation?
- exmarine
- · Replies 4 ·
Graduate 19th-century constraints on properties of the aether
- bcrowell
- · Replies 3 ·
Graduate Gravitation in N+1 Dimensional Flat Space
- ophase
- · Replies 6 ·
Graduate I know that nothing can exceed the speed of light, but
- student34
- · Replies 42 ·
Graduate What is the origin of inertia in relativity?
- arindamsinha
- · Replies 11 ·
Undergrad Why is the theory of relativity a theory?
- VertexOperator
- · Replies 21 ·
Graduate A special point in special relativity
- n_ktt
- · Replies 31 ·
Graduate Experiment on mass of a photon
- Slait
- · Replies 33 ·
Graduate Gravity & Magnetism: How Mass Interacts with Space-Time?
- Apophenia
- · Replies 1 ·
Graduate No definite viewpoint for the accelerating traveler?
- Alain2.7183
- · Replies 35 ·
Graduate Why is the EH of a BH considered to be expanding at c?
- Tracer
- · Replies 25 ·
Graduate Solving a Momentum Question: Struggling with Simple Cons?
- stallm
- · Replies 2 ·
Graduate Is Dingle's Critique of the Lorentz Transform Valid?
- exmarine
- · Replies 9 ·
Graduate Does Relativistic Mass Affect Weight and Gravity?
- greswd
- · Replies 11 ·
Graduate How to manipulate the determinant of metric tensor?
- jtceleron
- · Replies 2 ·
Graduate Length contraction problem of right angled triangle
- djsourabh
- · Replies 6 ·
Graduate Why acceleration is absolute in special relativity?
- GregAshmore
- · Replies 335 ·
Graduate Does the relativity of simultaneity imply a sort of determinism?
- RLutz
- · Replies 17 ·
Graduate Why doesn't composing Lorentz transforms give the relativistic velocity addition formula?
- exmarine
- · Replies 4 ·
Graduate What do we mean by pure gravity
- unrwar
- · Replies 2 ·
Graduate What is the Physical Meaning of Gravitational Wave Detection?
- TrickyDicky
- · Replies 29 ·
Graduate List of Special Relativity Paradoxes.
- greswd
- · Replies 12 ·
Graduate A problem from Sean Carroll's about Killing vectors
- shichao116
- · Replies 3 ·
Graduate Conflicting Transverse Doppler Shift Equations?
- greswd
- · Replies 4 ·
Graduate How does kinetic energy transfer when only the observer changes velocity?
- Skwint
- · Replies 14 ·
Graduate Twin clocks-is it acceleration?
- phyti
- · Replies 58 ·
Graduate Why Does Rotating the Michelson-Morley Apparatus Change the Time Delay?
- BareFootKing
- · Replies 1 ·
Graduate Cherenkov Radiation in Vacuum: Can Superluminal Particles Emit Light?
- e.chaniotakis
- · Replies 5 ·
Graduate Light energy, just like time, is relative?
- Aspchizo
- · Replies 5 ·
Graduate Gravity is a limitless supply of energy to inflaton field
- AlephClo
- · Replies 5 ·
Graduate Does the Starting Point Influence Time Dilation Observations?
- peterspencers
- · Replies 14 ·
Graduate Resolving the Twin Paradox in Relativity
- thehangedman
- · Replies 15 ·
Graduate Varying with respect to vierbein
- pleasehelpmeno
- · Replies 3 ·
Can we travel to the past in general relativity?
- bobby77
- · Replies 4 ·
Graduate No privileged frame of reference
- emd
- · Replies 21 ·
Graduate How do we mathematically define an inertial frame in GR?
- Kontilera
- · Replies 1 ·
Graduate Varying determinant of a metric
- pleasehelpmeno
- · Replies 22 ·
Graduate Contracting g^μνg_μν and contracting metric with tensor
- pleasehelpmeno
- · Replies 6 ·
Graduate Relativity Paradox: Is Moving at Speed of Light Possible?
- jaydnul
- · Replies 8 ·
Graduate Does a free falling charge radiate ?
- greswd
- · Replies 102 ·
Graduate Killing Vectors (question on Problem)
- Morgoth
- · Replies 6 ·
Graduate Time Dilation in Spinning Cylinder Room: Can We Break the Speed of Light?
- roshan2004
- · Replies 1 ·
Graduate Is the Twin Paradox a Logical Mistake in Time Dilation and Relativity?
- High Overlord
- · Replies 8 ·
Graduate Can metrics reveal flatness without computing the Riemann tensor?
- Morgoth
- · Replies 9 ·
Undergrad Can Matter Waves Travel Faster Than Light?
- Akshay_Anti
- · Replies 3 ·
Graduate Time dilation and mental computation in relativistic reference frames
- DIYMobileAudio
- · Replies 6 ·
Graduate Theory of Relativity VS. Relativity to placement
- SteveDave
- · Replies 4 ·
Graduate Do stationary masses in empty space attract each other?
- xlsdx
- · Replies 6 ·
Graduate Two observers. One closer to an event horizon.
- longcreepyhug
- · Replies 11 ·
Graduate Different Clock Rates Throughout Accelerating Spaceship
- 1977ub
- · Replies 110 ·
Graduate Is Poincare wrong about no preferred geometry?
- jmarshall
- · Replies 21 ·
Graduate If I acclerate and observe a photon, do I see the spin of the photon changing?
- jartsa
- · Replies 2 ·
Graduate Where do you think a black hole leads to, or what is inside of one?
- blackholefizix
- · Replies 1 ·
Graduate Light clock with spaceship moving vertical at .99c
- ebodet18
- · Replies 4 ·
Graduate Faster velocity than the speed of light?
- sydfremmer
- · Replies 30 ·
Graduate Time and space travel at light speed
- mike777
- · Replies 25 ·
Graduate Spacetime diagram - Twin paradox
- jaumzaum
- · Replies 41 ·
Graduate Does the magnetic field in relativity move at the same speed as the magnet?
- arydberg
- · Replies 2 ·
Graduate Rigorous definition of a family of observers in relativity
- WannabeNewton
- · Replies 4 ·
Graduate Do forces compose/superpose in special relativity?
- James MC
- · Replies 17 ·
Graduate Einstein postulates and the speed of light
- MHD93
- · Replies 56 ·
Graduate Does the twin paradox hold true for particles as well?
- Adrian07
- · Replies 17 ·
Graduate Logical Proof That Black Holes Can't Exist
- Spin-Analyser
- · Replies 3 ·
Graduate Can someone confirm that this is how time dilation works?
- chestycougth
- · Replies 2 ·
Graduate Is a Black Hole a Wormhole According to Poplawski's Theory?
- PeterDonis
- · Replies 10 ·
Graduate What is the principle of equivalence - gravitational vs inertial mass?
- SinghRP
- · Replies 16 ·
Graduate Hafele-Keating experiment: altitude and clock calibration concerns
- Didymus
- · Replies 4 ·
Graduate Why is the Reissner-Nordstrom Metric Not Considered a Vacuum Solution?
- gentsagree
- · Replies 7 ·
Graduate Testing Equivalence Principle: Prying Gravity From Inertia
- Celeritas02
- · Replies 3 ·
Undergrad Animation of spacetime curvature in general relativity
- A.T.
- · Replies 13 ·
Graduate Is the growth of black holes paradoxical?
- BitWiz
- · Replies 31 ·
Graduate Understand Special Relativity and Time paradox
- jaumzaum
- · Replies 406 ·
Graduate How does the event horizon of a blackhole know how to behave?
- Lino
- · Replies 9 ·
Undergrad Is E=mc2 About Converting Mass to Energy?
- big_bounce
- · Replies 14 ·
Graduate Why does dividing a cube increase its total surface area?
- HowardTheDuck
- · Replies 16 ·
Graduate Is dark matter the graviton or basis of spacetime?
- rdeanreaper
- · Replies 8 ·
Graduate Does the universe's total gravitational pull have a direction?
- brenan
- · Replies 2 ·
Graduate Time slowing down for someone traveling just under the speed of light
- mycotheology
- · Replies 13 ·
Graduate Simultaneous events - special relativity
- jaumzaum
- · Replies 4 ·
Graduate Shining a laser out of a train - What does the stationary
- mycotheology
- · Replies 3 ·
Undergrad Frames of reference for speed?
- yoyopizza
- · Replies 25 ·
Graduate Does the AdS radius-cosmological constant relation depend on spacetime dimensions?
- gentsagree
- · Replies 1 ·
Graduate Derivation of gauge condition in linearized GR
- WannabeNewton
- · Replies 5 ·
Graduate Is There a Hidden Universal Constant that Affects All Branches of Science?
- microedit
- · Replies 4 ·
Graduate Metric Properties of a Simple ds^2 Equation
- pleasehelpmeno
- · Replies 1 ·
Graduate Equilibrium temperature distribution in gravitational field
- Jano L.
- · Replies 10 ·
Graduate Physical model of measurement for affine geometry, dual
- bcrowell
- · Replies 6 ·
Graduate Relativity question - effects between moving and stationary particles?
- xxYOUKNOWMExx
- · Replies 3 ·
High School Is time a real dimension or just a human construct?
- Sabiancym
- · Replies 5 ·
Undergrad Can kinetic energy be added linearly?
- kbar1
- · Replies 1 ·
Graduate The speed of light in a gravitational field
- e2m2a
- · Replies 92 ·
Graduate Name and reference for current conservation theorem in differential geometry
- Jip
- · Replies 11 ·
Graduate Classical Fields and Newton's 2nd Postulate of Motion
- dr_k
- · Replies 27 ·