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 How are scientists able to distinguish between photons?
- San K
- · Replies 2 ·
Graduate Relativity: Simultaneous Events in Frames A and B
- Snip3r
- · Replies 5 ·
Graduate Deriving equation 4.64 for Christoffel connection variation in Carroll's textbook
- shichao116
- · Replies 2 ·
Graduate Covariant and Contravariant Tensors
- benk99nenm312
- · Replies 19 ·
Graduate General form of a Lorentz transformation
- rbwang1225
- · Replies 4 ·
Graduate EFE's question regarding Ricci scalar
- unchained1978
- · Replies 2 ·
Graduate Hyperbolas of constant t^2 - x^2
- stglyde
- · Replies 6 ·
Undergrad Could you say that GR is a theory of four or five dimensions?
- zheng89120
- · Replies 9 ·
Graduate Surface and center of the Earth clocks?
- Powd
- · Replies 21 ·
Graduate Redshift and time dilatation of Hawking radiation
- timmdeeg
- · Replies 4 ·
Graduate Does Time Dilation Affect Life and Death in Different Frames of Reference?
- Nakshatra
- · Replies 27 ·
Graduate Energy equal to time component of 4-momentum?
- marschmellow
- · Replies 9 ·
Graduate Creating Spacetime Diagrams with Math Software
- stglyde
- · Replies 1 ·
Graduate A Case for the 4-D Space-Space Block Universe
- bobc2
- · Replies 85 ·
Graduate BB theory and preferred frames
- TrickyDicky
- · Replies 94 ·
Graduate Gravitational lensing and the speed of light
- hypernihl
- · Replies 13 ·
Graduate Does Earth's Movement Affect the Twin Paradox in Space Travel?
- Snip3r
- · Replies 42 ·
Graduate Does a clock in free-fall slow due to gravitational time dilation?
- johne1618
- · Replies 8 ·
Graduate Galileo's pendulum could show that time is relative
- simplex
- · Replies 24 ·
Graduate D'Inverno derivation of Schwarzschild solution
- PhyPsy
- · Replies 2 ·
Graduate Is mass determination circular, or relative within reference frames?
- jaketodd
- · Replies 51 ·
Graduate Time dilation on a voyage to Proxima Centauri at near-light speed
- @nonymous
- · Replies 5 ·
Undergrad Relativistic mass thought experiment/proof?
- sorax123
- · Replies 18 ·
Graduate Why does the bending of space necessitate gravitational effects
- Padraic
- · Replies 19 ·
Graduate Why don't both observers age slower in relative motion?
- cataclysmic
- · Replies 11 ·
Graduate Inhomogeneous (poincare) lorentz transormation
- spacelike
- · Replies 3 ·
Graduate What will I see in this scenario? (involves rockets traveling near light speed)
- cataclysmic
- · Replies 3 ·
Graduate Time dilation in a twin clock experiment at 0.8c
- goodabouthood
- · Replies 34 ·
Graduate Escape of light perfectly orthogonal to black hole
- gatz
- · Replies 7 ·
Graduate Visualizing a 3-sphere in four spatial dimensions
- surajt88
- · Replies 6 ·
Graduate Gravitational field calculation question
- Monster99d
- · Replies 6 ·
Graduate Why are the effects of Time Dilation permanent but Length Contraction is Not?
- dfaullin
- · Replies 76 ·
Graduate Thought Experiment regarding Time
- dfaullin
- · Replies 8 ·
Graduate How Does the Electric Field of a Moving Point Charge Differ from Its Rest Frame?
- nos
- · Replies 6 ·
Graduate Time Dilation in a Non-Rotating Laser Sphere: Inside vs Outside
- Monster99d
- · Replies 1 ·
Graduate Is nonholonomic Xformation = Diffeomorphism
- friend
- · Replies 2 ·
Undergrad Time Dilation and Length Contraction the same thing?
- goodabouthood
- · Replies 7 ·
How Does Light Travel Through a Coke Bottle?
- Passionflower
- · Replies 2 ·
Undergrad Length of Moving Rod Relative to Frame S
- Snip3r
- · Replies 10 ·
Undergrad Why Does Stationary Observer See Light Clock Traverse Longer Distance?
- goodabouthood
- · Replies 4 ·
Graduate Should SETI search for FTL signals in neutrino bursts instead of EM radiation?
- whosapopstar?
- · Replies 2 ·
Undergrad Aberration of light in classical and relatvistical cases
- queenstudy
- · Replies 8 ·
Graduate Very confused about path of light from distant galaxies :-(
- fbs7
- · Replies 20 ·
Graduate How relativity could explain this engineering problem.
- duri
- · Replies 4 ·
Graduate Spacetime Fabric Shear Strength
- stglyde
- · Replies 15 ·
Graduate What is the Densest Known Material?
- dm4b
- · Replies 1 ·
Graduate Can Black Holes Challenge the Second Law of Thermodynamics?
- AuraCrystal
- · Replies 4 ·
Graduate What is the concept of aberration in classical and relativistic physics?
- digi99
- · Replies 15 ·
Undergrad Are gravitational effects instantaneous?
- jacksonb62
- · Replies 20 ·
Graduate What is a Kaluza-Klein particle?
- phys06
- · Replies 1 ·
Graduate Why do dr and dt have inverse coefficients in the Schwarzschild metric?
- gabeeisenstei
- · Replies 6 ·
Graduate Recommended GR Texts for Physics/Math Background
- marschmellow
- · Replies 2 ·
Graduate Does a photon know how fast to leave its emitter?
- stever
- · Replies 46 ·
Graduate FTL and causality violation in special relativity versus Lorentz Ether Theory
- stglyde
- · Replies 380 ·
Graduate What comprises a SRT relative velocity?
- Tracer
- · Replies 13 ·
Graduate Where does light reflect when moving toward a stationary infinite mirror?
- Snip3r
- · Replies 9 ·
Graduate Foliation of time in quantum gravity
- exponent137
- · Replies 10 ·
Graduate Twin paradox with clock handoff at 0.8c: how much time passes on Earth?
- goodabouthood
- · Replies 26 ·
Graduate Asymmetric Schwarzschild solution
- knobsturner
- · Replies 6 ·
Graduate Understanding proper distance in Schwarzschild solution.
- peter46464
- · Replies 4 ·
Graduate Gravity AND curved space-time bending light
- bockerse
- · Replies 2 ·
Graduate Does mass really increase with speed
- lowemack
- · Replies 103 ·
Graduate Proof of the Fundamental Theorem of Calculus
- digi99
- · Replies 60 ·
Graduate Questions about Alcubierre Drive
- markcochran
- · Replies 1 ·
Graduate Gravitational behaviour of antimatter
- paweld
- · Replies 41 ·
Methods for interdimensional travel if it were possible
- scheherazade
- · Replies 3 ·
Graduate Do we not even exist in some FoR?
- goodabouthood
- · Replies 15 ·
Graduate Light Speed Question: How Can 2 Light Particles Approach Each Other at 1xC?
- fpayam82
- · Replies 7 ·
Graduate Woodward effect and relativistic mass in propulsion
- sanman
- · Replies 19 ·
Graduate How can you drive the metric of kaluza klein in 5 D?
- optic27h
- · Replies 1 ·
Graduate Lorentzian contraction of a box increases the pressure inside?
- Messenger
- · Replies 14 ·
High School Galilean transformation - can you show me an example?
- goodabouthood
- · Replies 11 ·
Graduate If a absolute point would exist, still relativity theory would be valid
- digi99
- · Replies 11 ·
Graduate Rotating black holes, causality and time travel ramble
- Elroch
- · Replies 6 ·
High School Do things move in uniform motion in real life?
- goodabouthood
- · Replies 7 ·
Graduate Acceleration through PD, relativistic momentum
- Stickybees
- · Replies 4 ·
Graduate Can pressure cause gravity in a box of light?
- Elroch
- · Replies 1 ·
Graduate Falloff behaviour of light vs gravitation
- shalayka
- · Replies 3 ·
Graduate Two ships traveling at 0.999c on diverging paths 10 degrees apart
- nearc
- · Replies 3 ·
Graduate Calculation of an integral with retarded time
- FunWarrior
- · Replies 1 ·
Graduate Minimum safe distance to black hole
- berra
- · Replies 39 ·
Graduate Temperature in different frames
- SandeshPhy
- · Replies 2 ·
Graduate General Relativity, is gravity a force?
- AdkinsJr
- · Replies 29 ·
Discussion of Inertial Frames of Reference
- Casey Miller
- · Replies 17 ·
Graduate Could space and matter be different manifestations of the same thing?
- Narges
- · Replies 2 ·
Graduate Does mass come from the Higgs field and kinetic energy?
- nitsuj
- · Replies 7 ·
Undergrad Why force due to gravity or gravitation cannot be measured.
- rvn
- · Replies 6 ·
Undergrad Kinetic Energy approximation both Einstein's and Newton's
- TWest
- · Replies 8 ·
Time Stasis Chamber: Potential Tech in Near Future?
- megafu
- · Replies 2 ·
Graduate Mathematical Axioms of General Relativity
- learypost
- · Replies 4 ·
Graduate Is there a simultaneity paradox Feynman posed for large distances?
- billy_boy_999
- · Replies 11 ·
Graduate Observation from Single reference frame and STR
- universal_101
- · Replies 7 ·
Graduate Where does my velocity addition derivation fail in special relativity?
- nhmllr
- · Replies 4 ·
Undergrad Speed of two spaceships relative to each other observed by an earth observer
- salmise
- · Replies 3 ·
Graduate Did Einstein believe gravity was a force or spacetime curvature?
- NJV
- · Replies 10 ·
Graduate Radial expansion of the universe and the speed of light
- AugustusM
- · Replies 2 ·
Graduate Special relativity implies very odd results
- discountbrain
- · Replies 32 ·
Graduate Why nothing about acceleration?
- ShayanJ
- · Replies 4 ·
Graduate Velocity of a photon from its own reference frame
- sri sharan
- · Replies 4 ·
Graduate Why extremal aging, not just maximal? (for an inertial body in spacetime)
- Colin Mitch
- · Replies 7 ·