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 Relativistic Momentum Not Conserved after a Collision?
- Puky
- · Replies 12 ·
Graduate Is Gravity a force or the absence of a force
- genphis
- · Replies 7 ·
Graduate Calculation of Proper Acceleration
- pervect
- · Replies 31 ·
Graduate Observations from a rocket moving at 0.9c away from Earth
- kamenjar
- · Replies 4 ·
Undergrad Why is the speed of light equal to c?
- Sunfire
- · Replies 8 ·
Graduate Blackhole and Anti-Blackhole Annihilation
- Pyce
- · Replies 8 ·
Undergrad Are Special Relativity variables transformable
- dbmorpher
- · Replies 3 ·
Graduate Regarding arguments in favor of Principle of Relativity
- A Dhingra
- · Replies 3 ·
Undergrad Equation for Mass Moving Near Speed of Light: What Is It?
- DeepSpace9
- · Replies 3 ·
Graduate Explanation for Robertson-Walker being Conformally Flat
- Airsteve0
- · Replies 1 ·
Graduate Einstein's train experiment and the relativity of simultaneity
- frakie
- · Replies 47 ·
Graduate Meaning and derivation of 4-vector
- simoncks
- · Replies 5 ·
Undergrad How haven't we managed to blow up Earth by using particle accelerators?
- Davidthefat
- · Replies 15 ·
Graduate Can someone explain the 4-force to me.
- ozone
- · Replies 5 ·
Graduate How to understand Parallel Transport
- friend
- · Replies 9 ·
Graduate How Did Einstein Manage To Even Come Up With The Theory Of Special Relativity?
- Davidthefat
- · Replies 18 ·
Graduate Preferred and Unique Coordinate System
- mattharrigan
- · Replies 5 ·
Graduate A couple of miscellaneous questions about special relativity
- marschmellow
- · Replies 10 ·
Graduate Matter outside of the territory under consideration. Where are we?
- Serge58
- · Replies 3 ·
Graduate Which Train Explodes First in the Time Dilation Paradox?
- bgq
- · Replies 99 ·
Graduate Covariant and contravariant vectors
- Shan K
- · Replies 4 ·
Graduate Covariance of Maxwell Eqn. - conceptual question
- Mrbeekle
- · Replies 3 ·
Graduate Lorentz transformations: how can I derive the time equation?
- TrueBlue1990
- · Replies 2 ·
Undergrad Speed of water and relation to light
- Serge58
- · Replies 50 ·
Graduate Lorentz group and the restricted Lorentz group
- TrickyDicky
- · Replies 2 ·
Graduate Are massless objects immune to time dilation?
- coktail
- · Replies 20 ·
Graduate Does gravity need a force-carrying particle if spacetime curvature explains it?
- StukaJU87c
- · Replies 1 ·
Graduate Singularities and Rindler horizon
- zonde
- · Replies 16 ·
Graduate Ehrenfest Paradox + Twin Paradox
- simoncks
- · Replies 16 ·
Graduate 4x4 lorentz matrix and finding its inverse
- 71GA
- · Replies 2 ·
Graduate Rindler space in semi-general relativity
- Funzies
- · Replies 1 ·
What Are the Best Books to Understand the Mach Principle in General Relativity?
- sadegh4137
- · Replies 3 ·
Graduate Lorentz transformations in non-inertial frames
- giants86
- · Replies 26 ·
Graduate Spacetime diagrams: ct axis and time contraction and length dilation
- RadiantL
- · Replies 3 ·
Graduate Can a 4-Potential Approximate Gravitational Field in Weak-Field Limit?
- raopeng
- · Replies 2 ·
Graduate Robertson-Walker Models Conformally Flat
- Airsteve0
- · Replies 6 ·
Graduate Simple GR Einstein Notation Question
- sderamus
- · Replies 4 ·
Graduate Time Dilation at Rest: Theoretical Perspectives
- jredinger
- · Replies 6 ·
Graduate Time Dilation and it's formula
- RadiantL
- · Replies 9 ·
Graduate Why is the Minkowski metric dx² + dy² + dz² - c²dt² invariant?
- aaaa202
- · Replies 3 ·
Graduate Current Updates on LIGO and Gravitational Waves
- sophiecentaur
- · Replies 2 ·
Graduate Pole through Earth, faster than c?
- coktail
- · Replies 12 ·
Graduate Is There a Simple Explanation for the Area Element in Fermi Normal Coordinates?
- PLuz
- · Replies 1 ·
Graduate Massive objects and relativistic effects
- Myslius
- · Replies 1 ·
Graduate What are the four clock readings?
- starfish99
- · Replies 9 ·
Graduate Attempt on Twin Paradox via Minkowski diagrams
- Jeronimus
- · Replies 3 ·
Graduate Speed of Gravity: Is the Sun 8 Minutes Behind?
- KingBigness
- · Replies 28 ·
Graduate Gravitational time dilatation
- Kamil Szot
- · Replies 16 ·
Graduate What causes geodesic incompleteness in spacetime manifolds?
- dapias09
- · Replies 1 ·
Graduate Embedding hyperbolic constant-time hypersurface in Euclidean space.
- andrewkirk
- · Replies 5 ·
Undergrad What happen time dilation is videotaped?
- Ruari1967
- · Replies 7 ·
Graduate Relativistic Resistance against Acceleration?
- Bjarne
- · Replies 11 ·
Graduate Will Relativity Determine the Outcome of a Spaceship Explosion?
- bgq
- · Replies 13 ·
Undergrad Misunderstanding something: circular time dilation loop
- MHD93
- · Replies 3 ·
Graduate Center of mass velocity greater than 1c?
- randombill
- · Replies 15 ·
Graduate What are Robertson diagrams and Ω-ΩM planes called in textbooks?
- Airsteve0
- · Replies 2 ·
Graduate Does temperature affect black holes
- Unevolved
- · Replies 15 ·
Graduate Is there any relation which holds between energy and metric space ?
- aditya23456
- · Replies 5 ·
Graduate Does time exist or just energy state changes?
- eng_09
- · Replies 2 ·
Graduate Time Dilation Comparison: Mass vs Speed
- aditya23456
- · Replies 4 ·
Undergrad Whats in the space between any 2 galaxies?
- aditya23456
- · Replies 6 ·
Graduate Lorentz contraction and gravitational field
- Xavius
- · Replies 20 ·
Graduate Can somebody explain the Warp Theory Equation?
- xXIHAYDOIXx
- · Replies 1 ·
Undergrad Does Electromagnetic radiation travel faster than the speed of light?
- buzzdiamond
- · Replies 6 ·
Graduate Hidden Momentum: Loop Precession Torque
- Q-reeus
- · Replies 1 ·
Graduate Graphical example of BH formation by PAllen
- zonde
- · Replies 162 ·
Graduate Paradox of non inertial forces in relativity
- soothsayer
- · Replies 5 ·
Graduate Energy/Mass transitioning from finite to infinite amounts
- Cody Richeson
- · Replies 15 ·
Graduate Time Dilation and physical processes
- Cody Richeson
- · Replies 20 ·
Graduate How are observers and frames of reference treated in general relativity?
- HomogenousCow
- · Replies 6 ·
Undergrad Lorentz transformation and Pythagoras' theorem
- shounakbhatta
- · Replies 5 ·
Graduate Alcubierre warp drive experiments and exotic matter requirements
- Galteeth
- · Replies 6 ·
Can we travel to the past and become young again?
- ZokunuZer0
- · Replies 8 ·
Graduate Linearized Einstein Field Equations
- PLuz
- · Replies 2 ·
Graduate Geodesic Equation from conservation of energy-momentum
- PLuz
- · Replies 3 ·
Graduate Holes in a 2-D surface and holes in 3-D space
- Cody Richeson
- · Replies 7 ·
Graduate Stuffing a black hole full of electrons?
- Perfection
- · Replies 11 ·
Graduate How do the concepts of 'constant c' and 'locality' work in GR?
- arindamsinha
- · Replies 10 ·
Graduate Is the current view of the intergalactic speed limit short sighted?
- Bob c2
- · Replies 2 ·
Graduate Error in Bel's 1958 Article: Correcting Lanczos Formula
- zn5252
- · Replies 5 ·
FTL Travel - Are we in trouble when the oil runs out?
- Xenharmonic
- · Replies 10 ·
Graduate Proving the Vacuum Field Equations are Trivial for n=3
- Airsteve0
- · Replies 3 ·
Graduate Is it possible to see objects move faster than c?
- Damo ET
- · Replies 19 ·
Graduate Atkisnon's derivation of \gamma factor.
- MathematicalPhysicist
- · Replies 3 ·
Graduate Big Crunch in Robertson-Walker Models
- Airsteve0
- · Replies 1 ·
Graduate Quick idea on the make-up of matter
- CIANSA
- · Replies 11 ·
Graduate Using length contraction to push a bomb trigger
- Jeronimus
- · Replies 9 ·
Graduate How does a photon experience time at light speed?
- trewsx7
- · Replies 45 ·
Undergrad Does tensor order relate to matrix rank and dimensions?
- shounakbhatta
- · Replies 13 ·
Undergrad Is there such a thing as a photonic boom?
- dbmorpher
- · Replies 1 ·
Graduate Vanishing Ricci Tensor in 3 Dimensions
- Airsteve0
- · Replies 1 ·
Graduate Naked singularities, timelike singularities
- bcrowell
- · Replies 14 ·
Graduate Speed of mass-energy flux, derived from stress-energy?
- bcrowell
- · Replies 7 ·
Graduate General relativity and tidal forces
- altergnostic
- · Replies 61 ·
Graduate Why can we not treat gravity as a force?
- HomogenousCow
- · Replies 6 ·
Graduate If moving object decelerated into your frame, will it lengthen?
- Aziza
- · Replies 45 ·
Graduate Can We Detect an Antimatter Black Hole?
- SHISHKABOB
- · Replies 8 ·
Graduate Rotation at close to the speed of light
- noricarter
- · Replies 2 ·
Graduate Can we see light if we move our eyes at speed of light?
- adityakiran18
- · Replies 37 ·
Graduate Is Gravity Really Just Curved Spacetime?
- markf
- · Replies 40 ·