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 Is the Schwarzschild radius always constant in black holes?
- random3f
- · Replies 8 ·
Graduate Relativity and my Intergalactic Space Race
- StrangeChicke
- · Replies 4 ·
Graduate How Do Different Velocities Affect Clocks in Special Relativity?
- Achillez
- · Replies 10 ·
Graduate Light vs Non-EM Wave Velocity and Time Dilation
- sheetalbhat
- · Replies 10 ·
Graduate Simulation: ray of light near black hole
- halfelven
- · Replies 4 ·
Graduate Where can I find translated versions of the original General Relativity papers?
- Denton
- · Replies 7 ·
Graduate Why does the travelling twin age less if both see each other moving?
- fred2028
- · Replies 25 ·
Undergrad The twins paradox and explanation
- Stellar1
- · Replies 22 ·
Graduate What is the Equation Relating Tardyon Components in Different Reference Frames?
- bernhard.rothenstein
- · Replies 12 ·
Graduate Phase invariance of e.m. waves
- bernhard.rothenstein
- · Replies 8 ·
Graduate Does Time Dilation Occur with Uniform Motion?
- fred2028
- · Replies 4 ·
Graduate Why does light slow down when falling into a black hole?
- ohadohad2
- · Replies 14 ·
Undergrad What is the relative velocity of two observers with given object velocities?
- dragan
- · Replies 51 ·
Graduate Postulate and special relativity
- bernhard.rothenstein
- · Replies 26 ·
Graduate Why Is the Riemann Tensor Contracted in the Einstein Field Equations?
- captain
- · Replies 1 ·
Graduate From one space dimension to two space dimensions in special relativity
- bernhard.rothenstein
- · Replies 8 ·
Graduate Just how many different theories of gravity are there?
- DSR
- · Replies 13 ·
Graduate Thoughts (of an amateur) on the Solution to the Twin Paradox
- GregAshmore
- · Replies 10 ·
Graduate Stress energy tensor for rotating disc
- luxio
- · Replies 1 ·
Graduate How Does Speed Affect Time Dilation?
- mihais18
- · Replies 17 ·
Graduate Can length contraction be derived without using simultaneity?
- bernhard.rothenstein
- · Replies 8 ·
Graduate If you could make your mass=0, would you begin moving at c?
- Meatbot
- · Replies 7 ·
Undergrad Relativity Stumper for you Einsteins
- loush
- · Replies 9 ·
Graduate Galilean vs Lorentz transformation equations
- arbol
- · Replies 8 ·
Graduate Is the direction of a pulse from a laser pen dependent on the observer?
- GODISMYSHADOW
- · Replies 26 ·
Graduate How does the Gravitational Wave Rocket work?
- CJames
- · Replies 2 ·
Graduate Gravitational Self-Interaction
- gel
- · Replies 8 ·
Graduate Why can't we see objects fall into a black hole?
- spizma
- · Replies 6 ·
Where can I download general relativity video lectures?
- Shaun Culver
- · Replies 7 ·
Graduate Could a Special Mirror in Electromagnetic Waves Explain the Lorentz Factor?
- asymmetric
- · Replies 4 ·
Graduate Why does gravity feel identical to acceleration in the equivalence principle?
- Bullwinkle
- · Replies 18 ·
Graduate Where does time travel fastest? And a moving galaxy/light speed question.
- drawingthesun
- · Replies 3 ·
Graduate Is the 4-potential a 4-vector in non-Lorentz gauges?
- Llewlyn
- · Replies 14 ·
Graduate How is time and space affected by the warps in General Relativity?
- HumanAxiom
- · Replies 16 ·
Graduate Can Kinetic Energy Differences Cause a Wormhole to Collapse in Science Fiction?
- CJames
- · Replies 1 ·
High School Does a sphere maintain its shape when viewed at high speeds?
- cornfall
- · Replies 24 ·
High School What is gravity?
- Raisin-toe
- · Replies 14 ·
Graduate Does curved spacetime explain why we stay on the ground?
- Raisin-toe
- · Replies 25 ·
Graduate Gravitomagnetism and quantum theory of gravity?
- H.M. Murdock
- · Replies 6 ·
Graduate What Happens to Aging in the Twin Paradox When Both Twins Accelerate?
- Wannabeagenius
- · Replies 5 ·
Graduate Axioms needed to formalize special and general relativity
- jdstokes
- · Replies 10 ·
Graduate What would the universe look like from the perspective of a photon observer?
- Wallin
- · Replies 31 ·
Graduate Does a gravity well affect the speed of light?
- la grange
- · Replies 3 ·
Graduate Gravitational force and density.
- PatPwnt
- · Replies 6 ·
Undergrad Could a 6ft Object Hitting Earth at 99% Light Speed Destroy It?
- BosonJaw
- · Replies 9 ·
Graduate Lorentz Transformation: Conservation of Inner Product?
- princeton118
- · Replies 1 ·
Graduate Kerr solution as complex transformation
- dpidt
- · Replies 1 ·
Graduate Do Photons Coexist in the Same Space?
- Aelof
- · Replies 3 ·
Graduate Must measurement of time reference light?
- mdeng
- · Replies 13 ·
Graduate Relativistic velocity derivation under constant force
- cbriggs
- · Replies 6 ·
Graduate What causes gravity to warp spacetime in general relativity?
- HumanAxiom
- · Replies 10 ·
Graduate Energy in relation to space and time
- Stevie B
- · Replies 5 ·
Graduate Current status of gravitational collapse (full quantum mechanical treatment).
- arroy_0205
- · Replies 3 ·
Graduate The Effects of Gravitomagnetism on Surrounding Particles
- Senlathial
- · Replies 5 ·
Graduate Is gravity considered a force in modern physics?
- xxacefirexx
- · Replies 7 ·
Graduate Schwarzschild solution and Machian variable G
- Jonathan Scott
- · Replies 5 ·
High School What are improper lengths and improper time intervals?
- bernhard.rothenstein
- · Replies 2 ·
Graduate Math of an accelerating spaceship
- CJames
- · Replies 7 ·
Undergrad When the revolution of the earth on its axis accelerates
- ffrancis
- · Replies 1 ·
Undergrad What is the Smallest Constant Measurement of Time in the Universe?
- Yazirical
- · Replies 13 ·
Undergrad Can Black Holes Accelerate Objects to Light Speed?
- cosmic.ash
- · Replies 5 ·
Graduate Regarding the conversion of kinetic energy to mass
- Stellar1
- · Replies 14 ·
Graduate Proper Length and Time Intervals in the Lorentz Transformations
- bernhard.rothenstein
- · Replies 16 ·
Graduate Stationary axisymmetric spacetime
- Rainbow Child
- · Replies 9 ·
Graduate Does the Twin Paradox Challenge Classical Relativity?
- jujufactory
- · Replies 3 ·
Graduate Solve the Relativity Paradox: Two Objects Moving at Light Speed
- jujufactory
- · Replies 2 ·
Undergrad Time dilation with a soccer ball instead of light
- Sleek
- · Replies 2 ·
Undergrad Understanding Light: Puzzled by Velocity?
- Prasanna Suman
- · Replies 2 ·
Graduate Force propagation and length contraction
- birulami
- · Replies 5 ·
Undergrad Do observers in different frames measure the same relative speeds between them?
- wsellers
- · Replies 3 ·
Graduate Restrictions on Riemann components
- oldman
- · Replies 2 ·
High School Do gravitational field lines always need to be straight? Example?
- sadhu
- · Replies 2 ·
Undergrad Why do we talk about speed of light in a vaccum?
- p4h
- · Replies 16 ·
Graduate Can a black hole be accelerated to go faster than the speed of light?
- solidon
- · Replies 11 ·
Graduate Uniform Acceleration and Gravity (again)
- Jorrie
- · Replies 10 ·
Scanned relativity books on the internet
- bernhard.rothenstein
- · Replies 5 ·
Graduate Is space curvature misleading?
- Helios
- · Replies 2 ·
Undergrad Must clock synchronization come first when teaching special relativity?
- bernhard.rothenstein
- · Replies 10 ·
Graduate General Relativity: gravitational waves
- HumanAxiom
- · Replies 2 ·
Graduate Newtonian perturbations to Minkowski
- smallphi
- · Replies 2 ·
Graduate Does relativity's relative simultaneity imply multiple worlds exist?
- colorSpace
- · Replies 14 ·
Graduate Do the dye stains meet in the middle of the train car?
- wsellers
- · Replies 13 ·
Graduate What is the Newtonian limit of LCDM in astrophysics?
- smallphi
- · Replies 15 ·
Undergrad Do Black Holes Expand at the Speed of Light?
- glowing lights
- · Replies 12 ·
Graduate Following Schwartz's argument re: measuring (g-2)
- GreenPenInc
- · Replies 3 ·
Graduate Does the Gravitational Mass of a Moving Particle Increase with Inertial Mass?
- cos
- · Replies 2 ·
Graduate Does special relativity actually affect GPS accuracy?
- p4h
- · Replies 45 ·
Graduate Is the Schwarzschild Metric Solution Correct?
- Orion1
- · Replies 3 ·
Undergrad Would Dark Matter Make Us Invisible at High Speeds?
- PRyckman
- · Replies 2 ·
Graduate Lambda Warp Drive: Locally Manipulating for Alcubierre Warp Bubble
- publius
- · Replies 1 ·
Graduate Can a Stationary Observer Replace a Moving One in Relativity Experiments?
- done
- · Replies 17 ·
Graduate Photon-Electron collision problem
- Rainbow
- · Replies 3 ·
Graduate Symmetry of mass distribution producing radial gravitational force field
- mma
- · Replies 11 ·
Graduate Geodesic applied to twins paradox
- Loren Booda
- · Replies 47 ·
Graduate Mach's Principle and Equivalence
- yogi
- · Replies 3 ·
Graduate E=mc^2 in 1,2,3,5,6 dimentions?
- nabki
- · Replies 6 ·
Graduate Modified gravitation ; how to make it relativistic ?
- notknowing
- · Replies 7 ·
Graduate How does angular speed affect the relativistic mass of a rotating cylinder?
- the one
- · Replies 4 ·
Graduate Is Exotic Matter Driving the Universe's Accelerating Expansion?
- hammertime
- · Replies 2 ·
Graduate Le Sage Gravity - some questions
- Ad_Absurdum
- · Replies 3 ·