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 Relativity/Simultaneity - I understanding a few things?
- skycastlefish
- · Replies 5 ·
Undergrad Solving E=MC2: What Does C2 Imply?
- TR14L
- · Replies 9 ·
Graduate How to diagonalize a warped metric
- pbk137
- · Replies 3 ·
Graduate Explore Newton-Cartan Theory: Escape Velocity & Schwarzschild Metric
- JustinLevy
- · Replies 19 ·
Graduate Simultaneity of Events: Is It Possible?
- proculation
- · Replies 6 ·
Graduate Is there evidence to support the existence of gravity waves?
- jobyts
- · Replies 3 ·
Graduate Trouble with Lorentz transformations
- pc2-brazil
- · Replies 149 ·
Graduate The action of a particle point is [tex]\int ds = \int d\tau
- alejandrito29
- · Replies 2 ·
Graduate Proving Invariance of Spacetime Interval
- emob2p
- · Replies 20 ·
Graduate No Mass Objects: Can They Remain Stationary?
- cubud
- · Replies 5 ·
Graduate The parable of the two travelers
- stevmg
- · Replies 6 ·
Undergrad Why is gravitational mass the same as inertial mass?
- sten
- · Replies 20 ·
Graduate Alice, Bob and Charge falling into Black Hole
- Dmitry67
- · Replies 1 ·
Graduate Covariant formulation of Coulomb's Law
- Rootboy
- · Replies 1 ·
Graduate Resultant time dilation from both gravity and motion
- espen180
- · Replies 134 ·
Graduate Gravitational force and acceleration in General Relativity.
- yuiop
- · Replies 371 ·
Graduate Traveling anywhere in the galaxy in your life time
- mihaiv
- · Replies 3 ·
Graduate Is black hole existence relative to the reference system?
- mihaiv
- · Replies 8 ·
Graduate The terms length contraction and time dilation
- Fredrik
- · Replies 11 ·
Graduate Do gravity waves experience doppler effect?
- nottay
- · Replies 3 ·
High School Is it time for a new approach to teaching physics?
- Yb4real
- · Replies 1 ·
Graduate Echolocation, Relativity & Simultaneity: What Changes?
- UndeniablyRex
- · Replies 2 ·
Graduate EM vector potential - covariant or contravariant?
- pellman
- · Replies 8 ·
Graduate Relative motion and time dilation
- TurtleMeister
- · Replies 27 ·
Graduate We can not get back to our original position?
- cstvlr
- · Replies 1 ·
Undergrad What is the relationship between latitude and the accuracy of an atomic clock?
- Dmitry67
- · Replies 12 ·
Graduate Newtonian limit of Gravitational Klein-Gordon Equation
- FunkyDwarf
- · Replies 3 ·
Graduate Spaceship trapped inside event horizon - serious flaw
- tom.stoer
- · Replies 5 ·
Graduate A question that probably has something to do with simultaneity
- zanadu
- · Replies 11 ·
Graduate Do Falling Observers Experience Blueshift Inside a Black Hole?
- timetravel_0
- · Replies 12 ·
Graduate Gravitational Length Contraction and Dilation?
- D.S.Beyer
- · Replies 11 ·
Graduate Diagrammatic Tensor Notation from the Beginning
- LukeD
- · Replies 1 ·
Undergrad Why does Lorentz contraction occur?
- Taturana
- · Replies 2 ·
Graduate Why Is the Rest Energy of a Hydrogen Atom Less Than the Sum of Its Constituents?
- cepheid
- · Replies 4 ·
Graduate When Will Two Test Particles Cross Paths in the Schwarzschild Solution?
- Passionflower
- · Replies 15 ·
Graduate Does gravity vary with velocity?
- Zman
- · Replies 4 ·
Graduate Invariance of spacetime interval
- motoroller
- · Replies 10 ·
Undergrad Are Gravity Waves Rare? Understanding the Elusive Phenomenon
- Awsom Guy
- · Replies 8 ·
Graduate Is the tensor product T^ab T_ab non-negative?
- JustinLevy
- · Replies 2 ·
Graduate What happens to a laser pulse that is beamed through a gravity well?
- TCS
- · Replies 12 ·
Graduate Lagrangian equation in special relativity
- IPhO' 2008
- · Replies 2 ·
Graduate What Is Gravity and How Does It Relate to Space-Time and Mass?
- timetravel_0
- · Replies 16 ·
Graduate Do Falling Particles in Schwarzschild Solution Radiate?
- Passionflower
- · Replies 3 ·
Undergrad Travelers Live Longer: Proven by Physics
- Suzukigold
- · Replies 16 ·
Graduate Is there a true singularity in nature?
- the softrat
- · Replies 1 ·
Graduate Can one determine that an instrument is an accelerometer locally?
- atyy
- · Replies 5 ·
Graduate Density in the friedmann equation
- RedX
- · Replies 7 ·
Graduate Obtaining the Metric in a Boosted Observer Frame?
- Mentz114
- · Replies 1 ·
Undergrad Possible to adjust light with magnetic field?
- Amalan
- · Replies 5 ·
Graduate Derivation of classical limit in c = 1 units (i.e. without cheating)
- Count Iblis
- · Replies 2 ·
Undergrad Self-rotating body with speed of light
- rsuryatheja
- · Replies 3 ·
Graduate Gravitational Wave Detection: Understanding Interferometers
- jeebs
- · Replies 2 ·
Graduate Help with understanding Minkowski diagrams
- I dun get it
- · Replies 3 ·
Graduate Rectilinear vs Curvilinear Motion: Explained
- SpaceExplorer
- · Replies 5 ·
Graduate Describing 4-vectors in space-time
- jfy4
- · Replies 1 ·
Graduate Mass Increase When Moving at Speed of Light?
- Visigoth
- · Replies 11 ·
Graduate 'Direction' of space-time curvature ?
- mjones32
- · Replies 9 ·
Graduate How Does Changing Velocity Affect Inertial Frame Transformations?
- Fredrik
- · Replies 12 ·
Graduate Length contraction and the direction of motion
- Darkmisc
- · Replies 7 ·
Graduate Opposite beams of photons or electrons
- motoroller
- · Replies 4 ·
Graduate A non-inertial frame is non-inertial with respect to what?
- marcosschiavi
- · Replies 7 ·
Graduate What Happens to Rest Mass Objects from a Photon’s Perspective?
- ZirkMan
- · Replies 10 ·
Undergrad Travel time for a space ship at relativistic speeds
- lordl
- · Replies 7 ·
Undergrad Is Velocity Constant in the Instantaneous Rest Frame?
- luxiaolei
- · Replies 3 ·
Graduate Special relativity: local frames versus global frame in a loop scenario
- Cleonis
- · Replies 3 ·
Graduate Should a stationary charge on the earth radiate?
- abhi2005singh
- · Replies 12 ·
Graduate Can Black Holes Actually Die Out?
- skepticdude
- · Replies 1 ·
Graduate Question re: time dilation equations
- mathyou9
- · Replies 2 ·
Graduate Information Transfer and the speed of light
- Bevels
- · Replies 2 ·
Graduate Spacelike and Timelike singuralites
- off-diagonal
- · Replies 2 ·
Undergrad Einstein relativity- radiowaves when travelling at v>0.1c
- grade12
- · Replies 4 ·
Graduate Laps and Shift Function: Understanding the Role of t^a in Wald's GR Book (p.255)
- paweld
- · Replies 1 ·
Undergrad Faster than speed of light spaceship.
- mooneyg3
- · Replies 6 ·
Graduate Question about derivation of surface gravity of a black hole
- nrqed
- · Replies 2 ·
Graduate Faster than light / compress space
- Fed
- · Replies 9 ·
Graduate Weyl Tensor Components in n-Dim Manifold: N=3?
- paweld
- · Replies 5 ·
Graduate Gravitational time dilation, redshift and doppler
- Zman
- · Replies 3 ·
Graduate Twin Paradox (by acceleration)
- Jonnyb42
- · Replies 51 ·
Graduate Riemann tensor: indipendent components
- AdeBlackRune
- · Replies 5 ·
Graduate Derivation of Proper Time and Proper Space
- AdVen
- · Replies 17 ·
Undergrad Why can't we see the light before we turn on the bulb?
- Jonnyb42
- · Replies 1 ·
Graduate Topography of spacetime over time.
- D.S.Beyer
- · Replies 1 ·
Undergrad Can Two Spaceships Perceive Faster-Than-Light Speeds Relative to Each Other?
- fubarite
- · Replies 12 ·
Undergrad What is Albert Einstein's Theory of Spacetime?
- filegraphy
- · Replies 2 ·
High School What does E=mc^2 mean? How can it be used in an example?
- filegraphy
- · Replies 2 ·
Undergrad Is acceleration relative? (In the same way that velocity is)
- Georgepowell
- · Replies 32 ·
Graduate Does an object's mass truly increase with velocity due to kinetic energy?
- Fuz
- · Replies 8 ·
Graduate Light speed thought experiment
- rmshepherd
- · Replies 10 ·
Graduate Does compressing a mass to a smaller sphere change the curvature of space?
- TCS
- · Replies 11 ·
Graduate How Does Relativity Explain Light Behavior When Fired from a Moving Spacecraft?
- Grimm1111
- · Replies 8 ·
Undergrad Time Dilation: 1.25yr Trip at 2.40x10^8m/s
- pmor@hotmail.
- · Replies 12 ·
Graduate Mach's Principle: Right or Wrong?
- sanman
- · Replies 37 ·
Undergrad Do Gravitating Bodies Warp the Fabric of Space?
- jaketodd
- · Replies 80 ·
Graduate How come massless photon has energy
- Rico L
- · Replies 17 ·
Graduate Conformal Spacetime: Paths of Photons & Massive Particles
- wam_mi
- · Replies 3 ·
Undergrad Layman in search of help understanding relativity
- noscience123
- · Replies 21 ·
Graduate Confused about Euler-Lagrange Equations and Partial Differentiation
- wglmb
- · Replies 6 ·
Graduate How Does Zero Acceleration in One Frame Manifest as Nonzero in Another?
- GRDixon
- · Replies 19 ·
Graduate Can you be in stable orbit inside a blcak hole?
- TCS
- · Replies 26 ·
Graduate Absolute light speed or velocity or both?
- Faradave
- · Replies 3 ·