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 does distance affect simultaneity when accelerating?
- analyst5
- · Replies 17 ·
Graduate General proof of E² = (cp)² + (mc²)² without using γ
- lightarrow
- · Replies 18 ·
Graduate Why does light direction affect time dilation in a train thought experiment?
- phellen
- · Replies 12 ·
Undergrad Does time control light speed?
- ibzy
- · Replies 5 ·
High School What causes weightlessness in a free fall?
- chaszz
- · Replies 4 ·
Graduate Energy-mass equivalence simplification of equations?
- blokpoi
- · Replies 10 ·
Graduate About the convention of simultaneity
- analyst5
- · Replies 21 ·
Graduate Regarding notation for Lorentz transformation
- grzz
- · Replies 11 ·
Graduate Is G a Function of R in Einstein's Field Equations?
- Jonny_trigonometry
- · Replies 6 ·
Graduate Why does the geodesic equation work in curved spacetime?
- Benjam:n
- · Replies 5 ·
Graduate Proper Reference Frame -Accelerated observer
- WannabeNewton
- · Replies 4 ·
Graduate Definition of the Einstein Tensor
- Dreak
- · Replies 23 ·
Graduate Force on a particle , length contraction
- Crazymechanic
- · Replies 5 ·
Undergrad What Would the Universe Look Like While Traveling Close to the Speed of Light?
- Fieldwaveflow
- · Replies 7 ·
Graduate Say I have my pen on my desk; does it describe a geodesic?
- Dreak
- · Replies 9 ·
Graduate Do Frames Affect Dimensional Units?
- BitWiz
- · Replies 1 ·
Graduate Calculating Invariant pT in 2->2 Processes
- JoePhysicsNut
- · Replies 1 ·
Graduate Reason behind speed of em waves being constant
- dwellexity
- · Replies 25 ·
Graduate Can You Travel to the Roman Empire Using a Wormhole?
- JordanSC5
- · Replies 3 ·
Graduate Contra-variant and Co-variant vectors
- exmarine
- · Replies 5 ·
Graduate Light wavelenths longer than diameter of black hole?
- Stonius
- · Replies 15 ·
Graduate Can spacetime be visualized as separate space and time layers?
- Miket123
- · Replies 1 ·
Graduate How does relativity determine what velocity I'm actually traveling at?
- Ultermarto
- · Replies 1 ·
Graduate Does space have springiness around massive objects?
- Ionjump
- · Replies 8 ·
Graduate Was Wald wrong? A question with the problem 4 in Chapter 6
- qinglong.1397
- · Replies 7 ·
Graduate I don't see the problem with action at distance
- Erland
- · Replies 12 ·
Graduate Blueshift at event horizon in rest and accelerated frames
- Stonius
- · Replies 12 ·
Graduate Varying an Action in Zee's GR Book
- dm4b
- · Replies 4 ·
Graduate Linear Gravity Field - Lagrangian
- ProfDawgstein
- · Replies 8 ·
Graduate Mass conservation charged dust
- WannabeNewton
- · Replies 30 ·
Graduate Measuring speed of light with enhanced detectors
- Darko M
- · Replies 11 ·
Graduate Proving that the det of the Lorentz tensor is +1 or -1 (MTW p 89)
- TerryW
- · Replies 1 ·
Undergrad Galaxies Rotate Fast: Gravitational Lens Effect
- Abstractness
- · Replies 2 ·
Graduate Can someone travelling at c race a photon?
- QuestionMarks
- · Replies 13 ·
Graduate Implications of Constant c Squared: E/m = Constant?
- VernonX
- · Replies 2 ·
Graduate Are singularities part of the manifold?
- TrickyDicky
- · Replies 150 ·
Graduate Electromagnetic Field Lagrangian - Field Equations
- ProfDawgstein
- · Replies 15 ·
Graduate Faster than light travel proved sort off
- mark_gg
- · Replies 61 ·
Graduate Local Versus Remote Views of Temperature
- anorlunda
- · Replies 3 ·
Graduate Energy Change Due to Doppler Shift
- deadscientist
- · Replies 3 ·
What is curvature of space?
- Ionjump
- · Replies 1 ·
Graduate Gravitational time dilation reason
- rogerk8
- · Replies 41 ·
Graduate What mechanism causes the acceleration?
- LuckyNate
- · Replies 6 ·
Graduate SL(2,C) to Lorentz in Carmeli's Theory of Spinors
- arkajad
- · Replies 80 ·
Undergrad Can a String Travel Faster than the Speed of Light?
- mausten
- · Replies 13 ·
Undergrad Photon's Point Sized Universe or plane sized?
- aayushgsa
- · Replies 38 ·
Graduate How does time dilation affect when light left a distant supernova?
- Romulo Binuya
- · Replies 8 ·
Graduate Are the following 2 equations lorentz invariant?
- Dreak
- · Replies 6 ·
Graduate Formulating x^n Coordinate System for Non-Rectangular/Spherical Riemann Manifold
- Philosophaie
- · Replies 1 ·
Graduate Poisson bracket and Electric and Magnetic Weyl tensor in GR
- nix00
- · Replies 7 ·
Graduate Is there a redshift in a conformally flat metric space?
- tardy
- · Replies 12 ·
Undergrad Do Forces Change in Magnitude at High Velocities?
- bgq
- · Replies 6 ·
Undergrad Non-rotating or rotating Metric
- Philosophaie
- · Replies 7 ·
Graduate Is there an Instant in Time That's Everywhere The Present
- sb635
- · Replies 35 ·
Graduate Why does the time dilation equation include an xv/c² term?
- Platformance
- · Replies 34 ·
Graduate Geodesic Equation: Generalizing for Functions F
- tom.stoer
- · Replies 2 ·
Graduate Difference between timespace expansion/contraction and kinetic motion?
- MiloOfCroton
- · Replies 10 ·
Graduate Is Relativity Automatically Accounted for in Maxwell's Equations?
- cragar
- · Replies 6 ·
Graduate For the ADM alternative:http://arxiv.org/abs/gr-qc/0604064
- Orion1
- · Replies 7 ·
Undergrad Building a measurement system based on C
- jnorman
- · Replies 8 ·
Undergrad Does uncollimated light form fringes in Michelson Morley?
- Kalidor
- · Replies 7 ·
Graduate Why is the curvature tensor non-zero in a local inertial frame?
- sadegh4137
- · Replies 22 ·
Graduate General covariance vs. locality
- sadegh4137
- · Replies 1 ·
Undergrad How much energy does it take to reach relativistic speeds?
- schonovic
- · Replies 10 ·
Graduate Does entropy prove time is real against Lanza's biocentrism argument?
- JordanSC5
- · Replies 2 ·
Graduate 'Expansion' of fluid world lines
- zn5252
- · Replies 9 ·
Graduate Why Do These Riemann Tensor Terms Cancel Each Other Out?
- ProfDawgstein
- · Replies 3 ·
Graduate Energy Momentum Tensor - EM - Derivative
- ProfDawgstein
- · Replies 21 ·
Graduate Did Eddington overlook Hilbert and other early GR experts?
- Jolb
- · Replies 24 ·
Graduate Is Cosmological Time Dilation real?
- johne1618
- · Replies 45 ·
Undergrad Why is the speed of light constant regardless of the observer's motion?
- Mohamad&Issa
- · Replies 27 ·
Graduate Can photon momentum transfer between mirrors explain gravity?
- arnesinnema
- · Replies 7 ·
Graduate When is the 4-velocity useful?
- copernicus1
- · Replies 1 ·
Graduate Fermi-Walker transport and gyroscopes
- atyy
- · Replies 7 ·
Graduate Will photons fry an object falling into black hole?
- Ookke
- · Replies 4 ·
Graduate What's so special about light?
- copernicus1
- · Replies 6 ·
Graduate Atomic clocks in gravitational field
- Philosopha
- · Replies 138 ·
Graduate Ultraviolet Catastrophe of Gravity
- quantumfoam
- · Replies 11 ·
Graduate Did Einstein's Theory of Relativity Predict the Mass of Binary Stars?
- audioloop
- · Replies 4 ·
Graduate How Does General Relativity Affect Star Orbits Around Schwarzschild Black Holes?
- Philosophaie
- · Replies 10 ·
Graduate How does special relativity affect the Hall effect in conductors?
- cragar
- · Replies 4 ·
Graduate Doppler effects and relativity
- arnesinnema
- · Replies 1 ·
Graduate Inner and outer horizon of black hole
- sadegh4137
- · Replies 3 ·
Graduate Why can't I see fringes with eyepiece in my Michelson Interferometer?
- itsnaresh
- · Replies 2 ·
Graduate Maxwell Equations Lorentz Invariance - Notation
- ProfDawgstein
- · Replies 16 ·
Undergrad Why is 299,792,458 m/s the speed of light in a vacuum?
- Artorias
- · Replies 7 ·
Graduate How Do General Relativity Tensors and Their Indices Work?
- vidi
- · Replies 4 ·
Graduate Gravitational force of moving objects
- coolmatthew
- · Replies 7 ·
Graduate Proof Minkowski metric is invariant under Lorentz transformation
- SamRoss
- · Replies 4 ·
Graduate Metric tensor at the earth surface
- tm007
- · Replies 8 ·
Graduate Verifying invariance of speed c using relativistic velocity addition formulas
- littleHilbert
- · Replies 5 ·
Graduate Atom Emitting Photon: Energy Conservation
- 71GA
- · Replies 1 ·
Graduate Mechanism of the cosmological redshift
- Sunfire
- · Replies 23 ·
Graduate What if Earth crossed the event horizon of a supermassive black hole
- Ookke
- · Replies 28 ·
Graduate Matrix transpose and inverse in index notation
- mindarson
- · Replies 4 ·
Graduate Curvature of Manifolds: Understanding Relative Concepts
- Benjam:n
- · Replies 58 ·
Graduate Schwarzschild radius inside the body and transition to Newtonian gravity
- Philosophaie
- · Replies 2 ·
Graduate Decelerating a Constantly Accelerating Ship
- zeframcochrane
- · Replies 1 ·
Graduate Time Effects in Separate Frames of Ref.
- Qoz
- · Replies 2 ·
Graduate Can a Kerr black hole transport matter to another universe?
- acesuv
- · Replies 18 ·