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 Radial Null Geodesic: Solving the Equation
- Ichimaru
- · Replies 1 ·
Graduate The present epoch in FRW metric
- victorvmotti
- · Replies 4 ·
Undergrad Twins Paradox: Why One Twin is Older When Reunited
- Moris526
- · Replies 63 ·
Graduate The threshold of general relativity gravity
- victorvmotti
- · Replies 9 ·
Undergrad Moving fairground light, thought experiment
- delsaber8
- · Replies 15 ·
Graduate How does General Relativity contradict quantum mechanics?
- lizzie96
- · Replies 2 ·
Graduate Need Clarification for time dilation effects
- NATURE.M
- · Replies 6 ·
Graduate A question about v appearing in the transformation equations in SR
- ftr
- · Replies 21 ·
Graduate Understanding the Schwarzschild Coordinate r in Spherical Symmetric Spacetime
- Vrbic
- · Replies 5 ·
Graduate Time Dependent Exact Solutions of Einstein's Equations
- Vrbic
- · Replies 6 ·
Graduate How to determine real inertia without 4 vectors?
- Dadface
- · Replies 37 ·
Graduate Magnetic Fields & Space-Time: Can They Bend?
- schonovic
- · Replies 1 ·
Graduate Radar distance on DrGreg's Rindler chart?
- Jorrie
- · Replies 16 ·
Graduate Help understanding minkowski tensor and indices
- decerto
- · Replies 5 ·
Graduate Lorentz, waves, Einstein and bodies: transformations +/- gamma
- ANvH
- · Replies 5 ·
Graduate Time dilation, length contraction and relative simultaneity on Earth
- analyst5
- · Replies 8 ·
Graduate Calculating Distances in Special Relativity - Bob's Question
- bobbles22
- · Replies 3 ·
Graduate Velocity in Proper Time: Relativistic Acceleration Equation
- nomadreid
- · Replies 2 ·
Graduate Relativity & Fast-Moving Objects: Does Time Slow Down?
- Patriciamsv
- · Replies 1 ·
Graduate What is the significance of the velocity term in the Alcubierre metric?
- redstone
- · Replies 2 ·
Graduate Objects Falling in General Relativity
- d-richard
- · Replies 3 ·
Undergrad Time dilation, is this correct?
- travis51
- · Replies 10 ·
Graduate How do inertial frames centered on a black hole's horizon work?
- PeterDonis
- · Replies 91 ·
Graduate Einstein Eq. & Stiffness of Spacetime
- Sonderval
- · Replies 7 ·
Graduate Can Gravity Exist in an Inertial Frame?
- analyst5
- · Replies 3 ·
Graduate Could there be an absolute 'state of reference?'
- mrnike992
- · Replies 135 ·
Graduate Does the expanding Universe have a knowable center?
- gymjim
- · Replies 5 ·
Graduate Metricity Equation: ∇_{μ}g_{αβ}=0, ∇_{μ}g^αβ ≠ 0?
- kuecken
- · Replies 4 ·
Graduate Would we feel the effects of a strong gravitational wave?
- DPRK
- · Replies 12 ·
Graduate Why Use Tensors in GR: Benefits & Potential Pitfalls
- ta66505477
- · Replies 12 ·
Graduate Why would I think I'm not moving?
- Layman
- · Replies 47 ·
Graduate Density terms in the stress-energy momentum tensor
- space-time
- · Replies 4 ·
Graduate Intuitive understanding of Thomas precession
- yuiop
- · Replies 70 ·
Graduate Understanding the Ricci Curvature Tensor in Einstein's Field Equations
- space-time
- · Replies 7 ·
Graduate Gravitational Binding Energy in GR
- StateOfTheEqn
- · Replies 4 ·
Graduate Too Simple & Short Solution of Twin Paradox
- vidwansoni
- · Replies 11 ·
Graduate Definition of One-Forms & Their Action | Clarifying a Concept
- maverick280857
- · Replies 2 ·
Graduate How Does Mass Affect the Fabric of Space-Time?
- Paramedic_Nerd
- · Replies 3 ·
Graduate Differences between different simultaneity conventions
- analyst5
- · Replies 7 ·
Graduate Can Time Dilation Prevent Crushing at c?
- God Plays Dice
- · Replies 15 ·
Graduate Relativistic Compressor Paradox
- jartsa
- · Replies 3 ·
Graduate General parameterisation of the geodesic equation
- victorvmotti
- · Replies 26 ·
Graduate Absolute time, local time, planck time
- sloughter
- · Replies 5 ·
Graduate If stress vanishes in one frame, it vanishes in all frames, but
- bcrowell
- · Replies 7 ·
Graduate How Does Velocity Addition Impact Time Dilation in Rotating Objects?
- analyst5
- · Replies 3 ·
Graduate Understanding Inflation: Effects of Spontaneous Symmetry Breaking on Gravity
- stevendaryl
- · Replies 1 ·
Graduate Global Coord Atlas Universe: GR Coord Charts, Speed Light
- berra
- · Replies 3 ·
Graduate Is Schwarzschild spacetime parallelizable?
- TrickyDicky
- · Replies 6 ·
Graduate Where Does Entropy Go in Inertial Frame During Relativistic Refrigeration?
- jartsa
- · Replies 24 ·
Graduate What Are Rosen Coordinates in Gravitational Wave Analysis?
- CoordinatesPLZ
- · Replies 5 ·
Graduate Change of frames in relativity
- johnny_bohnny
- · Replies 41 ·
Graduate Gravitational Energy: Infinite Potential & Its Impact on Nature
- pprajwal
- · Replies 9 ·
Graduate How Does the Loaf of Bread Model Explain Space-Time Perception?
- Starstuffer
- · Replies 10 ·
Graduate Can baseballs truly synchronize clocks ?
- Edd
- · Replies 1 ·
Graduate Dirac equation, curved space time
- pleasehelpmeno
- · Replies 8 ·
Graduate Franklin, Lorentz contraction, Bell's spaceships, and
- bcrowell
- · Replies 15 ·
Graduate Simultaneity & Digital Clockfaces: Understanding Relativistic Time Syncing
- dface
- · Replies 8 ·
Graduate Levi-Civita connection and pseudoRiemannian metric
- TrickyDicky
- · Replies 94 ·
Graduate The Energy-momentum formula considering internal energy
- Sunfire
- · Replies 33 ·
Graduate Christofell Symbols: Derivation in Schutz & Wald
- HomogenousCow
- · Replies 1 ·
Undergrad How does GPS receiver calculate time delay?
- aadarsh9
- · Replies 10 ·
Graduate Light travelling towards a black hole
- jamesbolt
- · Replies 1 ·
Graduate Does Accelerating Mass Radiate Gravitational Waves and Lose Energy?
- adamp121
- · Replies 3 ·
Graduate Can we escape a black hole's event horizon using another?
- adrian_m
- · Replies 1 ·
Undergrad Is the fabric of space time 2d or 3d
- 6thgrader
- · Replies 1 ·
Graduate Two beams of light traveling in opposite directions=2c
- abbott287
- · Replies 13 ·
Graduate Futurisitic Understanding of Space Time: Escaping a Black Hole?
- 6thgrader
- · Replies 3 ·
Graduate Two objects moving towards each other.
- travis51
- · Replies 4 ·
Graduate Does gravity turn time into space?
- Karl Coryat
- · Replies 1 ·
Graduate Energy and proper time (not relativity)
- dapias09
- · Replies 3 ·
Graduate Simultaneity, Rotation & Gravity: Agree?
- yuiop
- · Replies 2 ·
Graduate Orthogonal space-like vectors.
- Felpudio
- · Replies 1 ·
Graduate How Does Velocity Affect Time, Length, and Mass in Special Relativity?
- cooper607
- · Replies 9 ·
Graduate Can we calculate kinetic energy by multiplying 1/2mv^2 by 1.15 at C/2 speed?
- bobie
- · Replies 20 ·
Graduate Rotating frames desynchronization
- johnny_bohnny
- · Replies 61 ·
Graduate Can Rotating Clocks on a Rim Be Synchronized Using Simultaneity Principles?
- JVNY
- · Replies 69 ·
Graduate Time Dilation Between Fixed Point & Geostationary Orbit: SR & Circular Motion
- rede96
- · Replies 17 ·
Graduate Relativity and Black Hole Question
- Salamon
- · Replies 52 ·
Graduate EFE Metric: Find a Link to the Full Expansion
- HomogenousCow
- · Replies 6 ·
Graduate Why Does Light Experience a Large Shapiro Delay Near Black Holes?
- jartsa
- · Replies 15 ·
Graduate Help Understanding Black Hole Theories
- sciencegem
- · Replies 2 ·
Graduate Is the Traveling Signal Paradox Real or Just a Misunderstanding of Relativity?
- nearc
- · Replies 15 ·
Graduate History of building of general relativity
- vanger
- · Replies 8 ·
Graduate Parity conservation and the Field-Strength Tensor
- PhilDSP
- · Replies 7 ·
Graduate Could the Observer's Absolute Rest Explain the Constancy of Light Speed?
- rajeshmarndi
- · Replies 15 ·
Graduate Is Virtual Length Contraction Influenced by Changes in Refractive Index?
- ANvH
- · Replies 6 ·
Graduate Real examples of the space-time interval
- geordief
- · Replies 10 ·
Graduate Conservation of 3-Momentum: Noether’s Theorem
- dipole
- · Replies 1 ·
Graduate Minkowski normal v. Euclidean normal
- flyinjoe
- · Replies 7 ·
Graduate Gamma plus or minus gamma-beta, two different outcomes?
- ANvH
- · Replies 6 ·
Graduate Initial Data for General Relativity: EFE
- HomogenousCow
- · Replies 1 ·
Undergrad How do Gravity and Acceleration affect Clocks?
- cjackson
- · Replies 1 ·
Graduate Questioning Light Speed: An Advanced Physics Mystery
- wilders
- · Replies 1 ·
Graduate Bianchi identity with F^ab F^cd
- JustinLevy
- · Replies 12 ·
Graduate Huggins Displacement Theory and Retrocausality
- johne1618
- · Replies 1 ·
Graduate Your preferred way of explaining this point about the twin paradox?
- bcrowell
- · Replies 20 ·
Graduate Can Particles Travel Backwards in Time if They Exceed the Speed of Light?
- Salamon
- · Replies 7 ·
Graduate How does magnetic moment transform due to relativity?
- idea2000
- · Replies 2 ·
Graduate Derivation of formula for time dilation
- wpan
- · Replies 11 ·
Graduate XY Plane with Z as Time: Big Bang?
- sloughter
- · Replies 4 ·