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
Undergrad Time Dilation Data Sets: Get Graphs & Experiments Results
- iamBevan
- · Replies 2 ·
Graduate Denominator in cosmological constant term in Newtonian gravity
- Messenger
- · Replies 2 ·
Undergrad What is the shape of an electron's circular motion in a magnetic field?
- komodekork
- · Replies 6 ·
Graduate Derivation of Proper Time in General Relativity
- paultsui
- · Replies 5 ·
Undergrad Is force of gravity dependent on speed of one of the body?
- aditya23456
- · Replies 68 ·
Graduate How Does Observer Proximity Affect Clock Synchronization in Different Frames?
- mananvpanchal
- · Replies 29 ·
Graduate Effect of acceleration on shape and size of a light wave front
- MikeLizzi
- · Replies 27 ·
Graduate Exceed speed of light: always exceeded speed of light?
- Trinitiet
- · Replies 11 ·
Undergrad Einstein's Theory of Relativity - Is Light Speed Absolute?
- squareroot
- · Replies 2 ·
Graduate Understanding Ricci Tensor of FRW Universe: Equation 74 Explained
- psimeson
- · Replies 21 ·
Undergrad Can Light Travel Into the Future While We Explore Time Travel?
- c0ke
- · Replies 50 ·
Graduate Metric Connection from Geodesic Equation
- alex3
- · Replies 2 ·
Undergrad How can anyone know photons exist?
- korbbit
- · Replies 8 ·
Undergrad Speed of Light: Doubts and Confusions
- Ricardgomes
- · Replies 12 ·
Graduate One way speed of light measurement proposal
- ValenceE
- · Replies 56 ·
Graduate CPT (M?) symmetries in Kerr-Newman metric
- michael879
- · Replies 62 ·
Undergrad Einstein's Train Metaphor: Explained
- markf
- · Replies 6 ·
Graduate Non-diff theories of dynamical spacetime
- julian
- · Replies 4 ·
Graduate Apparent contradiction: Two charges moving parallel to each other
- jose 892
- · Replies 17 ·
Graduate Force of gravity in relativity
- SUROJL
- · Replies 2 ·
Graduate Would a relativistic ship really need much shielding?
- Albertgauss
- · Replies 1 ·
Graduate Gravitational Equivalent of Rindler Space
- Chestermiller
- · Replies 15 ·
Graduate References for a Lightspeed Ship
- Albertgauss
- · Replies 5 ·
Graduate Simultaneity of Events, Do I Have it Right?
- Drakkith
- · Replies 1 ·
Graduate Relativistic interpretation question?
- enotstrebor
- · Replies 17 ·
Graduate Time Dilation & Speed of Light: Evidence Needed
- kyeohti
- · Replies 5 ·
Graduate Calculating Muon Half-Life: Length Contraction vs Time Dilation
- mananvpanchal
- · Replies 2 ·
Graduate Is the Earth just a mass within a vast, curved space-time fabric?
- doey
- · Replies 2 ·
Graduate What would happen when Blackholes Collide?
- suchal
- · Replies 6 ·
Graduate Is Light's Mass Infinite at the Speed of Light?
- thedude36
- · Replies 14 ·
Undergrad Optics - Reflection of image from a moving mirror
- chaimc
- · Replies 36 ·
Graduate What do points on the manifold correspond to in reality?
- wacki
- · Replies 24 ·
Graduate How Are Muon Velocities Measured in Storage Rings?
- arindamsinha
- · Replies 7 ·
Undergrad Relativity Questions: Can Time Change Significantly in Space or Black Holes?
- drymetal
- · Replies 12 ·
Graduate Help understanding quadratic gravity
- graupner1000
- · Replies 2 ·
Graduate Extremely Basic Question Regarding Time Dilation
- Capngarrett
- · Replies 6 ·
Graduate Magnetism seems absolute despite being relativistic effect of electrostatics
- universal_101
- · Replies 156 ·
Graduate Special relativity and rest mass of a photon
- Lizwi
- · Replies 5 ·
Graduate Looking for Post on Uniform Acceleration in Relativity
- qraal
- · Replies 2 ·
Graduate Understanding Active Diffeomorphism in Einstein's Hole Argument Explained
- exponent137
- · Replies 13 ·
Graduate Magnetism as a relativistic effect
- cdot
- · Replies 5 ·
Undergrad Zero Gravity: ISS Orbit & Neil Degrasse Tyson
- kghosh
- · Replies 2 ·
Graduate Lorentz Vs. Einstein Who Wins?
- John232
- · Replies 71 ·
Undergrad Constant c and not its invariance.
- dpa
- · Replies 8 ·
Undergrad Please help me I want special relativity practice problems.
- Lizwi
- · Replies 5 ·
Graduate Einstein equation and particle jets
- Rami.Rom
- · Replies 11 ·
Graduate Length Contraction rearrangement
- mananvpanchal
- · Replies 77 ·
Graduate How Does Mass Relate to Time in Relativity Theory?
- Gabrell
- · Replies 1 ·
Graduate What is the problem with gravity?
- eiyaz
- · Replies 11 ·
Graduate Where does binding energy, or internal kinetic energy exist?
- mrspeedybob
- · Replies 3 ·
Undergrad Why does c have to be the speed of light
- drinkey
- · Replies 5 ·
Graduate Curved trails by motion of heavenly bodies in space
- dpa
- · Replies 3 ·
Graduate Why should the speed of light be the same in every frame of reference.
- Lizwi
- · Replies 4 ·
Graduate Two layered discs rotating at relativistic angular velocities
- Alexrose12345
- · Replies 6 ·
Undergrad Why is C Invariant? FORs Explained
- Adel Makram
- · Replies 18 ·
Graduate Explanation time dilation/duration by a force maybe
- digi99
- · Replies 7 ·
Graduate Plane wave in Minkowski space-time
- Wox
- · Replies 3 ·
Graduate Understanding the Origin of Gamma Factor in Lorentz Transformation
- Lizwi
- · Replies 1 ·
Graduate Center of momentum frame with photons?
- Darkmisc
- · Replies 1 ·
Graduate Hermann Minkowski's 1908 Law of Motion Explained
- snoopies622
- · Replies 8 ·
Undergrad Understanding Special Relativity: The Equation E = mc² Explained
- Lizwi
- · Replies 3 ·
Graduate Is the Norm of Four-Acceleration Always Equal to Proper Frame Acceleration?
- johnahn
- · Replies 2 ·
Graduate Understanding the Meaning of \oplus in Special Relativity
- Lizwi
- · Replies 1 ·
Graduate Is travel at almost infinite speed (FTL) actually possible?
- eohjelle
- · Replies 5 ·
Graduate Region the light never reaches the 'uniformly-accelerated' observer?
- johnahn
- · Replies 5 ·
Graduate Whats the physical meaning of a covariant derivative?
- faeriewhisper
- · Replies 7 ·
Undergrad Time dilation analogy. Please tell me if this is accurate.
- tybomb
- · Replies 2 ·
Graduate Unraveling the Mysteries of Special Relativity
- Cibek
- · Replies 17 ·
Graduate How Does Gravity Affect Light with Zero Mass?
- squareroot
- · Replies 6 ·
Graduate The No Hair Theorem and the Gravitational Field of Black Holes
- causalset
- · Replies 6 ·
Graduate How Does Relativistic Two-Way Momentum Appear to Different Observers?
- John232
- · Replies 45 ·
Graduate Why do we use the tangent and cotangent space?
- The1337gamer
- · Replies 13 ·
Graduate Galilean Invariance and the Special Principle of Relativity
- mangaroosh
- · Replies 1 ·
Graduate How to use S-metric to periastron precession of binary stars
- Vincentius
- · Replies 4 ·
Graduate Precession of Mercury: Understanding Direction & Newtonian Gravity
- grav-universe
- · Replies 9 ·
Graduate A good grad-level intorduction to general relativity
- taylrl3
- · Replies 3 ·
Graduate Should a neutrino be moving slightly slower than c?
- San K
- · Replies 3 ·
Graduate Electromagnetic tensor in cylindrical coordinates
- ngkamsengpeter
- · Replies 15 ·
Graduate Reframing the Special Theory of Relativity
- pawprint
- · Replies 18 ·
Graduate Deflection of light through a relativistic glass rod.
- yuiop
- · Replies 18 ·
Graduate Fingerprint of God type physics; what's meant and what qualifies?
- tybomb
- · Replies 10 ·
Graduate Measuring Frequency of Trans Planckian Blue Shift
- yuiop
- · Replies 1 ·
Undergrad Rest energy of a sample of pure matter
- jaketodd
- · Replies 11 ·
Graduate Why can't photons reverse annihilate ?
- Darkmisc
- · Replies 5 ·
Graduate General Relativity: Gravitational time dilation of photons and Fabric of Space
- prime axiom
- · Replies 5 ·
Graduate Doppler shift of a signal reflected in a mirror moving away from the observer.
- yuiop
- · Replies 4 ·
Graduate What are present problems with alcubierre drive?
- dpa
- · Replies 6 ·
Graduate Can a Tachyon Observe Light Traveling Faster Than Itself?
- dynkindiagram
- · Replies 21 ·
Undergrad A compressed spring has more mass
- bobsmith76
- · Replies 26 ·
Graduate Since space and time are relative shouldn't matter and energy be also?
- Gregory.gags
- · Replies 5 ·
Undergrad Why do electrons revolve so fast?
- kaushik_s
- · Replies 19 ·
Undergrad Understanding the Concept of Relativity: Unraveling the Confusion
- Jarfi
- · Replies 6 ·
Undergrad Why do you need to measure the speed of light in two directions?
- goodabouthood
- · Replies 120 ·
Graduate Constancy of c - second postulate
- mangaroosh
- · Replies 100 ·
Graduate What is the real meaning of lengh contraction of SR
- timeanalyser
- · Replies 10 ·
Undergrad Idea's for FTL and Space travel
- SayThatAgain
- · Replies 15 ·
Graduate Addition of Velocities: A photon emitted backwards
- wainker1
- · Replies 4 ·
Graduate Can We Pair Composition of Velocities with an Expanding Universe?
- Tibriel
- · Replies 2 ·
Graduate Basic question about TD and LC
- mananvpanchal
- · Replies 10 ·
Graduate Do Observers Experience Black Hole Event Horizons Differently?
- Gio83
- · Replies 11 ·