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 a Spinning Disc Appear at Near-Light Speeds?
- Oldfart
- · Replies 14 ·
Graduate Can an Odometer Measure Relativistic Distance?
- PAllen
- · Replies 53 ·
Graduate What is intuitively the source of the gravitational field?
- Quantum Immortal
- · Replies 28 ·
Graduate Camera on Spacecraft Moving Near Speed of Light
- JSGandora
- · Replies 2 ·
Graduate E=mc^2 in a gravitational field
- Agerhell
- · Replies 7 ·
Graduate Applications of the acceleration four-vector
- bcrowell
- · Replies 3 ·
Graduate Is Gravitomagnetism Covariant and Are There Any Alternative Approaches?
- Quantum Immortal
- · Replies 48 ·
Graduate Is energy of gravitational waves negative?
- Demystifier
- · Replies 7 ·
Undergrad Problems with Proper Length and Proper Time in SR
- Yosty22
- · Replies 4 ·
Graduate Invariant Spacetime Interval for Classical Spacetime
- AcidRainLiTE
- · Replies 4 ·
Graduate Hall's solution for Mercury's precession
- Shaw
- · Replies 2 ·
Graduate Stress energy tensor for fields
- pervect
- · Replies 5 ·
Graduate Potential energy and mass/energy equivalence
- VantagePoint72
- · Replies 4 ·
Graduate Why does light move at the same speed for all observers?
- AlfieD
- · Replies 18 ·
Graduate How does the definition of a second affect timekeeping on Earth and Mars?
- sydneybself
- · Replies 2 ·
Undergrad Gravitational Time Dilation: What is R in the Equation?
- ilikescience94
- · Replies 7 ·
Graduate Infinite Time Dilation at the Surface of a Black Hole?
- bhagwad
- · Replies 86 ·
Graduate Generic Local Electromagnetic field - MTW Ex 4.1
- TerryW
- · Replies 7 ·
Graduate Gravity and the curvature of space-time
- Baggins101
- · Replies 17 ·
Graduate The Belinfante_rosenfeld tensor
- Michael_1812
- · Replies 5 ·
Graduate Assuming only rest mass as source of gravity and real observations
- Quantum Immortal
- · Replies 29 ·
Graduate How Do You Transform Electromagnetic Dipole Moments When Boosting Orthogonally?
- kuecken
- · Replies 4 ·
Graduate Relativistic effects of a current carrying wire
- Jimmy87
- · Replies 7 ·
Graduate Is temperature an invariant in Special Relativity?
- yuiop
- · Replies 12 ·
Graduate Add Velocities: Equation for Spaceships Going 99%c
- ilikescience94
- · Replies 11 ·
Graduate Is pressure an invariant in Special Relativity?
- vinven7
- · Replies 27 ·
Graduate The faster you go the sooner you get there - maybe
- mschroth
- · Replies 21 ·
Access to Journal of Mathematical Physics 8.2 article
- odinphysics
- · Replies 2 ·
Graduate Light Clock Confusion in Special Relativity
- subzero0137
- · Replies 5 ·
Graduate Electromagnetic rod shortening
- Pierre007080
- · Replies 4 ·
Graduate Understanding Gravity: Mass, Size & Curvature
- IYIaster
- · Replies 7 ·
Graduate Kinematics of Relativity: Deriving Dilation Time
- gema
- · Replies 1 ·
Graduate Rod shortening of General Relativity
- Pierre007080
- · Replies 41 ·
Graduate Solve GR Equations with Regular Method
- quZz
- · Replies 1 ·
Graduate Radar distance Rindler observer
- WannabeNewton
- · Replies 12 ·
Graduate Who will see the light first O or O’?
- powermind
- · Replies 28 ·
Graduate Spinning Moving Objects: Angular and Linear Momentum
- alvarogz
- · Replies 8 ·
Graduate Is there an aether to determine if an object rotates?
- greypilgrim
- · Replies 80 ·
Graduate Breaking the speed of light limit.
- dratone
- · Replies 5 ·
Graduate Why does Earth's sphericity break the equivalence principle?
- Quarlep
- · Replies 41 ·
Graduate Why is the invariance of light a problem?
- bobie
- · Replies 36 ·
Graduate Does a Photon See a 2D Universe?
- StueyA
- · Replies 9 ·
Graduate Twisting of a rotating cylinder
- WannabeNewton
- · Replies 22 ·
Graduate Could High speeds create a black hole?
- ilikescience94
- · Replies 17 ·
Graduate Curved Spacetime & Inertial Motion in General Relativity
- TrickyDicky
- · Replies 17 ·
Graduate Reading on a scale inside a train
- bcrowell
- · Replies 10 ·
Graduate The notion of weight in relativity
- Markus Hanke
- · Replies 25 ·
Graduate Can relativistic mass be a useful concept
- Dadface
- · Replies 22 ·
Graduate Understanding Relativistic Velocities in a Simple Two Body System
- leehufford
- · Replies 17 ·
Graduate What happens when you fall in an evaporating black hole?
- Quantum Immortal
- · Replies 4 ·
Graduate Annihilation of electron positron pair
- devang2
- · Replies 6 ·
Graduate Simple special relativity mistake - find i can't
- n3xtras
- · Replies 5 ·
Undergrad Everyday applications of relativity
- resurgance2001
- · Replies 13 ·
Graduate How to construct stress-energy tensor for a system?
- ngkamsengpeter
- · Replies 15 ·
Graduate Transformation of the metric tensor from polar to cartesian coords
- mokrunka
- · Replies 5 ·
Undergrad Reason for a black hole's gravity?
- Yashbhatt
- · Replies 12 ·
Undergrad What is the energy of a black hole?
- Quarlep
- · Replies 17 ·
Graduate The Unruh Effect and Expansion of the Universe
- JPBenowitz
- · Replies 3 ·
Undergrad Why things cant go speed of light?
- Quarlep
- · Replies 7 ·
Graduate Kretschmann Scalar: Physical Significance & Invariants of Riemann Curvature
- Markus Hanke
- · Replies 4 ·
Undergrad Length Contraction Affect on Mass: Physics Explained
- NotAMethDealer
- · Replies 1 ·
Graduate What is the Symmetry of the Ricci Tensor?
- ProfDawgstein
- · Replies 7 ·
Graduate Why is the speed of light the same for all observers?
- rahulgarg12342
- · Replies 42 ·
Graduate Stress-energy tensor & mass term in metric
- gabeeisenstei
- · Replies 3 ·
Graduate Einstein's Theory of Relativity: Can Wormholes Exist?
- Yosty22
- · Replies 2 ·
Graduate What is ds² on a rotating disk?
- exmarine
- · Replies 6 ·
Graduate Can physics describe a massive photon?
- ChrisVer
- · Replies 18 ·
Graduate Gravitational time dilation for a spherical body of finite radius
- GeorgeDishman
- · Replies 3 ·
Graduate Gravitational Waves: Experiments to Produce and Observe
- JF131
- · Replies 1 ·
Graduate Magnetic field of straight wire, charges travels at relativistic speed
- nos
- · Replies 4 ·
Graduate Wormholes with a different gravitational potential at each end
- patfada
- · Replies 4 ·
Graduate Square-Integrable Functions in Curved Spacetime
- stevendaryl
- · Replies 3 ·
Graduate Maxwell's Distribution: Integrating Over Velocity Spectrum
- ChrisVer
- · Replies 2 ·
Graduate The affect of spacetime curvatures on the speed of light
- JF131
- · Replies 24 ·
Graduate Stress-Energy Tensor from Lagrangian: Technical Question II
- maykot
- · Replies 6 ·
Graduate The time for 2 light pulses in a moving vehicle
- powermind
- · Replies 42 ·
Graduate Relationship between electricity, magnetism, and relativity
- hideelo
- · Replies 9 ·
Graduate Implications of Einstein's Theories
- JimiJams
- · Replies 69 ·
Graduate Schwarzschild Solution for Planetary Motion: Find x'i from xi
- Philosophaie
- · Replies 1 ·
Graduate Dimensions of Contraction due to Gravity
- DC0
- · Replies 6 ·
Graduate Is there something like ds'^2=ds^2 in GR?
- cuallito
- · Replies 22 ·
Graduate The Classical Path, QM Path Integrals and Paths in Curved Spacetime
- MWBratton
- · Replies 7 ·
Graduate Charge/mass ratio of moving particles (SR)
- tartaneto
- · Replies 9 ·
Graduate Perspective on Relativity and Length Contraction
- ZZ Specs
- · Replies 200 ·
Graduate Special relativity and photons
- ViolentCorpse
- · Replies 15 ·
Undergrad Time dilation to go a specific distance
- sparks97
- · Replies 6 ·
Graduate Einstein tensor fully written out
- greypilgrim
- · Replies 3 ·
Graduate A graphical explanation of Special Relativity
- ghwellsjr
- · Replies 5 ·
Graduate Understanding Relativity: The Effects of Relative Motion and Mass
- Trojan666ru
- · Replies 4 ·
Graduate Parallelism between a vector and a covector
- bcrowell
- · Replies 9 ·
Graduate Rephrasing the train and platform thought experiment
- ScottTracy
- · Replies 11 ·
Graduate Adding a total derivative to the Lagrangian
- JPaquim
- · Replies 4 ·
Graduate Single equation for space-time curvature?
- PhysicsStuff
- · Replies 30 ·
Graduate How Do Contradictory Metrics Align with GR Field Equations?
- StateOfTheEqn
- · Replies 99 ·
Graduate How Does Effective Inertia Relate to Mass and Energy in Special Relativity?
- rpthomps
- · Replies 9 ·
The book: Spacetime Physics (Taylor - Wheeler) - missing solutions
- tomas.teicher
- · Replies 1 ·
Graduate Time Dilation Effects of Hypothetical Zero Gravity Pocket
- NMLevesque
- · Replies 14 ·
Graduate Gravitational wave solution boundary conditions
- center o bass
- · Replies 2 ·
Undergrad Velocities of objects moving towards and away from each other
- ilikescience94
- · Replies 3 ·
Graduate Lorentz boost matrix in terms of four-velocity
- CarlosMarti12
- · Replies 6 ·