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 in 2 spatial dimensions
- cam875
- · Replies 3 ·
Graduate Does Light's Speed Depend on the Motion of Its Source?
- bernhard.rothenstein
- · Replies 17 ·
Undergrad What does dt' = γdt mean about who measures longer time intervals?
- Master J
- · Replies 1 ·
Graduate How does gravity get away from a source so it can pull back to the source?
- GordonDengyo
- · Replies 11 ·
Graduate Gravity Deflecting Light and Gravity Lensing
- haytil
- · Replies 1 ·
Graduate Object Approaching Event Horizon: Why Does it Slow Down?
- Ascenxion
- · Replies 1 ·
OriginalPapersWhere can I find Einstein's original handwritten papers?
- jefswat
- · Replies 4 ·
Undergrad Light shone in a train bouncing off mirrors
- JustinTime
- · Replies 179 ·
Graduate Expansion of Universe and Time dilation
- earamsey
- · Replies 23 ·
Graduate Understanding Parallel Transport and its Implications for Coordinate Systems
- madness
- · Replies 20 ·
Graduate Galileo's relativistic postulate question
- bernhard.rothenstein
- · Replies 5 ·
Graduate How Does the Twin Paradox Illustrate Time Dilation and Aging Differences?
- Compaq
- · Replies 1 ·
High School Is Exploding the Atom Possible?
- jimwharton
- · Replies 1 ·
Graduate Electron and photons time of flight
- lalbatros
- · Replies 4 ·
Graduate Can a SLAC calorimetric test distinguish special relativity from Galilean relativity?
- lalbatros
- · Replies 6 ·
Graduate What is the significance of v=0 in Eddington-Finkelstein/Kerr coordinates?
- stevebd1
- · Replies 2 ·
Graduate What is space if mass can curve it?
- earamsey
- · Replies 7 ·
Graduate Potential to rectify an error in wikipedia
- neopolitan
- · Replies 1 ·
Graduate GR Point Masses: Seeking Help from Relativists
- humanino
- · Replies 10 ·
Graduate Relativity of simultaneity in Greene's Fabric of the Cosmos
- hgsouth
- · Replies 5 ·
Graduate Confusion about relativistic fluids
- Marco Melo
- · Replies 2 ·
Undergrad Feedback on my Simple Wikipedia article about the Lorentz factor
- daytripper
- · Replies 10 ·
Graduate How Does Speed Affect Laser Light in a Moving Space Probe?
- mrzero
- · Replies 1 ·
Graduate Do mirrors show simultaneous events in the mirror frame?
- daytripper
- · Replies 10 ·
Graduate Black Holes, Quantum Gravity and the Curvature of spacetime
- juan_rod
- · Replies 34 ·
Graduate Validity of the Doppler shift formula?
- bernhard.rothenstein
- · Replies 9 ·
Graduate Is the Time Dilation Formula Incorrect?
- NordicLight
- · Replies 12 ·
Graduate Minkowski spacetime for philosophy majors
- mrbeddow
- · Replies 4 ·
Graduate Lorentz contraction at relativistic speeds
- TonyP
- · Replies 1 ·
Graduate SR Inertial Frame Scenario Confusion
- werewolf
- · Replies 3 ·
Graduate Can gravitational lensing let us observe Earth's past through reflected light?
- SW VandeCarr
- · Replies 36 ·
Graduate What are some open questions in general relativity for microscopic objects?
- Dmitry67
- · Replies 2 ·
Graduate Black Hole Entropy: Is S=A/4 robust ?
- Pacopag
- · Replies 1 ·
Graduate Is Einstein's Gravity Theory Historically Accurate?
- Nickelodeon
- · Replies 3 ·
Graduate Does Curved Spacetime Affect Atoms?
- Karl G.
- · Replies 2 ·
Graduate Four-velocity and the constant speed through spacetime interpretation
- NanakiXIII
- · Replies 2 ·
Undergrad What are some everyday applications of relativity in modern technology?
- mintparasol
- · Replies 3 ·
Graduate Gravitational Time Dilation and the Galaxy Rotation Curve
- dewclaw
- · Replies 6 ·
Graduate Space-Time gravitational field problem
- Foxdove
- · Replies 5 ·
Graduate How does Curvature Relate to 'Gravitation'?
- Karl G.
- · Replies 5 ·
Graduate What is the proper time interval in special relativity?
- Rasalhague
- · Replies 5 ·
Graduate Is there such a thing as at rest ?
- ChrisPeace
- · Replies 38 ·
Undergrad Why one cannot push light but just in the normal direction to the ray?
- arithmetic
- · Replies 14 ·
Graduate Special relativity and the Photon
- discord73
- · Replies 3 ·
Graduate Mass-inflation in rotating/charged black holes
- stevebd1
- · Replies 3 ·
Undergrad Would You Experience Weightlessness in a Free-Falling Elevator?
- Jacksondont
- · Replies 19 ·
Graduate Volume of Dimension reduced due to gravitation
- benk99nenm312
- · Replies 10 ·
Graduate Why is Light Always Linked to Time in Relativity?
- 31moppie
- · Replies 7 ·
Graduate Length contraction and magnetic field
- Per Oni
- · Replies 5 ·
Graduate Homogeneity of Space and Time vs Gravity
- LarryS
- · Replies 1 ·
Undergrad Gravity: Is There an Equation?
- scupydog
- · Replies 1 ·
Graduate Does inertia arise from resistance to changes in time dilation?
- 1bayouboy
- · Replies 6 ·
High School E=mc^2 and is it possible E/c^2=m
- arora-dhan
- · Replies 11 ·
Graduate Gravitational force vs space time fabric
- blade_chong
- · Replies 2 ·
Graduate A Challenge to Special Relativity?
- Curious6
- · Replies 55 ·
Graduate Particle disappearing from view if it exceeds c
- NanakiXIII
- · Replies 2 ·
Graduate Why should A change its view on the length of B ship during relative motion?
- Saw
- · Replies 42 ·
Graduate Is there a formula for the shrinking of the universe due to object curvature?
- benk99nenm312
- · Replies 3 ·
Graduate What's the curvature of spacetime describe?
- feynmann
- · Replies 10 ·
Graduate Spacetime we are able to distinguish between different inertial frames
- captain
- · Replies 2 ·
Graduate Surely fault about relativistic momentum
- BarbaraDav
- · Replies 1 ·
Graduate Why restrict Lorentz basis to proper transformations
- parton
- · Replies 4 ·
Graduate What is the jerk four-vector and how is it defined?
- off-diagonal
- · Replies 3 ·
Graduate How much does gravitational lensing distort what we observe?
- Lexus Dominus
- · Replies 1 ·
Graduate Is Mass a Relative Concept in Physics?
- derek.basler
- · Replies 13 ·
Graduate What Happens to a Photon's 4 Momentum After a Lorentz Boost?
- curiouserand.
- · Replies 5 ·
Graduate Does the Thim experiment show a relativistic Doppler shift?
- lalbatros
- · Replies 11 ·
Graduate Understanding Special Relativity
- boswell
- · Replies 10 ·
Graduate Can time dilation from speed and gravity combine to reverse time?
- z0rn dawg
- · Replies 10 ·
Graduate Extrapolating Schwarzschild exterior coordinate
- Jonathan Scott
- · Replies 11 ·
Graduate Kretschmann Scalar for Rotating Black Holes: Curvature Invariant
- stevebd1
- · Replies 6 ·
Graduate Varying timing of eclipses of Algol and constant speed of light?
- O Great One
- · Replies 6 ·
Graduate Can You Be Both Dead and Alive When Traveling at Light Speed?
- 3CKPilot
- · Replies 8 ·
Graduate Is Electromagnetism Relative and Does it Create a Paradox in Moving Frames?
- Charlie G
- · Replies 3 ·
Undergrad Light Speed Relativity: A Puzzling Question
- Nel
- · Replies 3 ·
Graduate Units of length and time in MeV?
- philip041
- · Replies 11 ·
Undergrad Spacetime and how wormholes relate to it
- Dr.Boo
- · Replies 3 ·
Graduate EPR experiments imply STR not correct?
- zenith8
- · Replies 93 ·
Graduate Embedding curved spacetime in higher-d flat spacetime
- nickyrtr
- · Replies 9 ·
Graduate Black Hole and the event horizon
- Charlie G
- · Replies 4 ·
Graduate Matter and Antimatter - Gravity
- Keijo
- · Replies 3 ·
Undergrad Gravitational Lensing Deflection angle
- Jrod99
- · Replies 2 ·
Graduate Time dilation in de Sitter Special Relativity
- Parvulus
- · Replies 2 ·
Graduate Collapse to a ring singularity
- stevebd1
- · Replies 1 ·
Graduate Why are covariant Maxwell equations invariant only under Lorentz transformations?
- kron
- · Replies 6 ·
Graduate Finding the ring-singularity of a rotating black hole
- TheMan112
- · Replies 7 ·
How does mass affect wormhole travel in the Déjà Vu film?
- Chaste
- · Replies 7 ·
Graduate Kinetic and dynamic twin effect
- lalbatros
- · Replies 32 ·
Graduate Lorentz-Fitzgerald Contraction or Time Dilation?
- Tlatoani
- · Replies 7 ·
Graduate Is There Evidence for Electric Field Contraction in Space?
- jefswat
- · Replies 9 ·
Graduate Operational definition of four velocity
- BarbaraDav
- · Replies 4 ·
Graduate SR is that nothing can move faster than light
- nieuwenhuizen
- · Replies 3 ·
Graduate How does curved spacetime result in an effective gravitational force?
- morenogabr
- · Replies 32 ·
Graduate Is Gravitational Acceleration a Violation of Space Curvature Theory?
- crx
- · Replies 25 ·
Graduate Ratio of reduced circumference to actual radius in a black hole
- CJames
- · Replies 7 ·
Graduate Cosmic microwave background and a reference frame
- BarbaraDav
- · Replies 5 ·
Graduate Verifying killing vectors on S^2 with the killing equation
- negru
- · Replies 11 ·
Graduate A few questions from introduction to sr by rindler.
- MathematicalPhysicist
- · Replies 29 ·
Undergrad How Do GR and SR Influence Modern Technologies Beyond Nuclear Energy?
- Dadface
- · Replies 6 ·
Graduate Calculating Stress Energy Tensor for Rotating Bodies
- fobos3
- · Replies 2 ·