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 Theory of Relativity, "you can't tell which mass is moving"
- TheScienceOrca
- · Replies 10 ·
Graduate Possibly solved the metric without field equations
- grav-universe
- · Replies 11 ·
Graduate Relativity and the universal speed limit
- helpimagenius
- · Replies 12 ·
Graduate See Earth's Surface from the Past: Resolution Possible?
- GreenAce92
- · Replies 4 ·
Graduate Coordinate Charts vs Generalized Coordinates
- Dale
- · Replies 1 ·
Graduate Riemann curvature of a unit sphere
- McGravity
- · Replies 13 ·
Graduate Wavelength of light between rotating and stationary frames
- HALON
- · Replies 3 ·
Graduate Proving Variation of Metric K^{a b} with Killing Vector
- feiye
- · Replies 6 ·
Graduate Do different frames see different particle content in the Unruh effect?
- victorvmotti
- · Replies 1 ·
Graduate Contracted Christoffel Symbols
- space-time
- · Replies 2 ·
Graduate What if spacetime had two time dimensions?
- ChrisVer
- · Replies 3 ·
Graduate How Does Relativity Affect Observations of Approaching Spaceships?
- JanEnClaesen
- · Replies 2 ·
Graduate What is the discrepancy between proper time and observed time in this scenario?
- s0ft
- · Replies 11 ·
Graduate Can an object be both inside and outside a black hole at the same time?
- mppharmacy
- · Replies 6 ·
Graduate Why photons can't go any slower than the speed of light?
- KatamariDamacy
- · Replies 74 ·
Graduate Covariant Derivative Wrt Superscript Sign: Explained
- cr7einstein
- · Replies 2 ·
Graduate Particle Accelerators: Why Opposing Streams?
- Vacant
- · Replies 4 ·
Graduate Thought experiment of Special relativity
- ta66505477
- · Replies 6 ·
Graduate White Hole Theory: Evidence in Our Universe
- jppmd
- · Replies 1 ·
Graduate Aerodynamics/Special Relativity Analogy
- jlefevre76
- · Replies 6 ·
Graduate The Einstein Maxwell Action with sources
- center o bass
- · Replies 1 ·
Graduate Do Black Holes become visible at relativistic speeds?
- tionis
- · Replies 41 ·
Graduate What is the explanation for the null result of the Michelson-Morley experiment?
- teodorakis
- · Replies 15 ·
Graduate Proper Distance: What is Relativistic Distance?
- HALON
- · Replies 8 ·
Graduate 2 charges and the speed of light
- abro
- · Replies 13 ·
Graduate Lorentz transforming θ-dependent magnetic field with longitudinal distribution
- matt_crouch
- · Replies 4 ·
Graduate Final state conjecture in general relativity?
- 21joanna12
- · Replies 2 ·
Graduate What is the difference between GR and classical deflection of light by the Sun?
- bobie
- · Replies 21 ·
Graduate Why do more muons reach Earth if both reference frames see different clocks running slow?
- imsmooth
- · Replies 2 ·
Graduate On the question of experimental evdidence for 'real' SR time dilation?
- objecta99
- · Replies 16 ·
Graduate Why can't we determine our motion relative to spacetime?
- 21joanna12
- · Replies 8 ·
Graduate What is the role of the Earth's rotation in the Michelson-Morley experiment?
- abhilash.s
- · Replies 4 ·
Undergrad About time when you get closer to C
- sublime56
- · Replies 9 ·
Graduate Does length contraction affect the orbital path of a relativistic electron?
- neilparker62
- · Replies 3 ·
Graduate New Formula for Hydrogen Spectral Lines Wavelengths/Frequencies
- neilparker62
- · Replies 1 ·
Graduate (What is) Schwarzschild Radius and Potential Energy
- Narroo
- · Replies 2 ·
Graduate Does Time Truly Exist and Can We Measure It Without Clocks?
- EEngineer91
- · Replies 21 ·
Graduate Why do time dilation and length contraction diverge as speed approaches light?
- tonyxon22
- · Replies 6 ·
Graduate What Explains the Discrepancies in Expanding Galaxy Rates?
- mugginsjr
- · Replies 2 ·
Graduate Why don't quantum mechanics and relativity work together?
- Bluecom
- · Replies 3 ·
Graduate Can gravitational wave observatories detect man-made gravitational waves?
- gildomar
- · Replies 2 ·
Graduate Why does time dilation affect all clocks, not just light clocks?
- Deep_Thinker97
- · Replies 24 ·
Graduate Confusion on Einstein's Continuously Accelerating Rocket
- Schmonad
- · Replies 13 ·
Graduate How do maxwell's equations show that speed of light is constant
- Sreenath Skr
- · Replies 46 ·
Graduate Gravity Waves vs Elastic Sheet: Is the Analogy Productive?
- pervect
- · Replies 4 ·
Graduate Is spacetime fabric actually 2D or just a visual model?
- Natsirt
- · Replies 14 ·
Graduate Infinite Acceleration, Conservation of Energy, and Negative Mass
- Raze
- · Replies 1 ·
Graduate Gravity force: Isn't it just the shape of space?
- chris4642
- · Replies 3 ·
Graduate Series expansion tetrad Fermi coordinates
- WannabeNewton
- · Replies 3 ·
Graduate Is the Stress-Energy Tensor for a Scalar Field Phi Isotropic in FRW Metrics?
- erogard
- · Replies 7 ·
Graduate Time Dilation with Two Spacecraft
- Art_Vandelay
- · Replies 3 ·
Graduate A rotating Hot Dog about an inertial observer
- HALON
- · Replies 21 ·
Graduate Why does spacetime warp around mass if it doesn't have mass?
- Natsirt
- · Replies 13 ·
Graduate Does mass dissipate in a black hole?
- Bengey
- · Replies 6 ·
Graduate Causailty and the speed of light
- Mark_Laverty
- · Replies 16 ·
Graduate Difference between "g" and "g^ij"
- pabugeater
- · Replies 8 ·
High School What is boost supposed to mean?
- ChrisVer
- · Replies 4 ·
Graduate Does spacetime bend in discrete orbits like electron shells?
- sambogrub
- · Replies 1 ·
Graduate Is Time Dilation Relative in Special Relativity Experiments?
- objecta99
- · Replies 61 ·
Graduate Black Holes and escape velocity
- willoughby
- · Replies 17 ·
Graduate Does Einstein's General Theory of Relativity imply graviton?
- sujoykroy
- · Replies 3 ·
Graduate Does time dilation measure atomic vibrations rather than time itself?
- cperkins
- · Replies 12 ·
Graduate How does relativity define time (as a constant or not?)
- amarshalltd
- · Replies 41 ·
Graduate What do the Ricci tensor and scalar represent intuitively?
- andrewkirk
- · Replies 5 ·
Graduate A few questions about Einstein's field equations
- space-time
- · Replies 2 ·
Undergrad Why can't special relativity formulas apply to circular motion and magnetic force?
- ghost313
- · Replies 2 ·
Graduate Are There Exact Black Hole Solutions in Non-Asymptotically Flat Spacetimes?
- old dog
- · Replies 3 ·
Graduate Derivation of Velocity from Acceleration in Special Relativity
- ecastro
- · Replies 6 ·
Graduate What happens if there is no singularity inside a black hole?
- countzero1984
- · Replies 11 ·
Graduate 1st stress-energy tensor component for an electric field
- space-time
- · Replies 4 ·
Graduate Constructing the electromagnetic tensor from a four-potential
- coleman123
- · Replies 8 ·
Undergrad Relativity of velocity entails equal velocity
- objecta99
- · Replies 19 ·
Graduate What is a one form in general relativity?
- resurgance2001
- · Replies 1 ·
Undergrad Deriving the displacement of an object
- Solibelus
- · Replies 2 ·
Graduate Finding problem sets for learning general relativity from Dirac
- Ravi Mohan
- · Replies 3 ·
Graduate Does the Speed of Light Remain Constant in All Scenarios?
- etcota
- · Replies 3 ·
Graduate Gravitational Time Dilation and Age of Astronaut
- sangan
- · Replies 16 ·
High School What does spacetime curvature mean?
- Phy_enthusiast
- · Replies 13 ·
A Slower Speed of Light: MIT game visualizing SR effects
- guitarphysics
- · Replies 3 ·
Graduate Time dialation effect on observed speed of light
- rcgldr
- · Replies 2 ·
Graduate Inside event horizon, space and time are reversed. How, precisely ?
- nomadreid
- · Replies 9 ·
Graduate Is the B-theory of Time Presupposed by Relativity?
- kq6up
- · Replies 2 ·
Graduate Time dilation measurement and events
- fog37
- · Replies 7 ·
Graduate Poking someone falling into a black hole with a stick
- RabbitWho
- · Replies 8 ·
Graduate Can non-compact 4-dimensional spacetimes have a global tetrad?
- befj0001
- · Replies 8 ·
Graduate Exotic stress-energy tensor and causality
- Irigi
- · Replies 5 ·
Graduate Gravity and time and space translation asymmetry
- e2m2a
- · Replies 6 ·
Graduate Variation of the Einstein-Hilbert action in noncoordinate basis
- center o bass
- · Replies 4 ·
Undergrad Is gravity's speed really the speed of light?
- Veridian
- · Replies 10 ·
Graduate Three spaceships time dilation contradiction
- thetrice
- · Replies 7 ·
Graduate Does gravity affect subatomic matter and limit atomic motion?
- electronicmatt
- · Replies 26 ·
Graduate Why does light have a finite speed?
- adoion
- · Replies 46 ·
Graduate What is one way speed of light is about? Why is it said undefined?
- Sreenath Skr
- · Replies 8 ·
Graduate How Does Fermi-Walker Transport Behave in Rotating Space-Times?
- WannabeNewton
- · Replies 5 ·
Graduate Is the Metric in Spherical Coordinates Truly Flat?
- Mr-R
- · Replies 9 ·
Graduate Rod and slot paradox with non-collinear Lorentz boosts
- nixed
- · Replies 12 ·
Graduate Inaccuracy in the speed of light
- RyanXXVI
- · Replies 30 ·
Graduate Current 3-form, current density, current vector, etc.
- Geometry_dude
- · Replies 4 ·
Graduate Do different observers measure different stopping times for a moving train?
- adelmakram
- · Replies 94 ·
Graduate Can any pair of spacelike events be simultaneous?
- johnny_bohnny
- · Replies 16 ·