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 Time Dilation -light vs. spaceship
- pootette
- · Replies 2 ·
Graduate SR derived solely from one postulate
- grav-universe
- · Replies 74 ·
Graduate Redshift Factor in a Symptotic Stationary Flat Space
- johnstrass
- · Replies 1 ·
Graduate Isotropic inhomogeneous metric
- ridox
- · Replies 3 ·
Graduate Is gravity a byproduct of the rate of time passage in general relativity?
- bobin
- · Replies 1 ·
Graduate Interpreting g(f u\otimes u + v\otimes v) with Scalar Field f
- barnflakes
- · Replies 10 ·
Graduate Twin paradox in a closed universe
- Daniel42
- · Replies 80 ·
Graduate Dot product of 4-force and 4-velocity
- Rasalhague
- · Replies 5 ·
Undergrad Einsteins light beam Lets go for a ride again
- tiger51
- · Replies 3 ·
Graduate Time dilation = something is wrong
- giordanobruno
- · Replies 20 ·
Undergrad Length Contraction Documentary
- neilabuel
- · Replies 11 ·
Graduate Tests for Radiative Character of Spacetimes
- bcrowell
- · Replies 2 ·
Graduate Why is electron energy after collision √(P_e²c² + m_e²c⁴)?
- mess1n
- · Replies 8 ·
Graduate Finding the Metric of a Surface
- Ryanonymous
- · Replies 3 ·
Graduate Is Gravity Enlarged at Small Distances?
- exponent137
- · Replies 4 ·
Undergrad Dispute over basic relativity question
- m.e.t.a.
- · Replies 13 ·
Graduate Can you get accurate results from general relativity without curved spacetime?
- sharma_satdev
- · Replies 3 ·
Graduate Counter intuitivity and relativity
- Grimble
- · Replies 29 ·
Graduate Transforming force with two velocity components in special relativity
- N-Gin
- · Replies 6 ·
Graduate Do hyperbolic worldlines in relativity stay inside event horizons?
- Altabeh
- · Replies 5 ·
Graduate Einstein metric and Space-time metric
- wam_mi
- · Replies 1 ·
Undergrad What Are Higher Dimensions and How Do They Affect Our Everyday Lives?
- wolram
- · Replies 7 ·
Graduate Geometry of minkowski spacetime
- Truth_Seeker
- · Replies 4 ·
Time Travel book recommendations
- lemonylimes
- · Replies 30 ·
Undergrad Mass-Light Conversion: How Much is Lost?
- Astra-Rudra
- · Replies 8 ·
Graduate How can light travel through space and time if time stops at the speed of light?
- binbots
- · Replies 3 ·
Undergrad Will time stop if we were able to go as fast as the speed of light?
- altairz
- · Replies 13 ·
Graduate Can Chromatic Aberration arise from Gravitational Lensing?
- JessicaNY
- · Replies 5 ·
Undergrad Why did Einstein combine space and time?
- binbots
- · Replies 5 ·
Undergrad Travelling faster than the speed of light?
- Aero_Marty
- · Replies 2 ·
Graduate Monkey Hunter demonstration in GR
- flatmaster
- · Replies 3 ·
Graduate Is special relativistic time dilation real or just apparent?
- cbd1
- · Replies 15 ·
Graduate The 4-D Laplace equation and wave equation
- member 141513
- · Replies 1 ·
Graduate Extending the energy-momentum equation with relativistic mass
- dimsun
- · Replies 22 ·
Graduate How Do Invariant Hyperbolae Relate to Spacetime Distances?
- snoopies622
- · Replies 6 ·
Graduate GR derived using spinning ride example?
- Silverrida
- · Replies 1 ·
Graduate Why don't relativity cranks dispute Einstein's light flash thought experiment?
- exmarine
- · Replies 27 ·
Graduate Does measuring the age of the universe result in objective observation?
- MattAndMatthe
- · Replies 2 ·
Graduate Tidal forces inside BH in horizontal direction
- Dmitry67
- · Replies 6 ·
Graduate Does general relativity predict time slowing from the Big Bang onward?
- RJ Emery
- · Replies 5 ·
Graduate Lorentz Contraction Circular Motion
- Eldgar
- · Replies 145 ·
Graduate Does gravity do work in general relativity?
- FredMadison
- · Replies 8 ·
Graduate Real Lorentz–FitzGerald contraction
- heldervelez
- · Replies 85 ·
Graduate Newton's universal law of gravitation
- Orion1
- · Replies 3 ·
Graduate Metric light distance and gravitation
- madhatter106
- · Replies 3 ·
Graduate Is SR-allowable time travel future-only ?
- MattAndMatthe
- · Replies 36 ·
Graduate Gravitational force of one nucleon
- exponent137
- · Replies 1 ·
Graduate Force Law Transformation: Implications for Hooke's Law?
- GRDixon
- · Replies 2 ·
Graduate Does increasing temperature also increase mass?
- madhatter106
- · Replies 5 ·
Graduate STRACT: Inertial Frames in Special and General Relativity
- madness
- · Replies 62 ·
Undergrad Is Time Slower or Faster Inside a Moving Train?
- matdoya
- · Replies 5 ·
Undergrad Progression of time when velocity is very high
- Epic Sandwich
- · Replies 1 ·
Graduate Understanding Time Dilation and the Speed of Light in Particle Colliders
- mcjosep
- · Replies 4 ·
Graduate E Field and Field Transformations
- GRDixon
- · Replies 5 ·
Graduate Light speed measured from distance
- Calimero
- · Replies 1 ·
High School Why Does a Bullet Fired from a Bullet Train Appear to Travel at 0 MPH?
- bondinthesand
- · Replies 1 ·
Graduate Can you go back in time by bending spacetime, if time is an illusion?
- CosmicCrunch
- · Replies 4 ·
Graduate Do Jack and Jill Age Differently in Special Relativity Scenarios?
- GRDixon
- · Replies 22 ·
Graduate Why don't you feel older when traveling at the speed of light?
- noblegas
- · Replies 1 ·
Graduate Does the Ether Theory Explain Sidereal Fluctuations in Atomic Clocks?
- wisp
- · Replies 3 ·
Graduate Understanding Wedge Products in General Relativity
- kyp4
- · Replies 5 ·
Graduate Consciousness and Special Relativity?
- fdesilva
- · Replies 70 ·
Undergrad Gravitaional field can store mass?
- magnetar
- · Replies 23 ·
Undergrad Understanding Gravity: My Questions on Proven Facts and Debunked Theories
- issuecryer
- · Replies 12 ·
Graduate Magnetic Field Lines/Location in space
- argon520
- · Replies 2 ·
High School Can time dilation let you meet your older self in the future?
- altairz
- · Replies 3 ·
Graduate Is a Theory of Gravity Possible in Flat Minkowski Spacetime?
- MaxwellsDemon
- · Replies 23 ·
Graduate Locally flat - what does it mean?
- paweld
- · Replies 6 ·
Undergrad How Far Would You Travel at Light Speed from Your Perspective?
- HarryDaniels
- · Replies 7 ·
Graduate Acceleration does not effect clocks?
- edpell
- · Replies 20 ·
Graduate The Bianchi identity as a new incarnation of the momentum-conservation law
- Michael_1812
- · Replies 5 ·
Graduate Maxwell's Equations: Solving a Puzzlement for Bob
- Wannabeagenius
- · Replies 4 ·
Graduate Particles (not?) following geodesics in GR
- Michael_1812
- · Replies 12 ·
Graduate Motion of Train vs Platform: A Radiation Comparison
- sharma_satdev
- · Replies 1 ·
Graduate Why does the traveling twin age less at 0.9c to a 20 light-year star?
- um0123
- · Replies 16 ·
Graduate Is TeVeS the Solution to Dark Matter Mysteries?
- bcrowell
- · Replies 0 ·
Graduate Three questions related to the principle of general covariance in GR
- Michael_1812
- · Replies 11 ·
Graduate The gravitational Klein-Gordon Equation
- Altabeh
- · Replies 1 ·
Is the universe Galilean invariant?
- gamburch
- · Replies 20 ·
Graduate Duality between passive VS active transfo's
- haushofer
- · Replies 14 ·
Graduate Basic matrix representation question
- FunkyDwarf
- · Replies 11 ·
Undergrad Oh my God is the Catholic Church right?
- gparsons70
- · Replies 20 ·
Graduate 3-d model for space and black holes
- ecl1pse
- · Replies 5 ·
Graduate A way to calculate the practical range of gravity
- pkcyll
- · Replies 7 ·
Graduate Einstein's Theory: Time Doesn't Slow Down Relative to Velocity
- HarryDaniels
- · Replies 3 ·
Graduate Thomas Precession in Curved Spacetime - Giroscope Motion
- Sweet16
- · Replies 17 ·
Undergrad Is Energy-to-Mass Conversion Possible According to E=mc²?
- jobyts
- · Replies 10 ·
Graduate Inertial Frames: Is 'Absolute Rest' Possible?
- Gorn
- · Replies 6 ·
Graduate Gravity, Inertia and Contraction
- Boeley
- · Replies 2 ·
Graduate Thought Experiment on Relativity
- MonroeIns
- · Replies 7 ·
Graduate Einstein's Theory: All Frames Equally Important for Time
- HarryDaniels
- · Replies 1 ·
Graduate Frame dragging and absolute rotation
- nottay
- · Replies 5 ·
Graduate Clock postulate and differential aging
- ThomasT
- · Replies 74 ·
Graduate Why is total mass less than sum of rest masses in bound systems?
- vin300
- · Replies 1 ·
Undergrad Is Potential Energy Absolute or Relative?
- Naty1
- · Replies 14 ·
Graduate Twin Paradox - Acceleration vs Velocity
- Bussani
- · Replies 8 ·
Graduate What are the key postulates for developing Einstein's relativity theory?
- wdlang
- · Replies 2 ·
Graduate Is Time Perception Different for Travelers at Light Speed Compared to Earth?
- HarryDaniels
- · Replies 5 ·
Graduate Gravity from spacetime curvature
- marthkiki
- · Replies 1 ·
Graduate Does a stationary charge in a gravitational field emit radiation?
- GRDixon
- · Replies 63 ·