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 Discuss events which are simultaneous in one frame?
- neopolitan
- · Replies 280 ·
Graduate Finding the flaw in a black hole contradiction claim
- heiwos
- · Replies 1 ·
Graduate Why are tensors important in general relativity?
- jdstokes
- · Replies 21 ·
Graduate Why is the speed of light the same to any observer?
- Sheyr
- · Replies 50 ·
Graduate Understanding Special Relativity: The Train Example
- DocZaius
- · Replies 7 ·
Graduate Can Relativity Explain the Effects of High-Speed Motion on Gravity?
- kpc
- · Replies 8 ·
Graduate Is time, inside an event horizon, time-like or space-like?
- tiny-tim
- · Replies 34 ·
Graduate Does General Relativity Challenge the Conservation of Energy?
- redtree
- · Replies 19 ·
Graduate Twin Paradox: Can Age Asymmetry be Achieved on Earth?
- GRB 080319B
- · Replies 2 ·
Graduate Do you see an object go backwards in time if you travel away faster than light?
- GomezMan91
- · Replies 14 ·
Graduate Why does the Lorentz transformation divide by zero at the speed of light?
- Dropout
- · Replies 1 ·
Undergrad How does relativity explain induced currents?
- Dropout
- · Replies 3 ·
Graduate Can the Ricci Scalar Depend on Spacetime Coordinates?
- div curl F= 0
- · Replies 3 ·
Graduate Does Lorentz Factor Appear in General Relativity?
- snoopies622
- · Replies 34 ·
Graduate Is black hole entropy invariant?
- yuiop
- · Replies 2 ·
Graduate Significance of retarded time solutions in wave equations
- Nusc
- · Replies 13 ·
Graduate Do fundamental physics laws break in accelerated frames?
- newTonn
- · Replies 108 ·
Graduate Electron Velocity vs Field Strength?
- HarryWertM
- · Replies 9 ·
Undergrad Does Mass Increase as Velocity Approaches the Speed of Light?
- leftyguitarjo
- · Replies 5 ·
Graduate Why doesn't a gyroscope precess when its tilt angle contracts relativistically?
- yuiop
- · Replies 11 ·
Graduate How does a spinning disc appear as the rim approaches light speed?
- Denton
- · Replies 15 ·
Graduate Gravitational Flux in Black Holes: Can it Escape the Event Horizon?
- redtree
- · Replies 9 ·
Graduate Why doesn't a spinning wheel wobble when observed from a moving frame?
- yuiop
- · Replies 9 ·
Graduate General Relativity as a non-Abelian gauge theory
- masudr
- · Replies 3 ·
Graduate Why do objects appear to shrink as they approach the speed of light?
- leftyguitarjo
- · Replies 1 ·
Graduate Do Photons Experience Relativity Effects?
- sngtdt
- · Replies 10 ·
Graduate John Wheeler's Legacy: Einstein v. Wheeler's Black Holes
- Max Wallis
- · Replies 3 ·
Graduate What experiments are lined up to test gravity
- Chaos' lil bro Order
- · Replies 3 ·
Graduate Is Space Truly Homogeneous and Isotropic?
- bernhard.rothenstein
- · Replies 1 ·
Graduate Can inertial reference frames exist in general relativity?
- hartlw
- · Replies 15 ·
Graduate Particles travelling faster than the speed of light?
- Physonic
- · Replies 4 ·
High School Why is the Equation E=MC2 Significant in Relativity and Energy Equivalence?
- Unredeemed
- · Replies 5 ·
Graduate Lorentz transformation: why do velocity slope and time dilation have the same slope?
- calis
- · Replies 5 ·
Graduate Can a frame accelerate without force if all masses fall at the same rate?
- Chrisc
- · Replies 18 ·
Graduate Train rockets and tunnel in special relativity
- JaWiB
- · Replies 9 ·
Graduate Combination of Michelson/Morley and Time Dilation
- olli
- · Replies 3 ·
Graduate Laser Measurement and Velocity Determination in Moving Containers
- rab99
- · Replies 15 ·
Graduate Why does a released object fall if gravity is just spacetime curvature?
- Bose
- · Replies 23 ·
Graduate Definition of an Inertial Frame
- JustinLevy
- · Replies 55 ·
Undergrad Can Mass Be Transformed Into Energy?
- eoghan
- · Replies 53 ·
Graduate Calculating the travel time in relativistic travel
- rhz_prog
- · Replies 1 ·
Graduate Relativistic thermodynamics controversy?
- yuiop
- · Replies 12 ·
Graduate Travelling to the Nearest Star and Time Dilation
- Stevey-R
- · Replies 23 ·
Graduate Spaceship Observations in Relativity: A Newbie's Question
- adimare
- · Replies 7 ·
Undergrad Understanding Velocity: The Perspective of Fish in a Tank
- rab99
- · Replies 3 ·
Graduate Pervect's discussion re photon/light perspective/reference frame
- Usaf Moji
- · Replies 1 ·
Graduate Can an object orbit the sun at near-light speed without disruption?
- KodeK
- · Replies 19 ·
Graduate Inertial frames and Parity symmetry
- JustinLevy
- · Replies 3 ·
Graduate Synchronised Clocks in Motion: Einstein's Method and the Observer's Experiment
- rab99
- · Replies 4 ·
Graduate Can particle acceleration measurements reveal the spaceship's motion?
- rab99
- · Replies 7 ·
Graduate Can galaxies recede from us at velocities greater than c?
- aachenmann
- · Replies 3 ·
Graduate Measuring Lorentz Contraction: Is it Real or Just an Illusion?
- aachenmann
- · Replies 59 ·
Graduate Is the proper time differential valid as written?
- pellman
- · Replies 6 ·
Graduate How Does Gravity Affect the Elasticity of Space and Time?
- L3v3L
- · Replies 1 ·
Graduate How Can Clock Synchronization Be Achieved in a Moving Spaceship?
- rab99
- · Replies 25 ·
Graduate Circular Orbits of a Black Hole
- mysearch
- · Replies 24 ·
Graduate Frames of reference and the ontology of light speed constancy
- Chrisc
- · Replies 33 ·
Graduate How Does Space-Time Curvature Affect Light Near Black Holes?
- rab99
- · Replies 105 ·
Graduate Why do balls follow curved paths in Earth's gravity according to GR?
- aachenmann
- · Replies 79 ·
Graduate Do Black Holes Capture and Display Objects Indefinitely?
- Denton
- · Replies 1 ·
Graduate General Relativity and the Moon's orbit.
- dba27
- · Replies 2 ·
Graduate General relativity in 1+1 spacetime dimensions
- jdstokes
- · Replies 2 ·
Graduate Twin paradox in an empty universe
- Wiemster
- · Replies 15 ·
Undergrad Long planet and Galileo thought experiment
- yuiop
- · Replies 71 ·
Graduate Photon's perspective - we are one photon
- jviksne
- · Replies 1 ·
Graduate Does length contraction apply to light traveling between stars?
- Anony-mouse
- · Replies 21 ·
Graduate Possible quantum implications of GR?
- michael879
- · Replies 1 ·
Graduate A problem with light speed constancy
- meatwad
- · Replies 14 ·
Graduate Two oposite beams and earth and rocket again
- jviksne
- · Replies 7 ·
Graduate The Force of Gravity: Instantaneous or with a Delay?
- robertm
- · Replies 8 ·
Undergrad From The Suns Core to The Corona?
- Eric DMC
- · Replies 5 ·
Graduate Can we detect Earth's motion using time dilation in rockets fired in different directions?
- lohphat
- · Replies 4 ·
Graduate Two Kerr Black Holes: Possible or Impossible?
- michael879
- · Replies 5 ·
Graduate What are some examples of dynamical systems in General Relativity?
- Kreizhn
- · Replies 7 ·
Graduate Can a Charged, Accelerating Black Hole Radiate Photons?
- michael879
- · Replies 2 ·
Graduate Why Is the Schwarzschild Solution Considered Spatially Symmetric?
- off-diagonal
- · Replies 2 ·
Graduate Understanding Einstein's Law of Gravitation in Empty Space
- snoopies622
- · Replies 5 ·
Position of a ship in a new dimension
- lovegood
- · Replies 7 ·
Graduate Why is the speed of light constant in all reference frames?
- aachenmann
- · Replies 10 ·
Graduate Energy momentum tensor of a scalar field by varying the metric
- knobelc
- · Replies 9 ·
Graduate Does light truly have no reference frame?
- ktoz
- · Replies 20 ·
Graduate Photon time-slice perspective on entanglement and causality
- Anticitizen
- · Replies 7 ·
Graduate The Gauss Bonnet Lagrangian and the conserved current
- haushofer
- · Replies 5 ·
Graduate What is the correct understanding of the ct dimension?
- XVX
- · Replies 9 ·
Graduate What is the solution to the paradox of relativistic mass increase?
- GregStacey
- · Replies 13 ·
Graduate What Causes the Paradox of Aging in Time Dilation?
- Tachyonie
- · Replies 14 ·
Can stars appear to move faster than light when spinning?
- rab99
- · Replies 24 ·
Graduate Events and how they are percieved.
- Davio
- · Replies 4 ·
Graduate Naked Singularities: Questions on Fund. Particles as Black Holes
- michael879
- · Replies 1 ·
Graduate A bench-top test of special relativity ?
- Mentz114
- · Replies 10 ·
Graduate Question on Effective Potential
- mysearch
- · Replies 111 ·
Graduate Equivalence principle violation for stressed bodies in asynchronous relativity
- yuiop
- · Replies 5 ·
Undergrad Deriving Law of Conservation of Energy from E=MC2
- superdirt
- · Replies 21 ·
Graduate Can Lorentz transformations determine the middle point on a photon's worldline?
- tomprice
- · Replies 10 ·
How Thick is Space If It's Flat?
- rab99
- · Replies 5 ·
Graduate 4-velocity, the mass shell and potential energy
- pellman
- · Replies 3 ·
Graduate Do photons attract each other gravitationally?
- duordi
- · Replies 10 ·
Undergrad Thought experiment on potential energy
- snoopies622
- · Replies 34 ·
Graduate Wave equation in curved spacetime
- Pacopag
- · Replies 4 ·
Graduate How can photons have zero rest mass but nonzero momentum?
- dkgolfer16
- · Replies 10 ·