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 Are Both Coordinate Systems in Special Relativity Considered Inertial?
- JM
- · Replies 82 ·
Graduate Does Empty Space Reflect Einstein's 4D Space-Time Curvature?
- delplace
- · Replies 18 ·
Graduate The speed of gravitational field propagation
- blaksheep423
- · Replies 61 ·
Graduate Linearized Gravity: Why & How Does it Follow?
- kexue
- · Replies 3 ·
Graduate Say gravity were larger, matter burns faster?
- Spinnor
- · Replies 15 ·
Graduate Is a scalar field incompatible with the Principle of Equivalence?
- Bibipandi
- · Replies 11 ·
Graduate Value of c and strange things that don't happen when at c
- ZirkMan
- · Replies 34 ·
Graduate How many people understand General relativity by Enshtein?
- vissarion.eu
- · Replies 16 ·
Graduate How are watches syncronized
- Gerenuk
- · Replies 7 ·
Graduate Special Relativity Velocity Addition: Vector or Axis?
- E92M3
- · Replies 3 ·
Undergrad Catching a Train: Physics & Possibilities of Hitchhiking
- ejlyles
- · Replies 6 ·
Graduate Understanding Length Contractions and Time Dilation
- gsingh2011
- · Replies 9 ·
Graduate Meaning of Lorentz Transformations purely mathematically ?
- TMSxPhyFor
- · Replies 3 ·
Graduate Relativistic Vectors: Opposite Direction Assumption
- anantchowdhary
- · Replies 4 ·
Graduate Caltech Gravitational Wave theory - videos included
- DanP
- · Replies 1 ·
Graduate Spinning tornado wheel - circumference and radius
- ManDay
- · Replies 26 ·
Graduate Temperature during black hole collapse
- nickyrtr
- · Replies 12 ·
Graduate Kruskal and Penrose diagrams for a Minkosky spacetime
- JeffOCA
- · Replies 1 ·
Graduate Simulating electron beam - what equations to use?
- Vdtta
- · Replies 16 ·
Graduate Do Photons Produce Gravitational Fields?
- blaksheep423
- · Replies 26 ·
Graduate Derivation of momentum & energy formulas
- DrGreg
- · Replies 2 ·
Graduate Derivation of E=mc2: Examining Einstein's Theory
- I_am_learning
- · Replies 6 ·
Graduate How the universe looks like at the speed of light
- yoelhalb
- · Replies 6 ·
Black Hole Animation: Find Trustworthy Links for Astronomy Presentation
- JeffOCA
- · Replies 1 ·
Graduate Invariant Tensors in GR and SR
- velapis
- · Replies 3 ·
Graduate What is time, and can it be changed?
- ieifood
- · Replies 19 ·
Graduate We can't determine who is moving?
- yoelhalb
- · Replies 8 ·
Undergrad Has anybody read this book on relativity?
- Goldbeetle
- · Replies 3 ·
Undergrad Does Hubble's law implies accelerated expansion?
- LedPhoton
- · Replies 4 ·
Undergrad Conservation of Mass: Is It True?
- curiousphoton
- · Replies 10 ·
Graduate Lorentz Transformation Vector Form Formula
- elibj123
- · Replies 2 ·
Undergrad Explaining the Inverse Square Law of Gravity
- mars shaw
- · Replies 2 ·
Graduate Why Does Traveling at High Speeds Affect Aging Compared to Staying on Earth?
- blasphemite
- · Replies 2 ·
Graduate A deviation from General Relativity on cosmic scales
- Orion1
- · Replies 6 ·
Graduate Time Dilation Paradox (variant distance between two accelerating bodies)
- quertying
- · Replies 8 ·
Graduate Light in the box gravity - question.
- Dmitry67
- · Replies 11 ·
Graduate So gravity and accel can be transformed into eachother, but what about
- ManDay
- · Replies 13 ·
Graduate Misner-Thorne-Wheeler, p.92, Box 4.1, typo?
- gheremond
- · Replies 2 ·
Graduate What is the significance of causality in relativity?
- qraal
- · Replies 20 ·
Graduate Gravitational time dilation question
- ezezez
- · Replies 12 ·
Graduate In simplest terms, what is null dust?
- nomadreid
- · Replies 4 ·
Graduate Constancy of light speed implied in time and clocks
- myspacetime
- · Replies 4 ·
Graduate Can Einstein's Theory of Relativity Make Time Travel Possible?
- tj-time jumpe
- · Replies 4 ·
Graduate Active and passive gravitational mass
- TurtleMeister
- · Replies 2 ·
Graduate What's Wrong with Big Clock Moving at 0.1C?
- S.Vasojevic
- · Replies 2 ·
Graduate Understanding the Twin Paradox: Breaking the Symmetry in Time Dilation
- gsingh2011
- · Replies 3 ·
Graduate Space-Time Fabric: Understanding 3D & Time Together
- gsingh2011
- · Replies 3 ·
Graduate Proving Tensor Theorem: $\frac{\partial}{\partial t} \int {T^{0\alpha} d^3x} =0$
- Azrael84
- · Replies 11 ·
Graduate How do null coordinates help understand photon's frame of reference?
- 6Stang7
- · Replies 45 ·
Graduate Calculating the Ricci Tensor in 5D Using GRTensor
- alejandrito29
- · Replies 1 ·
Graduate Really moving. What does Bridgman mean.
- matheinste
- · Replies 9 ·
Graduate Can someone explain this time dilation problem to me?
- s1cko
- · Replies 2 ·
Graduate Black Hole Time Machine (time dilation)
- sciroccokid
- · Replies 13 ·
Graduate Geosynchronous Orbits: Explaining Relativistic Motion
- Charlie G
- · Replies 7 ·
Graduate Dilation & Contraction-First Post
- stalnaker
- · Replies 5 ·
Undergrad Has Gravity Probe B proved framed dragging
- sciroccokid
- · Replies 2 ·
Graduate Rotating disks and time dilation
- quitequick
- · Replies 7 ·
Graduate Heliocentrism from a relativistic standpoint
- deuced
- · Replies 38 ·
Graduate Retrieving Information from Black Holes (Please repond)
- capnkissling
- · Replies 7 ·
Graduate Is Distance/space Lorentz contracted?
- Austin0
- · Replies 84 ·
Graduate Solving the Stress-Energy Tensor Problem
- Azrael84
- · Replies 2 ·
Graduate Does coupling to stress-energy imply coupling to Ricci?
- A/4
- · Replies 1 ·
Graduate Is Kinetic Energy Different in Relativity?
- RobSoko315
- · Replies 21 ·
High School What was the 1919 experiment about? Explanation needed.
- pixel01
- · Replies 6 ·
Graduate Why do really fast speeds keep you from aging or feeling time ?
- beniliusbob
- · Replies 9 ·
Graduate Projection Operator: Showing Orthogonality for Non-Null q
- Azrael84
- · Replies 1 ·
Graduate Proof set of one-forms is a vector space
- Azrael84
- · Replies 6 ·
Graduate Has Gravity Probe B Confirmed Frame Dragging?
- selfAdjoint
- · Replies 8 ·
Graduate Electromagnetic blackhole violates 2nd law of thermodynamics?
- JustinLevy
- · Replies 1 ·
Graduate Gravity - a consequence or active force?
- tonyb1969
- · Replies 16 ·
Graduate Effective potential and geodesics in G.R.
- dianaj
- · Replies 2 ·
Graduate Cancer developing in different RF's
- curiousphoton
- · Replies 11 ·
Graduate Spacetime manifold: initial condition or result of GR?
- JustinLevy
- · Replies 4 ·
Graduate Curved spacetime and imaginary coordinate
- Orbb
- · Replies 3 ·
Graduate Symmetry Argument: Resolving the Twin Paradox Contradiction
- Gear300
- · Replies 37 ·
Graduate Parallel transport and geodesics
- dianaj
- · Replies 8 ·
Graduate Understanding Speed in an A,B,C Situation
- Monkfish
- · Replies 11 ·
Graduate The Curvature of Space-Time and the Big Bang Theory
- exponent137
- · Replies 6 ·
Graduate Curved spacetime: embedded or not?
- Dmitry67
- · Replies 19 ·
Graduate Spatial curvature - effect on objects
- nutgeb
- · Replies 3 ·
Graduate Understanding Gravity's Impact on Light: Beginner's Question on GM
- wofsy
- · Replies 7 ·
Graduate View from a spaceship at relativistic speeds
- russdot
- · Replies 3 ·
Graduate Less elapsed time: Lorentz Transformation or Spacetime Interval ?
- Point Conception
- · Replies 4 ·
Graduate Understanding Simultaneity in Relativity and its Effects on Observations
- stovepipe
- · Replies 12 ·
Graduate What is the true meaning of Einstein's energy formula for a particle?
- paweld
- · Replies 1 ·
Graduate A thought experiment to aid my undertsanding
- mtiller
- · Replies 3 ·
Graduate No (Lorentz) Invariant tensor of rank 3?
- maverick280857
- · Replies 2 ·
Graduate Numerical Relativity: Components of the Lapse Function?
- Wallace
- · Replies 1 ·
Graduate Invariant functions of the four-momenta
- evilcman
- · Replies 14 ·
I think i figured out gravity, really
- jakepdog
- · Replies 3 ·
Graduate Why Euclidean Geometry Fails in Real-World Space
- xMonty
- · Replies 9 ·
Graduate Curved Space: Is it More Than a Metaphor?
- xMonty
- · Replies 9 ·
Graduate A possible uncrossable boarder between bradyons and hypothetical tachyons
- Willowz
- · Replies 3 ·
Graduate Evidence that space and time has equal footing?
- Gerenuk
- · Replies 4 ·
Graduate How we compute killing vector for two-sphere
- off-diagonal
- · Replies 3 ·
Graduate Is Time Truly a Dimension in Physics or Something More?
- tempwonderer
- · Replies 6 ·
Graduate How is Constant speed of light referenced
- Zman
- · Replies 5 ·
Graduate Information loss via black Holes
- Naty1
- · Replies 4 ·
Graduate Is there any Limit to the kinetic energy
- raknath
- · Replies 11 ·
Graduate Time Dilation: How Much Fuel for 99.999999% of Speed of Light?
- 0ctothorp
- · Replies 1 ·