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 EM/GR Radiation as Scattering?
- bolbteppa
- · Replies 16 ·
Graduate Direct Experimental Evidence of Lorentz Transformations
- Thecla
- · Replies 13 ·
Graduate Theoretical Extent of Redshift - How Far Can It Go?
- Wes Tausend
- · Replies 2 ·
Graduate Could Dark Matter and Dark Energy Be Illusions of Imperfect Physics?
- Gary Boothe
- · Replies 6 ·
Graduate Causality and quantum entanglement
- acegikmoqsuwy
- · Replies 15 ·
Graduate Will Light Speed Travel Affect Perception of Andromeda Galaxy's Age and Distance?
- duordi134
- · Replies 19 ·
Graduate Understand Relativity & Lorentz Transformation - Aaron
- doaaron
- · Replies 3 ·
Graduate Introductory Material for Relativistic Boltzmann Equation
- wacki
- · Replies 4 ·
Graduate Where can I find solutions to the problems in Hartle's Gravity: An Introduction?
- PeroK
- · Replies 3 ·
Graduate What Does a Rotating Mass in Kerr Metric Rotate With Respect To?
- exmarine
- · Replies 4 ·
Graduate Rindler Horizon and Lorentz contraction
- JD96
- · Replies 12 ·
Graduate Definition of Form-Invariant Function: Q&A
- Einj
- · Replies 3 ·
Graduate Mass-Energy: Particle Behavior & Properties
- gamow99
- · Replies 4 ·
Graduate Ricci Tensor Equation in Zee's "Einstein's Gravity in a Nutshell" Explained
- Lapidus
- · Replies 1 ·
Graduate Why Do Covariant and Contravariant Vectors Use Opposite Indexing?
- TimeRip496
- · Replies 28 ·
Graduate Penrose Diagram for the Kerr Black Hole
- Clauslism
- · Replies 19 ·
Graduate Effects of relativistic mass on astronaut
- SpiderET
- · Replies 26 ·
Graduate GR Intuition: Measuring Physical Quantities on Tangent Spaces of M
- danieron
- · Replies 16 ·
Undergrad Gravity Waves: Frequency & Understanding Needed
- mithun pv
- · Replies 4 ·
Graduate Adding Another Time Axis to Space-Time Diagram
- binbots
- · Replies 5 ·
Graduate Speed of light related to mass
- Nuradh
- · Replies 13 ·
Graduate Is a Zero Frame of Reference Possible in the Universe?
- PWiz
- · Replies 18 ·
Graduate Spacetime Curvature by Mass: Gravity Impact?
- jparth
- · Replies 2 ·
Graduate Gorini vs. Jin: Superluminal Frames in 1+1 Dimensions
- bcrowell
- · Replies 2 ·
Graduate Is relativity reciprocal or directional?
- SpiderET
- · Replies 4 ·
Graduate Is it true than general relativity can be deduced from a max
- Garrulo
- · Replies 4 ·
Graduate Throwing something into a black hole
- Sonderval
- · Replies 11 ·
Graduate GR Journal: Equivalence Principle & Tidal Forces
- DiracPool
- · Replies 7 ·
Graduate Thomas precession Goldstein/Eisberg versus Taylor/Wheeler
- gjj
- · Replies 2 ·
Graduate Does relativity change the rules for time being a vector or a scalar?
- joenitwit
- · Replies 25 ·
Graduate Close to the speed of light relative to what?
- Tiago
- · Replies 27 ·
Graduate Kerr & Kerr-Newman Solutions in Straumann's GR
- ShayanJ
- · Replies 8 ·
Graduate Understanding Lambda Mu Nu Prime and Its Indices
- DiracPool
- · Replies 5 ·
Graduate Now plane moving to the past and future
- rajeshmarndi
- · Replies 17 ·
Undergrad Does Mass Really Change with Velocity Near the Speed of Light?
- mike232
- · Replies 3 ·
Graduate Einstein's argument for a finite universe
- dynawics
- · Replies 10 ·
Graduate Help with Notation: (Λ-1)μν=Λνμ ≡ ημρΛρσησν
- grzz
- · Replies 2 ·
Graduate Deriving the Lorentz Transformation
- toothpaste666
- · Replies 27 ·
Graduate Learning General Relativity: Finding Examples with Numbers
- TimeRip496
- · Replies 2 ·
Graduate Practice calculations for a relativistic speed object
- Lamdbaenergy
- · Replies 10 ·
Graduate Experimental determination of the metric tensor
- nearlynothing
- · Replies 5 ·
Graduate Are Electron Neutrinos Tachyons? Expert Analysis of 1408.2804v7
- mrnike992
- · Replies 1 ·
Graduate Proper mass vs Schwarzschild Mass
- Matterwave
- · Replies 6 ·
Undergrad Ball Thrown Up: Constant Speed Despite Height
- rajeshmarndi
- · Replies 3 ·
Graduate Could black holes have no singularity?
- zerospin
- · Replies 7 ·
Graduate Are force fields deformed by length contraction?
- lennon
- · Replies 28 ·
Graduate Understanding Einstein's Field Equations Solutions
- dynawics
- · Replies 1 ·
Graduate Sphere-Ellipsoid Metric Transformation at u = 0.99c
- ChrisVer
- · Replies 1 ·
Graduate Do Photons Perceive Time?
- RaptorHunter
- · Replies 4 ·
High School Light Constant: Speed, Increase, Decrease?
- starstruck
- · Replies 3 ·
Undergrad General Case of Relative Velocities
- Quarlep
- · Replies 2 ·
Graduate Is the twin paradox affected by the topology of a torus?
- tom.stoer
- · Replies 7 ·
Graduate Useful relativistic gravity equation of motion
- Jonathan Scott
- · Replies 6 ·
Graduate Do we have time because we are moving?
- Taragond
- · Replies 72 ·
Graduate Relativistic Orbits: Effects of Mass Increase & Length Contraction
- Ndaren
- · Replies 13 ·
Graduate Effect of Magnitude & Direction on Organpipe's Note
- Rodrigo.D.L.M.
- · Replies 1 ·
Graduate Riemann tensor and derivatives of ##g_{\mu\nu}##
- Einj
- · Replies 4 ·
Graduate Where Can I Find a Detailed Explanation of Stress-Energy Tensors in GR?
- ShayanJ
- · Replies 93 ·
Graduate Kind of newbie question about gravity
- Tiago
- · Replies 55 ·
Graduate Comoving Observers Concepts cosmology
- binbagsss
- · Replies 9 ·
Graduate Understanding the Metric Tensor: A 4-Vector Perspective
- Maybe_Memorie
- · Replies 5 ·
Graduate Black Holes & Hawking Radiation: Time Paused in Gravity?
- Abishek
- · Replies 4 ·
Undergrad Does Gravity Affect Time Dilation on a Flat, Non-Rotating Earth?
- ScientificMind
- · Replies 2 ·
Graduate Is there a difference between rest mass and invariant mass?
- T'Pau
- · Replies 11 ·
High School Time Travel & Theory of Relativity for HS Students
- ScienceMan
- · Replies 2 ·
Graduate What Is the Truth Behind the Misnomer of Stable Wormholes?
- srivatsa
- · Replies 1 ·
Graduate Twin paradox and the size of the universe
- DiracPool
- · Replies 32 ·
Graduate Light clock on Train experiment.
- DAC
- · Replies 13 ·
Undergrad Speed of Light: Does It Slow Down in a Gravity Field?
- Adam Rifai
- · Replies 14 ·
Graduate Proper Distance, Rest Length: What to Know
- JD96
- · Replies 3 ·
Graduate Real Earth Diameter: SRT Calculation Revealed
- keinstein
- · Replies 21 ·
Graduate Is this an acceptable way to state the EP?
- nearlynothing
- · Replies 19 ·
Graduate EMrocket Engine: Does it Violate Newton's Law?
- duordi134
- · Replies 7 ·
Graduate Kaluza-Klein Theory Q&A: Inducing EM Field & Ricci Tensor
- lightfire
- · Replies 2 ·
Graduate Choice of Origin of Coordinate Systems
- Fantasist
- · Replies 15 ·
Graduate Surface gravity of Kerr black hole
- Ganesh Ujwal
- · Replies 1 ·
Graduate Does Penrose's Andromeda paradox prove determinism?
- Gravity
- · Replies 9 ·
Graduate Explaining Universe Expansion with Gravitons in String Theory/Supergravity
- nuclearhead
- · Replies 2 ·
Graduate Norm of Vector Formed by Two Vectors
- PhyAmateur
- · Replies 13 ·
Graduate A question of history concerning Rindler Coordinates
- Ammah
- · Replies 7 ·
Undergrad Questions about Gravitational Waves: Answers Here
- Bassirou
- · Replies 5 ·
Graduate Will Time Dilation at 100% c Speed Result in Eternal Life?
- Adam Rifai
- · Replies 44 ·
Graduate A direct derivation of the speed transformation formula?
- Sugdub
- · Replies 23 ·
Graduate Diameter of Earth With GRT: Did Feynman Say It?
- exmarine
- · Replies 8 ·
Graduate Compare Starting w/ Ansatz vs Complete Solution
- space-time
- · Replies 3 ·
Graduate Ricci tensor of schwarzschild metric
- PhyAmateur
- · Replies 6 ·
Undergrad E=MC^2 Explained: Photon Mass & Energy
- Adam Rifai
- · Replies 10 ·
Graduate Does object lose kinetic energy due to emitting gravitational waves?
- bgfnfgh
- · Replies 14 ·
Graduate Gravitational Lensing Derivations - Is There Another Way?
- ChrisVer
- · Replies 2 ·
Graduate Time dilation as seen by different observers
- dougy
- · Replies 16 ·
Graduate A thought experiment general relativity
- Shahar
- · Replies 25 ·
Graduate Are There Really 4 Isotropic Axes of Spacetime at Light Speed?
- brianhurren
- · Replies 3 ·
Graduate How Does a Photon Get Absorbed at t=0?
- Dead RAM
- · Replies 5 ·
Graduate What Happens to the Space Between Relativistically Moving Spaceships?
- intervoxel
- · Replies 2 ·
Graduate Traveling at Near Speed of Light - Questions Answered
- derek10
- · Replies 8 ·
Graduate Bending of Light: Newton vs Einstein
- dd129495
- · Replies 13 ·
Graduate Rest Energy of Electrons in Particle Accelerators: Zero or Not?
- Mizies
- · Replies 6 ·
Graduate Compacting Matter in a Black Hole Singularity: Is It Pure Entropy?
- !Jon Snow!
- · Replies 2 ·
Graduate Euler-Lagrange Equation of $$ds^2=-f(x)dt^2+g(x)dx^2+2l(x)dxdt$$
- PhyAmateur
- · Replies 2 ·
Graduate Modifications in General Relativity
- aditya ver.2.0
- · Replies 8 ·