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 How does spacetime curvature cause gravitational attraction in three dimensions?
- AmorLiberalitas
- · Replies 1 ·
Graduate Is the Twin Paradox More Confusing When Moving in One Direction?
- disregardthat
- · Replies 51 ·
Graduate How Does Force Work in Special Relativity?
- Angelos
- · Replies 6 ·
Graduate Why is relativistic momentum defined using rest mass and frame-independent velocity?
- gulsen
- · Replies 35 ·
Graduate Some relativity questions for coleagues
- bernhard.rothenstein
- · Replies 29 ·
Graduate Mass transported at speed of light
- B.E.M
- · Replies 57 ·
Undergrad Galilean transformation coordinate conversion between frames
- xiankai
- · Replies 1 ·
Undergrad Combined velcoities of earth's rotation and revolution + sun + galaxy
- JPC
- · Replies 2 ·
Graduate Michel,Have you ever heard of relativistic elasticity?
- lalbatros
- · Replies 20 ·
Graduate What Are the Dimensions and Wavefunction Characteristics of a Photon?
- Monnik
- · Replies 5 ·
Graduate Can Photons Really Influence the Curvature of Space-Time While Traveling?
- MeJennifer
- · Replies 2 ·
Graduate Does electromagnetic energy in a closed box increase its mass and gravitational field?
- lalbatros
- · Replies 7 ·
Graduate Proper accelerations and rigid bodies.
- Boustrophedon
- · Replies 33 ·
Graduate Is clock synchronization compulsory
- bernhard.rothenstein
- · Replies 51 ·
Graduate Is Simultaneity Relevant in Intergalactic Communication?
- Karma
- · Replies 9 ·
Undergrad How do I calculate gravitational time dilation?
- hover
- · Replies 14 ·
Graduate How are fiber bundles and associated vector bundles used in physics?
- sly7151
- · Replies 3 ·
Graduate Time Measurement: Vibration of Photon vs Atom
- bassplayer142
- · Replies 6 ·
Graduate Interpreting the Einstein stress-energy tensor T_ab
- cesiumfrog
- · Replies 17 ·
Graduate Derivation of the Equation for Relativistic Momentum
- NanakiXIII
- · Replies 8 ·
Graduate Does a Photon Have Spatial Dimensions?
- anantchowdhary
- · Replies 33 ·
Graduate Is Proper Time a Relativistic Invariant?
- bernhard.rothenstein
- · Replies 4 ·
Graduate Dispersion and Dichroism in Gravitational Fields
- Satie
- · Replies 2 ·
Graduate Acceleration is not in direction of force
- Meir Achuz
- · Replies 2 ·
Graduate Does the expansion of spacetime affect gravitationally bound object?
- arunma
- · Replies 6 ·
Undergrad What is non-geodesic motion?
- emanaly
- · Replies 6 ·
Graduate Time dilation and expansion in accelerated motion
- MeJennifer
- · Replies 70 ·
Graduate Did the Formalont-Kopeiken Experiment Prove Einstein's Prediction?
- fauyd
- · Replies 35 ·
Graduate Is Very Special Relativity Challenging Traditional Physics?
- Schrodinger's Dog
- · Replies 22 ·
Graduate Can tachyonic momentum formulas extend smoothly to photons at c?
- bernhard.rothenstein
- · Replies 36 ·
Graduate A very interesting post by Lubos Mott
- nakurusil
- · Replies 3 ·
Graduate Is this relativity paper valid?
- anantchowdhary
- · Replies 6 ·
Graduate Is E=mc^2 Truly a Relativistic Concept?
- NanakiXIII
- · Replies 21 ·
Graduate Why is the Wikipedia article about Bell's spaceship paradox disputed at all?
- Fredrik
- · Replies 109 ·
Undergrad Can Electromagnets Instantly Communicate Across Light Years?
- JPC
- · Replies 7 ·
Graduate How Does Motion Affect Mass and Electric Fields in Different Inertial Frames?
- Emanresu
- · Replies 5 ·
Undergrad Index notation vs Dirac notation
- Thrice
- · Replies 6 ·
Graduate Smooth deformation of a Lorentzian manifold and singularities
- MeJennifer
- · Replies 2 ·
Graduate Understanding Lorentz Representations and Their Corresponding Identities
- Sombrero
- · Replies 6 ·
Graduate Are Observers on the Plane of Simultaneity Experiencing Events Simultaneously?
- jainabhs
- · Replies 1 ·
Graduate Linearity of the Loentz transformations
- bernhard.rothenstein
- · Replies 8 ·
Graduate From 'the fabric of the cosmos'
- jainabhs
- · Replies 5 ·
High School Mass increases with acceleration ?
- becsy
- · Replies 7 ·
Graduate What Physically Causes Time to Progress and Vary in Different Places?
- SilentKoala
- · Replies 35 ·
Graduate How Does Feynman's Sum Over Paths Explain Photon Trajectories?
- sheaf
- · Replies 20 ·
Graduate Can the Order of Events Change in Different Frames of Reference?
- GreenLRan
- · Replies 3 ·
Graduate How can we visualize gravity in 4D spacetime?
- hover
- · Replies 3 ·
Graduate Classical Electrodynamics and Relativity: The Lorentz-Dirac Equation
- quantum123
- · Replies 4 ·
Graduate Length Contraction: Understanding the Paradox of a 100m Train in a 40m Tunnel
- disregardthat
- · Replies 25 ·
Graduate Time Dilation - Angular Momentum - Mass
- kmarinas86
- · Replies 1 ·
Graduate Metric Expansion in Lorentzian Space-Time
- MeJennifer
- · Replies 18 ·
Graduate Does gravitational mass increase with relativistic inertial mass?
- Fallen Seraph
- · Replies 22 ·
Graduate How does the curvature of spacetime affect the motion of objects?
- rakeshbs
- · Replies 27 ·
Graduate What does time dilation look like?
- Jota
- · Replies 8 ·
Undergrad Can Photons Escape the Gravitational Pull of Black Holes?
- JPC
- · Replies 14 ·
Graduate Original papers on mercury's perihelion drift
- lalbatros
- · Replies 9 ·
Graduate Hey ,if we need to calculate time dilation with an accelerating frame
- anantchowdhary
- · Replies 4 ·
Graduate Can Zero Mass Photons Form a System with Mass?
- pivoxa15
- · Replies 20 ·
Graduate Planck size and Heisenberg and relativity
- heusdens
- · Replies 4 ·
Graduate Does space-time curvature mean curvature of a Minkowski pseudo-metric?
- MeJennifer
- · Replies 4 ·
Graduate Lorentz Transformations and their Inverse
- NanakiXIII
- · Replies 47 ·
Graduate Mainstream treatment for relativistic Doppler effect under accelerated motion?
- nakurusil
- · Replies 22 ·
Graduate Are some vacuums more slippery than others?
- kmarinas86
- · Replies 10 ·
Undergrad Why cant forces travel faster than light speed?
- Ulnarian
- · Replies 8 ·
Undergrad Does space and matter co-exist?
- MajorComplex
- · Replies 4 ·
Graduate Can Relativity Explain the Confusion of the Twins Paradox?
- leright
- · Replies 129 ·
Graduate Question on infinite curvature of the universe
- fauyd
- · Replies 2 ·
Graduate Length Contraction, Time Dilation and The Principle of Relativity
- NanakiXIII
- · Replies 18 ·
Graduate Time dialation at Earth's center
- DrMatrix
- · Replies 14 ·
High School What does E=mc² actually mean?
- linux kid
- · Replies 6 ·
Graduate Derivation of the Relativistic Doppler Effect
- NanakiXIII
- · Replies 25 ·
Graduate Relativity, Quantum Mechanics, & the Link Between Energy & Time
- daniel_i_l
- · Replies 3 ·
Exploring Black Holes: Introduction to General Relativity
- daniel_i_l
- · Replies 2 ·
Graduate Can a field disturb the geometry of a space?
- AlbertEinstein
- · Replies 12 ·
Graduate Software for celestial mechanics
- lalbatros
- · Replies 9 ·
Graduate A person travelling through a geodesic.
- Kevin_spencer2
- · Replies 1 ·
Graduate GR without Geommetry or coordinates.
- Kevin_spencer2
- · Replies 17 ·
Undergrad How to apply e=mc^2 to a photon?
- anantchowdhary
- · Replies 38 ·
Graduate What does a light particle see?
- Coldie
- · Replies 9 ·
Undergrad Can Sound Travel Faster Than Light?
- vincentm
- · Replies 4 ·
Undergrad Does speed reduce atomic clock frequency in the Hafele-Keating experiment?
- salamander3x
- · Replies 1 ·
Graduate Why are space-proper-time diagrams not used more often?
- Jorrie
- · Replies 19 ·
Graduate Should a General Relativitist Study Math Proofs?
- andytoh
- · Replies 10 ·
Graduate Can quadropoles slow down gravitational radiation?
- pervect
- · Replies 13 ·
Graduate Is There a Universal Group Contraction for Lorentz and Galilean Groups?
- Kevin_spencer2
- · Replies 6 ·
Graduate Objects near the speed of light
- really?
- · Replies 9 ·
Graduate What do reports of superluminal velocity mean for relativity?
- ArielGenesis
- · Replies 10 ·
Graduate How Accurate Is the Math in the Hafele and Keating Experiment Analysis?
- Sammywu
- · Replies 3 ·
Undergrad How Does Mass Influence the Curvature of Spacetime?
- anantchowdhary
- · Replies 11 ·
Graduate Is the schwarzchild radius a radius of curvature?
- kmarinas86
- · Replies 9 ·
Undergrad Why is the twin paradox not symmetrical if both twins see the other receding?
- keith_21
- · Replies 37 ·
Graduate Formal definition of the Equivalence Principle(s)
- lalbatros
- · Replies 3 ·
Graduate Relativity, force, acceleration, momentum
- DonnieD
- · Replies 5 ·
Graduate What wrong with Lorent transformation here?
- AlienUFO
- · Replies 3 ·
Graduate Proper frame of reference and the formation of black holes
- kmarinas86
- · Replies 1 ·
Undergrad Do radio wavelengths scale with gravitational field strength?
- Entity
- · Replies 8 ·
Graduate Can Concentrated Light Create Gravity by Warping Space-Time?
- anantchowdhary
- · Replies 34 ·
Graduate Relativistic dynamics as a semantic problem
- bernhard.rothenstein
- · Replies 6 ·
Graduate How do synchronized watches compare between groups in different gravitational fields?
- actionintegral
- · Replies 117 ·
Graduate Is the Electron Paper from Annales de la Fondation Louis de Broglie Reliable?
- nakurusil
- · Replies 6 ·