Special and General Relativity Forum

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 I am attempting a condition where Newton and Einstein agree

  • duordi
  • · Replies 10 ·
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Graduate Constant Acceleration: Thought Experiment & Answers

  • Gulliver
  • · Replies 8 ·
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8

Graduate Invariant and covariant in special relativity

  • bernhard.rothenstein
  • · Replies 9 ·
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9

Graduate Is Faster-Than-Light Travel Truly Impossible?

  • LurkingEyes
  • · Replies 10 ·
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Graduate Aging related to speed of the Earth

  • jiufer
  • · Replies 3 ·
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3

Graduate Is Space-Time Curvature Zero Inside a Spherical Cavity at Earth's Center?

  • lightarrow
  • · Replies 30 ·
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Graduate Why is c the Limit? Understanding the Speed of Light Explained

  • prasannapakkiam
  • · Replies 5 ·
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Graduate Black holes and entropy: energy with respect to infinity

  • cesiumfrog
  • · Replies 1 ·
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Graduate Gr-qc/921001 - the constraint algebra of general relativity

  • shoehorn
  • · Replies 3 ·
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Graduate Do light and gravity take identical geodesics?

  • duordi
  • · Replies 23 ·
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Undergrad Why c=1 in relativistic equations

  • bernhard.rothenstein
  • · Replies 8 ·
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Graduate Lorentz group, Poincaré group and conformal group

  • lalbatros
  • · Replies 12 ·
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High School Time dilation in plain english

  • phyti
  • · Replies 8 ·
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8

Graduate Gravitational Effects on a 1 Mile Length of Rope

  • wolram
  • · Replies 7 ·
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7

Graduate Mass of a system of two photons

  • bernhard.rothenstein
  • · Replies 52 ·
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Graduate Light Speed Relativity: Discussions on Simultaneous Photons

  • gonegahgah
  • · Replies 18 ·
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Undergrad Question about deflection of light test

  • RoccoV
  • · Replies 29 ·
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29

Graduate Orbital Mechanics: NASA Launching Probes & GR/SR Considerations

  • blumfeld0
  • · Replies 8 ·
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8

Graduate Is Time a Measure of Length in a Single Point?

  • petm1
  • · Replies 13 ·
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13

Graduate Electron beams and an inertial frame problem

  • Hamish
  • · Replies 10 ·
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10

Graduate Theory of Everything: Bridging Relativity & Quantum Mechanics

  • apope
  • · Replies 8 ·
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Graduate I have devised away to travel Faster Than Light

  • icr_03
  • · Replies 1 ·
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Graduate Proof of Mass Dilation: Experimental Evidence & Examples

  • peyo
  • · Replies 9 ·
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9

Undergrad How Does a Black Hole Attract Light?

  • Manu Vincent
  • · Replies 10 ·
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10

Graduate Physical Intuition for Length Contraction

  • Phymath
  • · Replies 8 ·
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8

Graduate Schwarzchild solution with cosmological constant

  • Terilien
  • · Replies 3 ·
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3

Undergrad Can space-time curvature be applied to artificial satellites.

  • udaykumar
  • · Replies 21 ·
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Graduate What do they do in numerical GR ?

  • smallphi
  • · Replies 16 ·
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Graduate Trying to wrap my pea sized brain around the universe.

  • Frozenoak
  • · Replies 4 ·
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4

Graduate Energy-mom tensor does not determine curvature tensor uniquely ?

  • smallphi
  • · Replies 10 ·
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10

Undergrad Questions about General Relativity (GR) - Andrew

  • Areid45
  • · Replies 4 ·
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Graduate Solving Basic SR Confusion for Twin Paradox

  • cscott
  • · Replies 70 ·
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Graduate Why is the speed of light constant in special relativity?

  • SpazAttack
  • · Replies 14 ·
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Undergrad Questions about motion equations

  • JustinTime
  • · Replies 2 ·
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2

Undergrad General Relativity for Dummies

  • Alabran
  • · Replies 42 ·
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Graduate Why is the curvature around a star asymmetrical in the theory of relativity?

  • udaykumar
  • · Replies 9 ·
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Graduate From the scalar of curvature (Newman-Penrose formalism) to the Ricci scalar

  • cosmicstring1
  • · Replies 8 ·
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Graduate Fundamental identity of SR valid in GR?

  • birulami
  • · Replies 16 ·
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Graduate Time dilation without acceleration

  • Point Conception
  • · Replies 5 ·
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5

Graduate Complex four vector algebra in relativity

  • MeJennifer
  • · Replies 9 ·
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Graduate Smolin's in depth perspective on Einstein, man and mind (NYRB)

  • marcus
  • · Replies 1 ·
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1

Graduate A question about a relativity light clock

  • Taremos
  • · Replies 11 ·
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11

Undergrad Time Dilation: An Explainer for Beginners

  • say_physics04
  • · Replies 10 ·
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10

Graduate Does Einstein's General Relativity need to be adjusted for the Higgs field?

  • bananan
  • · Replies 7 ·
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Undergrad How Can Photons Have Momentum If They Have No Mass?

  • 3dsmax
  • · Replies 4 ·
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4

Undergrad Time Dilation Explained: Why Planes Lose Time

  • morgan?
  • · Replies 5 ·
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5

Graduate How to survive in a black hole: Myth Debunked

  • quantum123
  • · Replies 45 ·
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Graduate Understanding SR: The Relationship Between Speed, Time, and Space Explained

  • Fletcher
  • · Replies 10 ·
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Graduate Debunking Crackpot Theories on Special and General Relativity | calphysics.org

  • blumfeld0
  • · Replies 7 ·
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High School Is Time Travel Physically Possible According to Einstein's Theories?

  • Dr.Calpol3
  • · Replies 12 ·
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Graduate Nothing can exceed the speed of light

  • pgcurt
  • · Replies 4 ·
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Graduate Uncovering the Metric Sign in Einstein's Equations

  • blumfeld0
  • · Replies 1 ·
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Graduate Effects of Accelerating Point Mass on Orbital Dynamics

  • MeJennifer
  • · Replies 8 ·
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Graduate What is a Cauchy surface and its significance in spacetime?

  • Ratzinger
  • · Replies 2 ·
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Graduate Is Time a Constant Journey or a Fixed Point in Space?

  • JPC
  • · Replies 10 ·
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Graduate General Relativity: Comparing Newtonian and Einstein Circular Orbits

  • charybdis
  • · Replies 7 ·
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Graduate Speed of light in the universe, experimental data

  • lalbatros
  • · Replies 19 ·
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Graduate About interpretations and logic

  • enridp
  • · Replies 20 ·
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Graduate Does the Sun Create Different Geodesics for Each Planet?

  • Milind_shyani
  • · Replies 18 ·
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Graduate Light, Elevators, and Gravity: A Confusing Experiment or Just Me?

  • gonegahgah
  • · Replies 11 ·
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11

Graduate Does a black hole have a stress-energy tensor?

  • touqra
  • · Replies 17 ·
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Graduate How Does Newton's Second Law Adapt to Relativistic Speeds?

  • hover
  • · Replies 19 ·
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19

Graduate Non-relativistic derivation of Schwarzschild's equation

  • allison johnson
  • · Replies 8 ·
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8

Undergrad Does Light Exert a Force on Lasers?

  • bassplayer142
  • · Replies 6 ·
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6

Undergrad Is the speed of light really constant?

  • Goliatbagge
  • · Replies 7 ·
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7

Undergrad Time as a function of distance for constant a

  • DaveC426913
  • · Replies 18 ·
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18

Graduate Calculating distance between two points in potential

  • JimLad
  • · Replies 3 ·
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3

Graduate Particle production in curved spacetime

  • smallphi
  • · Replies 13 ·
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Graduate Conceptual Aspect of Relativity: Electric & Magnetic Forces

  • Ja4Coltrane
  • · Replies 1 ·
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1

Graduate A question about forces in different references of frame

  • henry_arsenal
  • · Replies 3 ·
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3

Graduate Question on advance of perihelion.

  • Ian
  • · Replies 9 ·
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9

Graduate Static vs Stationary Spacetime Metric: Examples & Explained

  • blumfeld0
  • · Replies 11 ·
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11

Physics Articles - Abstracts for SR and GR Papers

  • pmb_phy
  • · Replies 12 ·
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12

Graduate Parametric equations for geodesics

  • andybham
  • · Replies 4 ·
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4

Undergrad Time Dilation: Stationary vs. Moving Atomic Clocks

  • spaghed87
  • · Replies 52 ·
2
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52

Graduate Question about the weak field approximation

  • Terilien
  • · Replies 18 ·
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18

Undergrad Distance Travelled by B After Circumnavigating A: 2\pi r

  • MeJennifer
  • · Replies 5 ·
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5

Graduate Electric Current in Special Relativity

  • jimmd
  • · Replies 4 ·
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4

Graduate SR forbides BHs and GR demands them

  • Johnny R
  • · Replies 1 ·
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1

Graduate Point Masses and the Speed of Light: An Exploration of Relativity

  • mr200backstrok
  • · Replies 2 ·
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Graduate Professionally researched relativistic orbits

  • jgraber
  • · Replies 3 ·
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3

Graduate Hi, can't find the way to debunk this

  • polystethylene
  • · Replies 23 ·
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23

Graduate Geodesics between two points ?

  • smallphi
  • · Replies 11 ·
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11

Undergrad Relativity in Film: A Resource Guide

  • tareqsalahedin
  • · Replies 3 ·
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3

Graduate How Does Snell's Law Change in Curved Spacetime?

  • blumfeld0
  • · Replies 1 ·
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1
  • Poll Poll

Graduate Schwarzschild Orbits in Cartesian coordinates

  • CarlB
  • · Replies 62 ·
3
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62

Graduate Question about the energy momentum tensor

  • Terilien
  • · Replies 8 ·
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8

Graduate Connection of General relativity and geometric Refraction of light

  • exponent137
  • · Replies 1 ·
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1

Graduate Is Jefimenko's Approach to Relativity Based on Retarded Potentials Valid?

  • Marc Millis
  • · Replies 1 ·
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1

Graduate Vacuum Solutions: General Relativity Explained

  • MeJennifer
  • · Replies 4 ·
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4

Graduate Looking out the window of a fast ship

  • Taremos
  • · Replies 24 ·
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24

Undergrad Clock Ticking Speed: Center vs Surface

  • Johnny R
  • · Replies 11 ·
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11

Graduate Unveiling the Mystery of Simultaneity

  • Santural
  • · Replies 31 ·
2
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31

Graduate Liftetime of photons in matter

  • oyvindo
  • · Replies 1 ·
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1

Graduate Frame fields vs. Coordinate bases

  • masudr
  • · Replies 4 ·
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4

Graduate Does gravitational waves participate in gravitation interaction?

  • magnetar
  • · Replies 2 ·
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Graduate How is 3-space curved without a fourth spatial dimension?

  • Robert100
  • · Replies 2 ·
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Graduate Some simple minded aspects of gravity

  • oldman
  • · Replies 18 ·
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18

Undergrad Relationship between E=mc^2 and gravity

  • pgcurt
  • · Replies 14 ·
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14

Graduate What is it about speed that affects time?

  • Poita
  • · Replies 19 ·
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19