Menu

Navigation

More options

Style variation

Contact us

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.

Filters

Graduate Can SR be mathematically proven to be self-consistent?

Apr 14, 2013 · Replies 9 · Apr 15, 2013

Replies: 9

Views: 2K

Graduate Lorentz transformation, mistake but right formula (for light) ?

Apr 13, 2013 · Replies 2 · Apr 14, 2013

Replies: 2

Views: 2K

Graduate Speed of Light relation with time dilation

Apr 12, 2013 · Replies 10 · Apr 14, 2013

Replies: 10

Views: 4K

Graduate Revisiting the Non-Static Newtonian Limit: Resolving Conceptual Issues

Apr 9, 2013 · Replies 19 · Apr 13, 2013

Replies: 19

Views: 3K

Graduate Can we do other than Lorentz (or Poincare) Transformation in SR?

Apr 11, 2013 · Replies 12 · Apr 13, 2013

Replies: 12

Views: 3K

Graduate Gravitational non linearity: the glue of Black Holes

Apr 13, 2013 · Replies 1 · Apr 13, 2013

Replies: 1

Views: 2K

Graduate Is the future just an illusion in the block universe model?

Apr 10, 2013 · Replies 28 · Apr 13, 2013

Replies: 28

Views: 4K

Graduate Why does the speed of light have to be constant to all observers?

Apr 12, 2013 · Replies 4 · Apr 12, 2013

Replies: 4

Views: 2K

Undergrad Einstein's contribution post 1915

Apr 12, 2013 · Replies 9 · Apr 12, 2013

Replies: 9

Views: 2K

Undergrad Light waves propagate with no medium

Apr 12, 2013 · Replies 3 · Apr 12, 2013

Replies: 3

Views: 2K

Graduate Question: does the physical curvature of spacetime ever move ?

Apr 12, 2013 · Replies 6 · Apr 12, 2013

Replies: 6

Views: 2K

Graduate Bob and Alice at the Event Horizon again.

Apr 12, 2013 · Replies 1 · Apr 12, 2013

Replies: 1

Views: 2K

Graduate What are the different equivalence principles and how are they related?

Apr 12, 2013 · Replies 1 · Apr 12, 2013

Replies: 1

Views: 2K

Graduate Understanding the Relationship between Line Element and Length in Four Vectors

Apr 12, 2013 · Replies 1 · Apr 12, 2013

Replies: 1

Views: 2K

Graduate Where Does Gravity Begin? Examining the Stress-Energy Tensor

Apr 12, 2013 · Replies 1 · Apr 12, 2013

Replies: 1

Views: 1K

Graduate Understanding Time Dilation: A Confusing Experiment Explained

Apr 11, 2013 · Replies 4 · Apr 12, 2013

Replies: 4

Views: 2K

Graduate How can gravity grasp on space time?

Apr 11, 2013 · Replies 7 · Apr 11, 2013

Replies: 7

Views: 2K

Graduate Difference between jerk in accerlation and deceleration?

Apr 11, 2013 · Replies 7 · Apr 11, 2013

Replies: 7

Views: 3K

Graduate How does SR quantify the direction relative properties of inertia?

Apr 11, 2013 · Replies 11 · Apr 11, 2013

Replies: 11

Views: 2K

Graduate A silly question about gravitational waves

Apr 10, 2013 · Replies 5 · Apr 10, 2013

Replies: 5

Views: 2K

Graduate Suppose you are far into deep space

Apr 8, 2013 · Replies 12 · Apr 10, 2013

Replies: 12

Views: 2K

Graduate Doubts in special theory of relativity

Apr 1, 2013 · Replies 127 · Apr 10, 2013

5

Replies: 127

Views: 15K

Graduate How can angular momentum and relativity coexist?

Apr 10, 2013 · Replies 20 · Apr 10, 2013

Replies: 20

Views: 3K

Undergrad Why Does Light Take 8 Minutes to Reach Earth from the Sun

Apr 9, 2013 · Replies 4 · Apr 10, 2013

Replies: 4

Views: 2K

Graduate Speed, Time and Relativity: A Lurker's Question

Apr 10, 2013 · Replies 4 · Apr 10, 2013

Replies: 4

Views: 1K

Graduate Light Deflection & Speed: Gravity's Effect?

Apr 10, 2013 · Replies 4 · Apr 10, 2013

Replies: 4

Views: 2K

Graduate Applying Lorentz Transformation to 4-Velocity Vector

Apr 8, 2013 · Replies 7 · Apr 10, 2013

Replies: 7

Views: 3K

Graduate Is GR Considered a Gauge Theory?

Apr 5, 2013 · Replies 54 · Apr 10, 2013

2

Replies: 54

Views: 8K

Graduate Speed of Light: Relative Measurement for 2 Observers

Apr 9, 2013 · Replies 9 · Apr 9, 2013

Replies: 9

Views: 2K

Excellent video on General and Special Relativity

Apr 6, 2013 · Replies 7 · Apr 9, 2013

Replies: 7

Views: 2K

Graduate Does space have a physical role in the jerk of acceleration?

Apr 9, 2013 · Replies 7 · Apr 9, 2013

Replies: 7

Views: 2K

Graduate A novel way of defining coordinates?

Apr 7, 2013 · Replies 3 · Apr 9, 2013

Replies: 3

Views: 2K

Graduate Time Dilation & Space Contraction: I'm Confused

Apr 9, 2013 · Replies 3 · Apr 9, 2013

Replies: 3

Views: 2K

Undergrad A phone call at the speed of light?

Apr 9, 2013 · Replies 8 · Apr 9, 2013

Replies: 8

Views: 6K

Graduate Dust generated static space-time implications on fluid 4-velocity

Apr 6, 2013 · Replies 48 · Apr 9, 2013

2

Replies: 48

Views: 9K

Undergrad Black Holes Uniting: How Do They Crash?

Apr 9, 2013 · Replies 5 · Apr 9, 2013

Replies: 5

Views: 2K

Undergrad How does timedilation apply to things other than lightclocks?

Apr 7, 2013 · Replies 12 · Apr 9, 2013

Replies: 12

Views: 2K

Graduate Does the spinning of a wheel affect its aging compared to its surroundings?

Apr 9, 2013 · Replies 2 · Apr 9, 2013

Replies: 2

Views: 2K

Graduate Do you agree with my explanation of time dilation

Apr 8, 2013 · Replies 1 · Apr 9, 2013

Replies: 1

Views: 1K

Graduate Questions about closed timelike curves

Apr 8, 2013 · Replies 15 · Apr 8, 2013

Replies: 15

Views: 2K

Undergrad Question about relative motion: 3 Golden Retrievers in deep space

Apr 8, 2013 · Replies 12 · Apr 8, 2013

Replies: 12

Views: 2K

Undergrad Explaining the Physics Behind Light Speed: F=ma

Apr 7, 2013 · Replies 2 · Apr 8, 2013

Replies: 2

Views: 2K

Graduate Time dilation and length contraction

Apr 8, 2013 · Replies 5 · Apr 8, 2013

Replies: 5

Views: 2K

High School Understanding Inertial reference frames

Aug 13, 2012 · Replies 54 · Apr 8, 2013

2

Replies: 54

Views: 11K

Graduate Total linear momentum does not conserved as viewed from other frame?

Apr 4, 2013 · Replies 13 · Apr 8, 2013

Replies: 13

Views: 3K

Graduate Maxwell's Eq, Magnetic Monopoles, GR & Gravimag. Monopole?

Apr 7, 2013 · Replies 3 · Apr 8, 2013

Replies: 3

Views: 2K

Graduate Hypothetical thought experiment about time dilation

Apr 7, 2013 · Replies 6 · Apr 8, 2013

Replies: 6

Views: 2K

Graduate Are Faster-Than-Light Effects Predicted by Special Relativity?

Mar 31, 2013 · Replies 21 · Apr 7, 2013

Replies: 21

Views: 3K

Graduate Black Hole : Infalling Observer looking back

Apr 6, 2013 · Replies 4 · Apr 7, 2013

Replies: 4

Views: 5K

Graduate Degrees of Freedom in Linearized Gravity (and beyond)

Mar 19, 2013 · Replies 6 · Apr 7, 2013

Replies: 6

Views: 5K

Graduate Is Light Moving in a Slant Direction Possible?

Apr 6, 2013 · Replies 14 · Apr 7, 2013

Replies: 14

Views: 2K

Graduate Understanding Observation Frames in GR Theory

Apr 6, 2013 · Replies 8 · Apr 7, 2013

Replies: 8

Views: 2K

Graduate Still confusion in relativity of simultaneity and time dilation .

Apr 5, 2013 · Replies 13 · Apr 6, 2013

Replies: 13

Views: 3K

Graduate Can Warp Drives Really Make Faster-Than-Light Travel Possible?

Mar 31, 2013 · Replies 14 · Apr 6, 2013

Replies: 14

Views: 4K

Graduate Wormhole Problem: Limit of Acceleration?

Apr 6, 2013 · Replies 1 · Apr 6, 2013

Replies: 1

Views: 2K

Graduate Gravitational Length Contraction

Apr 5, 2013 · Replies 3 · Apr 5, 2013

Replies: 3

Views: 2K

Graduate Schwarzschild Metric & Satellite Orbits: A Question

Apr 5, 2013 · Replies 3 · Apr 5, 2013

Replies: 3

Views: 2K

Graduate Meaning of Schwarzschild solution in isotropic/anisotropic coordinates

Apr 4, 2013 · Replies 12 · Apr 5, 2013

Replies: 12

Views: 4K

Graduate Coordinate patches on curved manifolds

Feb 16, 2013 · Replies 22 · Apr 5, 2013

Replies: 22

Views: 5K

Undergrad Are descriptions of relative velocity arbitrary?

Apr 4, 2013 · Replies 10 · Apr 5, 2013

Replies: 10

Views: 2K

Graduate Relative velocity of light in special theory of realtivity?

Apr 1, 2013 · Replies 17 · Apr 5, 2013

Replies: 17

Views: 2K

Graduate Writing the Einstein action in terms of tetrads

Sep 5, 2012 · Replies 6 · Apr 5, 2013

Replies: 6

Views: 3K

Graduate Can someone interpret this Einstein quote?

Apr 4, 2013 · Replies 31 · Apr 4, 2013

2

Replies: 31

Views: 4K

Graduate Stress-energy tensor definition

Mar 29, 2013 · Replies 7 · Apr 4, 2013

Replies: 7

Views: 2K

Graduate Is the Mass of a Photon Affected by its Energy?

Apr 3, 2013 · Replies 6 · Apr 4, 2013

Replies: 6

Views: 2K

Graduate Cause of Gravity Force: Explaining Monopolar Attraction

Apr 4, 2013 · Replies 3 · Apr 4, 2013

Replies: 3

Views: 2K

Graduate Interpreting Stress-Energy Tensor Components for Klein-Gordon & EM Fields

Nov 18, 2010 · Replies 9 · Apr 4, 2013

Replies: 9

Views: 5K

Graduate Why is Motion Through Space Limited in Relation to Motion Through Time?

Apr 2, 2013 · Replies 17 · Apr 4, 2013

Replies: 17

Views: 3K

Graduate Schwarzschild conservation of angular momentum

Apr 3, 2013 · Replies 14 · Apr 4, 2013

Replies: 14

Views: 4K

Graduate Minimal Coupling Needed for Covariant Energy Conservation?

Apr 3, 2013 · Replies 2 · Apr 3, 2013

Replies: 2

Views: 2K

Graduate Calculating RiemannScalar in 2-D: Where to Start

Apr 3, 2013 · Replies 5 · Apr 3, 2013

Replies: 5

Views: 2K

Graduate Are clocks used in general relativity?

Mar 29, 2013 · Replies 38 · Apr 3, 2013

2

Replies: 38

Views: 6K

Graduate Understanding Light Speed: The Impact of an Observer Moving at 10% C

Apr 1, 2013 · Replies 20 · Apr 3, 2013

Replies: 20

Views: 4K

Graduate Mass bending space makes me think there's another side to space

Apr 3, 2013 · Replies 29 · Apr 3, 2013

Replies: 29

Views: 3K

Graduate Is Gravitational Time Dilation Affected by Gravitational Potential?

Apr 3, 2013 · Replies 1 · Apr 3, 2013

Replies: 1

Views: 2K

High School What is the meaning of E=mc^2?

Apr 3, 2013 · Replies 2 · Apr 3, 2013

Replies: 2

Views: 2K

Undergrad Examples for gravitational time dilation

Apr 3, 2013 · Replies 14 · Apr 3, 2013

Replies: 14

Views: 8K

Undergrad Explaining the equation of gravitational time dilation

Apr 3, 2013 · Replies 3 · Apr 3, 2013

Replies: 3

Views: 2K

Undergrad Gravitational Time Dilation: Equation & Calculation

Apr 3, 2013 · Replies 2 · Apr 3, 2013

Replies: 2

Views: 2K

Graduate What is the equation for gravitational time dilation?

Apr 3, 2013 · Replies 9 · Apr 3, 2013

Replies: 9

Views: 2K

Undergrad Gravitational Time Dilation: Equation & Calculation

Apr 3, 2013 · Replies 1 · Apr 3, 2013

Replies: 1

Views: 1K

Graduate Length contraction occurs infront of AND behind you?

Apr 3, 2013 · Replies 3 · Apr 3, 2013

Replies: 3

Views: 2K

Graduate How is acceleration equivalent to rest in a gravitational field

Apr 1, 2013 · Replies 12 · Apr 3, 2013

Replies: 12

Views: 2K

Graduate Can we extract energy from a gravitational field ?

Apr 2, 2013 · Replies 19 · Apr 3, 2013

Replies: 19

Views: 4K

Undergrad Special and general relativity

Apr 3, 2013 · Replies 7 · Apr 3, 2013

Replies: 7

Views: 2K

Undergrad Derivation of lorentz transformation

Apr 3, 2013 · Replies 3 · Apr 3, 2013

Replies: 3

Views: 2K

Graduate Relativity of simultaneity through lorentz transformation

Apr 3, 2013 · Replies 5 · Apr 3, 2013

Replies: 5

Views: 2K

Graduate Maxwell's equations in curved space-time

Apr 1, 2013 · Replies 24 · Apr 3, 2013

Replies: 24

Views: 8K

Graduate Explanation of m&m experiment through sr

Apr 2, 2013 · Replies 25 · Apr 3, 2013

Replies: 25

Views: 4K

Graduate Speed of light vs universe expansion

Apr 2, 2013 · Replies 6 · Apr 2, 2013

Replies: 6

Views: 2K

Graduate Is the speed of light infinite?

Mar 20, 2013 · Replies 48 · Apr 2, 2013

2

Replies: 48

Views: 8K

Graduate Expanding/Collapsing Universe vs Bouncing Ball: Kinetic & Potential Energy?

Apr 2, 2013 · Replies 4 · Apr 2, 2013

Replies: 4

Views: 2K

Graduate Total velocity of resting object on earth from universal frame of refe

Apr 2, 2013 · Replies 6 · Apr 2, 2013

Replies: 6

Views: 2K

Graduate GR Relation Reduces to Newtonian: Limits Explained

Apr 2, 2013 · Replies 1 · Apr 2, 2013

Replies: 1

Views: 2K

Graduate Does Bending Space/Time Have Credibility?

Apr 2, 2013 · Replies 3 · Apr 2, 2013

Replies: 3

Views: 2K

Graduate Poincare Transformation: Understanding its Properties and Group Structure

Apr 1, 2013 · Replies 2 · Apr 2, 2013

Replies: 2

Views: 2K

Undergrad Acceleration vs. uniform motion: There are three rockets in deep space

Apr 1, 2013 · Replies 11 · Apr 1, 2013

Replies: 11

Views: 3K

Graduate Black Holes in String Theory - calculation help needed

Mar 31, 2013 · Replies 8 · Apr 1, 2013

Replies: 8

Views: 2K

Graduate So you are driving a car at (almost) the speed of light

Mar 31, 2013 · Replies 7 · Apr 1, 2013

Replies: 7

Views: 2K

Undergrad Is There a Connection Between Time and Size in Physics?

Apr 1, 2013 · Replies 4 · Apr 1, 2013

Replies: 4

Views: 1K

Relativity

The theory of relativity, formulated by Albert Einstein, comprises two fundamental theories—special and general relativity. Special relativity, proposed in 1905, redefines our understanding of space and time by asserting the constancy of the speed of light for all observers and introducing concepts like time dilation and length contraction.

General relativity, presented in 1915, extends these principles to incorporate gravity. It describes gravity as the curvature of spacetime caused by massive objects, leading to phenomena like gravitational time dilation and the prediction of black holes. Einstein's equations have been consistently validated through experiments and observations, profoundly influencing our comprehension of the universe's fabric and dynamics.

Top