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 Understanding the Paradox of Mass in Relativity | Physics World

Oct 29, 2005 · Replies 3 · Oct 30, 2005

Replies: 3

Views: 2K

Graduate Is Warp Drive Really Possible with the Help of Negative Energy?

Apr 25, 2005 · Replies 29 · Oct 30, 2005

Replies: 29

Views: 10K

Undergrad Where Does the Extra Energy Come From in a Gravitational Field?

Oct 29, 2005 · Replies 12 · Oct 30, 2005

Replies: 12

Views: 2K

Undergrad Physics Theories: Do Photons Have Mass in Motion?

Oct 26, 2005 · Replies 9 · Oct 29, 2005

Replies: 9

Views: 3K

Graduate Breaking the Sound Barrier: Ze Optical Boom by Albert Einstein ze Sird

Oct 22, 2005 · Replies 19 · Oct 29, 2005

Replies: 19

Views: 6K

Graduate The Secrets of Antimatter and Fast Propelling Technology

Oct 23, 2005 · Replies 6 · Oct 28, 2005

Replies: 6

Views: 2K

Graduate GR & Coriolis Forces: Inertial Trajectories & Resources

Oct 21, 2005 · Replies 4 · Oct 28, 2005

Replies: 4

Views: 2K

Graduate Simplest question to articulate concepts in General Relativity

Oct 27, 2005 · Replies 2 · Oct 27, 2005

Replies: 2

Views: 2K

Graduate Question about rotating frames

Oct 27, 2005 · Replies 7 · Oct 27, 2005

Replies: 7

Views: 2K

Graduate STR, one-way speed of light and conventionality

Oct 24, 2005 · Replies 16 · Oct 27, 2005

Replies: 16

Views: 4K

Graduate 4D spacetime Light cone Twins paradox

Oct 26, 2005 · Replies 30 · Oct 27, 2005

2

Replies: 30

Views: 6K

Graduate Solve Eq. (9.58) on Schutz Page 246 - A First Course in GR

Oct 25, 2005 · Replies 2 · Oct 27, 2005

Replies: 2

Views: 2K

Graduate How Can Light Have Speed Yet Be Timeless?

Oct 26, 2005 · Replies 8 · Oct 27, 2005

Replies: 8

Views: 2K

Graduate Is Time Truly the Fourth Dimension or Something Else Entirely?

Oct 26, 2005 · Replies 2 · Oct 26, 2005

Replies: 2

Views: 3K

Graduate Old Book Review - Classical Charged Particles

Oct 22, 2005 · Replies 1 · Oct 26, 2005

Replies: 1

Views: 3K

Graduate What causes the apparent falling of objects in general relativity?

Oct 24, 2005 · Replies 13 · Oct 26, 2005

Replies: 13

Views: 4K

Graduate Can Chromatic Aberration Create Gravitational Fields?

Oct 10, 2005 · Replies 20 · Oct 25, 2005

Replies: 20

Views: 5K

Graduate Exploring the Mass and Temperature of a Slower Photon: Half the Speed of Light

Oct 4, 2005 · Replies 3 · Oct 24, 2005

Replies: 3

Views: 4K

High School Acceleration Due to Gravity: Facts & Qs

Oct 23, 2005 · Replies 12 · Oct 24, 2005

Replies: 12

Views: 3K

Graduate How to Calculate the Length of Energy-Momentum Four-Vectors?

Oct 22, 2005 · Replies 5 · Oct 24, 2005

Replies: 5

Views: 4K

Graduate Is light necessary for the existence of spacetime?

Oct 22, 2005 · Replies 5 · Oct 23, 2005

Replies: 5

Views: 3K

Graduate Is the Maximum Magnetic Field in Neutron Stars Related to Spacetime Curvature?

Oct 23, 2005 · Replies 1 · Oct 23, 2005

Replies: 1

Views: 4K

Graduate Origin of 4-momentum - Hisorical Ref.

Oct 23, 2005 · Replies 4 · Oct 23, 2005

Replies: 4

Views: 2K

Graduate Solving Schutz Problem 23 (a & b): T^{\mu ν} Identity

Oct 22, 2005 · Replies 6 · Oct 22, 2005

Replies: 6

Views: 5K

Graduate What happens to time near a black hole's event horizon?

Oct 22, 2005 · Replies 2 · Oct 22, 2005

Replies: 2

Views: 18K

Undergrad How Does Relativity Affect Perception of Time and Space?

Oct 22, 2005 · Replies 3 · Oct 22, 2005

Replies: 3

Views: 3K

Undergrad Relativity and the Laser Beam: Is Faster-Than-Light Travel Possible?

Oct 20, 2005 · Replies 4 · Oct 22, 2005

Replies: 4

Views: 2K

Graduate The Limitless Fascination of Black Hole Mass: How Big Can It Get?

Oct 21, 2005 · Replies 11 · Oct 22, 2005

Replies: 11

Views: 3K

Graduate Acceleration in Special Relativity

Oct 21, 2005 · Replies 4 · Oct 22, 2005

Replies: 4

Views: 4K

Geometry and the Universe - A symposium on GR

Oct 19, 2005 · Replies 2 · Oct 21, 2005

Replies: 2

Views: 4K

Gravity Probe-B Completes Mission

Oct 11, 2005 · Replies 7 · Oct 21, 2005

Replies: 7

Views: 2K

Graduate Question posed in a science magazine

Oct 17, 2005 · Replies 6 · Oct 20, 2005

Replies: 6

Views: 12K

Graduate GR: A First Course Q: What is "That Region" on Page 226?

Oct 18, 2005 · Replies 4 · Oct 19, 2005

Replies: 4

Views: 3K

Graduate Does the Force Propelling a Spaceship Affect the Speed of Light Emitted from It?

Oct 18, 2005 · Replies 1 · Oct 18, 2005

Replies: 1

Views: 2K

Graduate Another Speed Of Light Travel Scenario

Oct 18, 2005 · Replies 5 · Oct 18, 2005

Replies: 5

Views: 3K

Graduate Schutz, page 226 - Black hole formation

Oct 13, 2005 · Replies 8 · Oct 17, 2005

Replies: 8

Views: 3K

Graduate Unification of space and matter

Oct 16, 2005 · Replies 5 · Oct 17, 2005

Replies: 5

Views: 3K

Undergrad Why is the speed of light what it is?

Oct 17, 2005 · Replies 3 · Oct 17, 2005

Replies: 3

Views: 2K

Graduate GR Contest: Uncovering the First Evidence of Revision

Oct 12, 2005 · Replies 8 · Oct 16, 2005

Replies: 8

Views: 2K

Graduate Verifying Equations 9.45 & 9.46 in Schutz, pg. 224

Oct 13, 2005 · Replies 2 · Oct 16, 2005

Replies: 2

Views: 2K

Graduate Nothing can exceed the speed of light

Oct 12, 2005 · Replies 20 · Oct 16, 2005

Replies: 20

Views: 4K

High School Is the Sun Actually Orbiting the Earth?

Oct 13, 2005 · Replies 11 · Oct 14, 2005

Replies: 11

Views: 3K

Graduate Energy of a photon in different frames.

Oct 11, 2005 · Replies 29 · Oct 13, 2005

Replies: 29

Views: 6K

Graduate Stephen Hawking and time travel

Oct 12, 2005 · Replies 5 · Oct 13, 2005

Replies: 5

Views: 6K

Graduate Faster Than Light Communication/Transportation Not Possible?

Aug 5, 2005 · Replies 33 · Oct 13, 2005

2

Replies: 33

Views: 6K

Graduate Pastpaper on GR: Get Help & Resources

Oct 11, 2005 · Replies 10 · Oct 12, 2005

Replies: 10

Views: 2K

Graduate Pp waves - Null dust solutions

Oct 12, 2005 · Replies 1 · Oct 12, 2005

Replies: 1

Views: 2K

Graduate Lorentz contraction in Special Relativity

Sep 13, 2005 · Replies 12 · Oct 11, 2005

Replies: 12

Views: 4K

Graduate Why is 4-velocity Vector u'=dx^i/ds?

Sep 22, 2005 · Replies 19 · Oct 11, 2005

Replies: 19

Views: 8K

Graduate Ricci Decomposition: Questions & Answers

Oct 10, 2005 · Replies 3 · Oct 11, 2005

Replies: 3

Views: 6K

Graduate Exploring the Interior/Exterior of a 3 Sphere in GR

Oct 11, 2005 · Replies 2 · Oct 11, 2005

Replies: 2

Views: 2K

Graduate Question on Weak Energy Condition

Oct 10, 2005 · Replies 2 · Oct 10, 2005

Replies: 2

Views: 3K

Graduate What Happens to Mass During the Annihilation of an Electron-Positron Pair?

Oct 8, 2005 · Replies 10 · Oct 9, 2005

Replies: 10

Views: 4K

Graduate Solving a Relativity Problem: Two MAsses in Motion

Oct 7, 2005 · Replies 8 · Oct 8, 2005

Replies: 8

Views: 2K

Graduate Does homogeneity infer isotropism?

Oct 1, 2005 · Replies 6 · Oct 8, 2005

Replies: 6

Views: 3K

Undergrad Converting Energy to Mass: Is it Possible?

Oct 7, 2005 · Replies 3 · Oct 8, 2005

Replies: 3

Views: 2K

Graduate The distance-dependent nature behind lorentz time-transformation

Oct 4, 2005 · Replies 5 · Oct 7, 2005

Replies: 5

Views: 4K

Graduate How do you verify that v/c=pc/E?

Oct 4, 2005 · Replies 5 · Oct 7, 2005

Replies: 5

Views: 10K

Graduate How to deal with the index in Einstein summation?

Oct 6, 2005 · Replies 6 · Oct 7, 2005

Replies: 6

Views: 3K

Undergrad Is cheating going on in Relativity?

Sep 13, 2005 · Replies 56 · Oct 6, 2005

2

Replies: 56

Views: 7K

Graduate What is the Folding Space Theory and its Potential Applications?

Oct 5, 2005 · Replies 10 · Oct 6, 2005

Replies: 10

Views: 12K

Graduate Length Contraction & Angled Motion

Oct 6, 2005 · Replies 2 · Oct 6, 2005

Replies: 2

Views: 2K

Graduate Proving Relativistic Kinetic Energy: (1/2)*(gamma)mv^2

Oct 4, 2005 · Replies 6 · Oct 6, 2005

Replies: 6

Views: 3K

Graduate Simplifying Equations for Lorentz Boosts with Small Beta

Oct 4, 2005 · Replies 7 · Oct 6, 2005

Replies: 7

Views: 3K

Graduate Question from Schutz, A First Course in GR

Sep 27, 2005 · Replies 24 · Oct 5, 2005

Replies: 24

Views: 7K

Graduate Time Dilation and Differential Aging

Oct 1, 2005 · Replies 31 · Oct 5, 2005

2

Replies: 31

Views: 6K

Graduate Relativity and Energy Transfer via Radiation

Oct 2, 2005 · Replies 7 · Oct 5, 2005

Replies: 7

Views: 3K

Graduate Question on Phenomenology of Einsteins Field Equations

Oct 1, 2005 · Replies 6 · Oct 5, 2005

Replies: 6

Views: 3K

High School Understanding Time Dilation: Explained in Simple Terms for Physics Enthusiasts

Oct 4, 2005 · Replies 1 · Oct 4, 2005

Replies: 1

Views: 2K

Einstein And A Century Of Time

Sep 28, 2005 · Replies 2 · Oct 4, 2005

Replies: 2

Views: 2K

Graduate Dual to Tensor: Meaning & -1/6 Explained

Oct 3, 2005 · Replies 1 · Oct 3, 2005

Replies: 1

Views: 3K

Graduate Advice on GR book specific to my needs

Oct 2, 2005 · Replies 2 · Oct 3, 2005

Replies: 2

Views: 2K

Graduate Is the Speed of Light Affecting Relativistic Phenomena?

Oct 2, 2005 · Replies 8 · Oct 3, 2005

Replies: 8

Views: 5K

Graduate The Black Hole in a Spatially Compact Spacetime

Sep 27, 2005 · Replies 2 · Oct 2, 2005

Replies: 2

Views: 2K

Graduate Einstein's Clock Synchronization Convention

Aug 31, 2005 · Replies 108 · Oct 1, 2005

4

Replies: 108

Views: 18K

Graduate Relativistic contraction happens which way?

Sep 3, 2005 · Replies 14 · Sep 30, 2005

Replies: 14

Views: 3K

Graduate Should the Special Relativity Principle be Reduced to a Tautology?

Sep 25, 2005 · Replies 4 · Sep 28, 2005

Replies: 4

Views: 3K

Graduate Closed Universe Twins Paradox: No Acceleration?

Sep 27, 2005 · Replies 5 · Sep 27, 2005

Replies: 5

Views: 3K

Undergrad Exceeding the Speed of Light: A Surprising Result with Two Squares on Paper

Aug 28, 2005 · Replies 14 · Sep 26, 2005

Replies: 14

Views: 6K

Graduate Do gravity waves get bent by gravity?

Sep 21, 2005 · Replies 13 · Sep 26, 2005

Replies: 13

Views: 9K

Undergrad The Constant Speed of Light: Investigating its Properties

Sep 25, 2005 · Replies 4 · Sep 26, 2005

Replies: 4

Views: 3K

Undergrad Curtailed length and the twin paradox

Sep 25, 2005 · Replies 4 · Sep 25, 2005

Replies: 4

Views: 2K

Graduate Do Primes in Lorentz Transformations Differ from Relativistic Effect Equations?

Sep 24, 2005 · Replies 10 · Sep 25, 2005

Replies: 10

Views: 3K

Graduate Hawking, new theory on information paradox right or qwrong?

Sep 24, 2005 · Replies 3 · Sep 24, 2005

Replies: 3

Views: 4K

Graduate Rank of Tensors: Questions & Answers

Sep 22, 2005 · Replies 6 · Sep 24, 2005

Replies: 6

Views: 18K

Graduate Mysteries of the Big Bang: Is the Universe Made from Nothing?

Sep 23, 2005 · Replies 6 · Sep 24, 2005

Replies: 6

Views: 2K

Graduate GRTensorJ - Books (physics/0509108)

Sep 13, 2005 · Replies 12 · Sep 21, 2005

Replies: 12

Views: 4K

Graduate Why is gravity assumed to be a wave

Sep 20, 2005 · Replies 5 · Sep 20, 2005

Replies: 5

Views: 4K

Graduate Coordinate transformations and acceleration

Sep 20, 2005 · Replies 4 · Sep 20, 2005

Replies: 4

Views: 3K

Graduate What is the correct derivation of the relativistic rocket equation?

Sep 20, 2005 · Replies 11 · Sep 20, 2005

Replies: 11

Views: 17K

Graduate Is gravity just the temporal gradients effect

Sep 19, 2005 · Replies 6 · Sep 20, 2005

Replies: 6

Views: 5K

Graduate A Supposed alternative to GR I feel to be NonsenseClarification please

Sep 19, 2005 · Replies 4 · Sep 20, 2005

Replies: 4

Views: 2K

Graduate What Are Contravariant and Covariant Tensors in Relativity?

Sep 19, 2005 · Replies 2 · Sep 20, 2005

Replies: 2

Views: 2K

Graduate Sir Hermann Bondi (1919 - 2005)

Sep 19, 2005 · Replies 1 · Sep 19, 2005

Replies: 1

Views: 2K

Need Help Identifying Errors on My Website?

Sep 13, 2005 · Replies 22 · Sep 19, 2005

Replies: 22

Views: 5K

Graduate Antisymmetric 4-Tensor: Hodge/Duality Transformation Explained

Sep 17, 2005 · Replies 3 · Sep 17, 2005

Replies: 3

Views: 4K

Undergrad Accelerated charges loose energy

Sep 16, 2005 · Replies 2 · Sep 16, 2005

Replies: 2

Views: 2K

High School What are gravitational lenses?

Sep 14, 2005 · Replies 4 · Sep 16, 2005

Replies: 4

Views: 2K

Undergrad Gravity Probe B Results: Preliminary Info

Sep 9, 2005 · Replies 3 · Sep 16, 2005

Replies: 3

Views: 2K

Undergrad Curvature of light and its effect on reality

Sep 15, 2005 · Replies 3 · Sep 15, 2005

Replies: 3

Views: 5K

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