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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.

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Lorentz Transformations and their Inverse

Jan 22, 2007 · Replies 47 · Jan 24, 2007

2

Replies: 47

Views: 13K

Mainstream treatment for relativistic Doppler effect under accelerated motion?

Jan 20, 2007 · Replies 22 · Jan 23, 2007

Replies: 22

Views: 7K

Are some vacuums more slippery than others?

Jan 16, 2007 · Replies 10 · Jan 23, 2007

Replies: 10

Views: 3K

Why cant forces travel faster than light speed?

Jan 20, 2007 · Replies 8 · Jan 22, 2007

Replies: 8

Views: 7K

Does space and matter co-exist?

Jan 8, 2007 · Replies 4 · Jan 22, 2007

Replies: 4

Views: 4K

Can Relativity Explain the Confusion of the Twins Paradox?

Sep 10, 2006 · Replies 129 · Jan 22, 2007

5

Replies: 129

Views: 14K

Question on infinite curvature of the universe

Jan 22, 2007 · Replies 2 · Jan 22, 2007

Replies: 2

Views: 2K

Length Contraction, Time Dilation and The Principle of Relativity

Dec 31, 2006 · Replies 18 · Jan 22, 2007

Replies: 18

Views: 6K

Time dialation at Earth's center

Jan 18, 2007 · Replies 14 · Jan 22, 2007

Replies: 14

Views: 4K

Understanding E=mc^2: Explained in Plain English | Junior's Dilemma

Jan 21, 2007 · Replies 6 · Jan 21, 2007

Replies: 6

Views: 3K

Derivation of the Relativistic Doppler Effect

Jan 11, 2007 · Replies 25 · Jan 20, 2007

Replies: 25

Views: 14K

Relativity, Quantum Mechanics, & the Link Between Energy & Time

Jan 20, 2007 · Replies 3 · Jan 20, 2007

Replies: 3

Views: 2K

Exploring Black Holes: Introduction to General Relativity

Jan 20, 2007 · Replies 2 · Jan 20, 2007

Replies: 2

Views: 5K

Can a field disturb the geometry of a space?

Jan 17, 2007 · Replies 12 · Jan 20, 2007

Replies: 12

Views: 2K

Software for celestial mechanics

Jan 17, 2007 · Replies 9 · Jan 19, 2007

Replies: 9

Views: 6K

A person travelling through a geodesic.

Jan 18, 2007 · Replies 1 · Jan 18, 2007

Replies: 1

Views: 2K

GR without Geommetry or coordinates.

Jan 12, 2007 · Replies 17 · Jan 18, 2007

Replies: 17

Views: 4K

How to apply e=mc^2 to a photon?

Jan 11, 2007 · Replies 38 · Jan 18, 2007

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Replies: 38

Views: 8K

What does a light particle see?

Jan 17, 2007 · Replies 9 · Jan 18, 2007

Replies: 9

Views: 3K

Can Sound Travel Faster Than Light?

Jan 17, 2007 · Replies 4 · Jan 17, 2007

Replies: 4

Views: 2K

Newbie question about time dilation

Jan 17, 2007 · Replies 1 · Jan 17, 2007

Replies: 1

Views: 3K

Explore Space-Proper-Time Diagrams - Where's the Catch?

Jan 12, 2007 · Replies 19 · Jan 17, 2007

Replies: 19

Views: 8K

Should a General Relativitist Study Math Proofs?

Jan 13, 2007 · Replies 10 · Jan 17, 2007

Replies: 10

Views: 3K

Can quadropoles slow down gravitational radiation?

Jan 16, 2007 · Replies 13 · Jan 17, 2007

Replies: 13

Views: 4K

Is There a Universal Group Contraction for Lorentz and Galilean Groups?

Jan 15, 2007 · Replies 6 · Jan 16, 2007

Replies: 6

Views: 3K

Objects near the speed of light

Jan 16, 2007 · Replies 9 · Jan 16, 2007

Replies: 9

Views: 4K

Superluminal Velocity: Reports & Implications

Jan 12, 2007 · Replies 10 · Jan 16, 2007

Replies: 10

Views: 5K

How Accurate Is the Math in the Hafele and Keating Experiment Analysis?

Feb 6, 2004 · Replies 3 · Jan 16, 2007

Replies: 3

Views: 4K

How Does Mass Influence the Curvature of Spacetime?

Jan 14, 2007 · Replies 11 · Jan 15, 2007

Replies: 11

Views: 3K

Is the schwarzchild radius a radius of curvature?

Jan 15, 2007 · Replies 9 · Jan 15, 2007

Replies: 9

Views: 7K

Twin Paradox: Special Relativity Theory Explained

Jan 14, 2007 · Replies 37 · Jan 15, 2007

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Replies: 37

Views: 8K

Formal definition of the Equivalence Principle(s)

Jan 15, 2007 · Replies 3 · Jan 15, 2007

Replies: 3

Views: 3K

Relativity, force, acceleration, momentum

Jan 12, 2007 · Replies 5 · Jan 15, 2007

Replies: 5

Views: 2K

What wrong with Lorent transformation here?

Jan 14, 2007 · Replies 3 · Jan 14, 2007

Replies: 3

Views: 2K

Proper frame of reference and the formation of black holes

Jan 12, 2007 · Replies 1 · Jan 13, 2007

Replies: 1

Views: 4K

Radio Wave Length & Gravitational Force

Jan 12, 2007 · Replies 8 · Jan 12, 2007

Replies: 8

Views: 3K

Can Concentrated Light Create Gravity by Warping Space-Time?

Jan 8, 2007 · Replies 34 · Jan 12, 2007

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Replies: 34

Views: 6K

Relativistic dynamics as a semantic problem

Jan 9, 2007 · Replies 6 · Jan 12, 2007

Replies: 6

Views: 3K

Gravitational Time Dilation: A Thought Experiment

Jan 1, 2007 · Replies 117 · Jan 11, 2007

4

Replies: 117

Views: 21K

Is the Electron Paper from Annales de la Fondation Louis de Broglie Reliable?

Jan 9, 2007 · Replies 6 · Jan 10, 2007

Replies: 6

Views: 4K

What is the significance of VSL Theory in modern physics?

Jan 10, 2007 · Replies 4 · Jan 10, 2007

Replies: 4

Views: 4K

An extended look at light in SR

Jan 9, 2007 · Replies 15 · Jan 10, 2007

Replies: 15

Views: 3K

A bit introduction to foliation in GR and some question.

Jan 9, 2007 · Replies 1 · Jan 10, 2007

Replies: 1

Views: 3K

The Relativity of Time Dilation: Is Time Dilation Truly Relative?

Jan 9, 2007 · Replies 6 · Jan 10, 2007

Replies: 6

Views: 4K

Fast object moving along a table

Jan 9, 2007 · Replies 8 · Jan 9, 2007

Replies: 8

Views: 4K

What Alternative Term Can Replace Non-Proper Length in Relativistic Terminology?

Jan 7, 2007 · Replies 2 · Jan 9, 2007

Replies: 2

Views: 2K

Gravitational and inertial mass

Jan 7, 2007 · Replies 13 · Jan 9, 2007

Replies: 13

Views: 4K

Time a fourth dimension? is a boost a rotation?

Jan 7, 2007 · Replies 16 · Jan 8, 2007

Replies: 16

Views: 4K

Consistent with special relativity?

Jan 8, 2007 · Replies 10 · Jan 8, 2007

Replies: 10

Views: 3K

A mechanical system in special relativity

Dec 29, 2006 · Replies 23 · Jan 8, 2007

Replies: 23

Views: 4K

Relativistic Balance: Solving Problem w/Cube & Sphere

Jun 28, 2006 · Replies 20 · Jan 8, 2007

Replies: 20

Views: 4K

Energy requirements for a relativity launcher

Jan 8, 2007 · Replies 2 · Jan 8, 2007

Replies: 2

Views: 2K

Ageless photon. do photons travel through time?

Jan 8, 2007 · Replies 21 · Jan 8, 2007

Replies: 21

Views: 10K

What is an orthogonal chart in the context of Gaussian Normal Coordinates?

Jan 3, 2007 · Replies 6 · Jan 8, 2007

Replies: 6

Views: 24K

What Happens When Galaxies Recede at Speeds Approaching Light?

Nov 7, 2006 · Replies 9 · Jan 8, 2007

Replies: 9

Views: 4K

Physics laws and expansion of universe?

Jan 7, 2007 · Replies 7 · Jan 8, 2007

Replies: 7

Views: 3K

Relativistic dynamics without conservation laws

Jan 7, 2007 · Replies 7 · Jan 8, 2007

Replies: 7

Views: 3K

Light as a Relativistic invariant

Jan 6, 2007 · Replies 7 · Jan 7, 2007

Replies: 7

Views: 4K

Is Light the Ultimate Barrier to Understanding Black Holes and Gravity?

Dec 28, 2006 · Replies 52 · Jan 6, 2007

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Replies: 52

Views: 7K

Age of the Universe: 13.7 Billion Years Old?

Jan 4, 2007 · Replies 12 · Jan 6, 2007

Replies: 12

Views: 3K

How Does Gravitational Time Dilation Work in a Uniform Field?

Jan 6, 2007 · Replies 2 · Jan 6, 2007

Replies: 2

Views: 5K

Proving Parallelism of Orthogonal Vectors to Null Vectors

Jan 4, 2007 · Replies 6 · Jan 5, 2007

Replies: 6

Views: 10K

Do Light Cones Truly Tip Over in General Relativity?

Oct 27, 2006 · Replies 39 · Jan 5, 2007

2

Replies: 39

Views: 15K

Some strange questions about light

Sep 17, 2006 · Replies 44 · Jan 5, 2007

2

Replies: 44

Views: 9K

Suppose we have a proton and electron, separated with a distance d

Jan 4, 2007 · Replies 9 · Jan 5, 2007

Replies: 9

Views: 3K

Proper time or proper time interval

Jan 4, 2007 · Replies 3 · Jan 4, 2007

Replies: 3

Views: 7K

Are two line derivations harmful in teaching special relativity

Jan 2, 2007 · Replies 8 · Jan 4, 2007

Replies: 8

Views: 4K

Understanding Gravity: Force or Space Warp?

Jan 3, 2007 · Replies 6 · Jan 4, 2007

Replies: 6

Views: 2K

Tests of equivalence principle based on fluid mechanics

Jan 2, 2007 · Replies 4 · Jan 3, 2007

Replies: 4

Views: 3K

Kennedy & Thorndike - Lorentz-Fitzgerald Contraction Experiment

Dec 31, 2006 · Replies 4 · Jan 3, 2007

Replies: 4

Views: 3K

Who Experiences More Proper Time When Falling into a Black Hole with a Jetpack?

Dec 19, 2006 · Replies 17 · Jan 2, 2007

Replies: 17

Views: 5K

Does a Gravitational Field Contribute to itself

Jan 1, 2007 · Replies 8 · Jan 2, 2007

Replies: 8

Views: 3K

Clock Synchronization and the Effects of Gravity in a Two-Story Building

Jan 1, 2007 · Replies 10 · Jan 1, 2007

Replies: 10

Views: 2K

A problem concerning the Lorentz transformations

Jan 1, 2007 · Replies 8 · Jan 1, 2007

Replies: 8

Views: 3K

Is an exact solution for the gravitational field of a galaxy possible?

Dec 30, 2006 · Replies 5 · Jan 1, 2007

Replies: 5

Views: 4K

Light Clock Experiment Flawed?

Dec 30, 2006 · Replies 15 · Jan 1, 2007

Replies: 15

Views: 6K

The Penny Wheeel Diagram Confusion

Dec 31, 2006 · Replies 1 · Dec 31, 2006

Replies: 1

Views: 3K

Spinning disk and the speed of light

Dec 24, 2006 · Replies 41 · Dec 29, 2006

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Replies: 41

Views: 19K

What's gravity from the Quantum point of view

Aug 27, 2006 · Replies 16 · Dec 29, 2006

Replies: 16

Views: 4K

Can Light Define the Structure of Spacetime?

Dec 29, 2006 · Replies 3 · Dec 29, 2006

Replies: 3

Views: 3K

Are there any theories about black holes existing within a larger black hole?

Nov 9, 2006 · Replies 22 · Dec 29, 2006

Replies: 22

Views: 5K

Will the 2-Body Problem in General Relativity Require Both Bodies' Metrics?

Dec 27, 2006 · Replies 8 · Dec 29, 2006

Replies: 8

Views: 4K

How Much Mass Does an Object Gain at High Speeds?

Dec 29, 2006 · Replies 5 · Dec 29, 2006

Replies: 5

Views: 6K

Is the Speed of Gravity Instantaneous or Limited by Light?

Dec 27, 2006 · Replies 10 · Dec 28, 2006

Replies: 10

Views: 4K

Does velocity dammage e=mc^2?

Dec 27, 2006 · Replies 10 · Dec 28, 2006

Replies: 10

Views: 3K

Time Travel using the gravitational field of a circulating light beam

Dec 12, 2006 · Replies 28 · Dec 27, 2006

Replies: 28

Views: 13K

Lorentz-Einstein transformation

Dec 8, 2006 · Replies 40 · Dec 26, 2006

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Replies: 40

Views: 11K

Any research left to do in Special Relativity?

Dec 25, 2006 · Replies 6 · Dec 26, 2006

Replies: 6

Views: 5K

Lorentz Transforms Simplified: Understanding Ordinary Math and Physics

Dec 5, 2006 · Replies 43 · Dec 26, 2006

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Replies: 43

Views: 7K

With the Lorentz-Einstein transformations in hands

Dec 23, 2006 · Replies 11 · Dec 26, 2006

Replies: 11

Views: 3K

Hidden variable in SR and GR Relativity?

Dec 25, 2006 · Replies 5 · Dec 26, 2006

Replies: 5

Views: 3K

Distance in accelerated frames

Dec 20, 2006 · Replies 5 · Dec 26, 2006

Replies: 5

Views: 4K

How Does Rotational Symmetry Affect Gravitational Wave Emission?

Dec 21, 2006 · Replies 20 · Dec 26, 2006

Replies: 20

Views: 5K

Test Your Knowledge: Visit from a Scientist on Relativity

Dec 14, 2006 · Replies 42 · Dec 25, 2006

2

Replies: 42

Views: 23K

Gravitation waves from two objects

Nov 23, 2006 · Replies 14 · Dec 23, 2006

Replies: 14

Views: 4K

Thrown Watch Problem: Does It Matter How Fast/High?

Dec 22, 2006 · Replies 2 · Dec 23, 2006

Replies: 2

Views: 2K

Gravitational lenses and objects in front of them

Dec 21, 2006 · Replies 7 · Dec 22, 2006

Replies: 7

Views: 3K

Does Gravity Bend Light or Curve Space-Time?

Feb 11, 2006 · Replies 40 · Dec 21, 2006

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Replies: 40

Views: 8K

Is There Validity to the Controversial Anisotropic Speed of Light Paper?

Dec 13, 2006 · Replies 6 · Dec 21, 2006

Replies: 6

Views: 4K

Speed of light, Mass, And black Holes

Dec 20, 2006 · Replies 1 · Dec 20, 2006

Replies: 1

Views: 3K

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.

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