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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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Is Proving Einstein Wrong a Serious Challenge or Just a Fun Debate?

Aug 18, 2005 · Replies 4 · Aug 24, 2005

Replies: 4

Views: 2K

Another Hairbrained FTL Scheme

Aug 19, 2005 · Replies 7 · Aug 24, 2005

Replies: 7

Views: 3K

E = mc^2 is Not Einstein's Discovery?

Aug 18, 2005 · Replies 29 · Aug 24, 2005

Replies: 29

Views: 10K

A better way to imagine the time space continuum.

Aug 22, 2005 · Replies 6 · Aug 24, 2005

Replies: 6

Views: 3K

Speed of Light: Independent to Observer?

Aug 19, 2005 · Replies 18 · Aug 24, 2005

Replies: 18

Views: 3K

Linear vs Sagnac: Examining Arrival Time Differences

Aug 3, 2005 · Replies 16 · Aug 23, 2005

Replies: 16

Views: 5K

Unreliability of Hafele & Keating Experiment: A Critical Analysis

Aug 21, 2005 · Replies 5 · Aug 23, 2005

Replies: 5

Views: 4K

Why is the Speed of Light Squared in Special Relativity?

Jun 29, 2005 · Replies 39 · Aug 23, 2005

2

Replies: 39

Views: 11K

Answer: Rest Energy of Electron or Positron: 0.51 MeV

Aug 17, 2005 · Replies 17 · Aug 22, 2005

Replies: 17

Views: 21K

Can the speed of light be considered an absolute?

Aug 20, 2005 · Replies 4 · Aug 21, 2005

Replies: 4

Views: 4K

Why is the Speed of Light Squared in E=mc^2?

Aug 14, 2005 · Replies 78 · Aug 21, 2005

3

Replies: 78

Views: 22K

Speed Of Light and stimilation

Aug 20, 2005 · Replies 2 · Aug 20, 2005

Replies: 2

Views: 2K

Question from Rindler's Introduction to Special Relativity

Aug 19, 2005 · Replies 5 · Aug 20, 2005

Replies: 5

Views: 4K

How Time Stands Still: r=GM/c^2

Aug 12, 2005 · Replies 2 · Aug 20, 2005

Replies: 2

Views: 2K

Proving Energy-Momentum Tesor Relation

Aug 16, 2005 · Replies 2 · Aug 19, 2005

Replies: 2

Views: 2K

Reimagining Science: Space, Time, and Gravity in a New Light

Aug 18, 2005 · Replies 2 · Aug 18, 2005

Replies: 2

Views: 2K

The attraction of light by gravity

Aug 10, 2005 · Replies 4 · Aug 17, 2005

Replies: 4

Views: 3K

Everything in the universe is related

Aug 14, 2005 · Replies 10 · Aug 17, 2005

Replies: 10

Views: 3K

What Explains the Variation in Gamma-Ray Burst Spectral Time Lags?

Aug 15, 2005 · Replies 6 · Aug 16, 2005

Replies: 6

Views: 3K

Will Gravitons Redefine Our Understanding of the Electromagnetic Spectrum?

Aug 16, 2005 · Replies 7 · Aug 16, 2005

Replies: 7

Views: 3K

Beginner Help on Minkowski Space (and others)

Aug 15, 2005 · Replies 2 · Aug 15, 2005

Replies: 2

Views: 10K

How do you explain the twin paradox to a friend

Aug 6, 2005 · Replies 2 · Aug 13, 2005

Replies: 2

Views: 4K

Some conceptual questions on SR

Aug 12, 2005 · Replies 14 · Aug 13, 2005

Replies: 14

Views: 3K

Traveling to the Future with Speed of Light - Can it be True?

Aug 11, 2005 · Replies 3 · Aug 12, 2005

Replies: 3

Views: 3K

Einstein's Quest for Unifying SR & GR with EM

Aug 5, 2005 · Replies 2 · Aug 12, 2005

Replies: 2

Views: 2K

Place to discuss the Theory of Relativity

Jul 18, 2005 · Replies 98 · Aug 12, 2005

4

Replies: 98

Views: 14K

Einstein's Belief: Everything Moving at Speed of Light?

Aug 4, 2005 · Replies 7 · Aug 12, 2005

Replies: 7

Views: 5K

Lorentz Contraction of a Rotating Object

Aug 10, 2005 · Replies 15 · Aug 12, 2005

Replies: 15

Views: 6K

Time and the Sound Barrier: How Fast is Too Fast?

Aug 11, 2005 · Replies 9 · Aug 12, 2005

Replies: 9

Views: 3K

What Is Minkowski's Geometric in Relativity

Aug 4, 2005 · Replies 2 · Aug 11, 2005

Replies: 2

Views: 2K

Gravity of Light: Can a Laser Beam Generate Its Own Field?

Aug 10, 2005 · Replies 5 · Aug 11, 2005

Replies: 5

Views: 4K

Escaping Black Holes: Is It Possible?

Aug 8, 2005 · Replies 30 · Aug 11, 2005

2

Replies: 30

Views: 6K

Absolute vs. Relative: Explaining Relativistic Effects

Aug 10, 2005 · Replies 15 · Aug 11, 2005

Replies: 15

Views: 5K

J Baez' The meaning of Einstein's Equations

Aug 10, 2005 · Replies 5 · Aug 11, 2005

Replies: 5

Views: 3K

Is time relative for each observer in motion?

Jun 24, 2005 · Replies 35 · Aug 10, 2005

2

Replies: 35

Views: 6K

How to calculate speed of gravity in GR?

Aug 9, 2005 · Replies 2 · Aug 10, 2005

Replies: 2

Views: 6K

Asking the Big Questions: Gravity Explained

Aug 2, 2005 · Replies 7 · Aug 9, 2005

Replies: 7

Views: 2K

The difference between felt, and unfelt motion.

Aug 6, 2005 · Replies 11 · Aug 9, 2005

Replies: 11

Views: 4K

Why Minkowski spacetime and not Euclidean spacetime?

Aug 6, 2005 · Replies 10 · Aug 8, 2005

Replies: 10

Views: 14K

How do you explain the twin paradox to a friend

Aug 6, 2005 · Replies 3 · Aug 8, 2005

Replies: 3

Views: 5K

Minkowski spacetime interval's Lorentz invariance

Aug 5, 2005 · Replies 2 · Aug 7, 2005

Replies: 2

Views: 12K

General Relativity And Quantum Mechanics

Aug 7, 2005 · Replies 2 · Aug 7, 2005

Replies: 2

Views: 7K

Experiences of particles moving at relativistic speeds in non-vacuum

Aug 7, 2005 · Replies 6 · Aug 7, 2005

Replies: 6

Views: 3K

Does Quickly Moving Object Have More Gravitational Mass?

Aug 6, 2005 · Replies 5 · Aug 6, 2005

Replies: 5

Views: 3K

Resolving the Twin Paradox: A Mathematical Approach

Aug 5, 2005 · Replies 3 · Aug 6, 2005

Replies: 3

Views: 3K

The Basics of General Relativity Explained

Aug 4, 2005 · Replies 3 · Aug 5, 2005

Replies: 3

Views: 2K

Special Relativity Knowledge Challenge (for experts only)

Jul 27, 2005 · Replies 13 · Aug 5, 2005

Replies: 13

Views: 4K

The Speed of Light: Theory of Special Relativity

Jul 30, 2005 · Replies 8 · Aug 4, 2005

Replies: 8

Views: 3K

What in the world does E =mc2 mean?

Jul 15, 2005 · Replies 32 · Aug 4, 2005

2

Replies: 32

Views: 5K

Do Massless Particles Like Gravitons Interact With the Higgs Field?

Aug 2, 2005 · Replies 26 · Aug 4, 2005

Replies: 26

Views: 5K

Energy in a volume changing the geometry

Jul 29, 2005 · Replies 28 · Aug 4, 2005

Replies: 28

Views: 4K

Twin Born On Earth and in Space - Age Difference

Aug 2, 2005 · Replies 8 · Aug 4, 2005

Replies: 8

Views: 2K

Theory of General Relativity: Reason for Heavenly Bodies Creating Spacetime Dent

Aug 3, 2005 · Replies 4 · Aug 3, 2005

Replies: 4

Views: 2K

Gravity Probe B: Gyroscope Orientation and Precession

Aug 2, 2005 · Replies 2 · Aug 3, 2005

Replies: 2

Views: 2K

Understanding Relativistic Kinetic Energy in Lab Experiments

Jul 27, 2005 · Replies 2 · Aug 3, 2005

Replies: 2

Views: 3K

Twin paradox, live via satellite

Jul 31, 2005 · Replies 10 · Aug 2, 2005

Replies: 10

Views: 3K

Questioning Relative Mass Magnification by a Moving Observer

Jul 26, 2005 · Replies 2 · Aug 2, 2005

Replies: 2

Views: 2K

Blackhole decay and gravitational wave

Aug 1, 2005 · Replies 7 · Aug 2, 2005

Replies: 7

Views: 2K

Is the Big Bang Theory Misunderstood in Terms of Expansion and Gravity?

Jul 9, 2005 · Replies 9 · Aug 1, 2005

Replies: 9

Views: 4K

New Paper: GR implies no dark matter

Jul 27, 2005 · Replies 5 · Aug 1, 2005

Replies: 5

Views: 4K

Is the Twin Paradox Misunderstood in Terms of Aging Differences?

Jul 29, 2005 · Replies 5 · Aug 1, 2005

Replies: 5

Views: 3K

Angular momentum at near-c velocities

Jul 23, 2005 · Replies 10 · Jul 30, 2005

Replies: 10

Views: 2K

What are the prerequisites for understanding Lorentz transformations?

Jul 29, 2005 · Replies 4 · Jul 30, 2005

Replies: 4

Views: 4K

Can particles and geometry coexist in gravitational theory?

Jul 28, 2005 · Replies 3 · Jul 28, 2005

Replies: 3

Views: 2K

Fermi-Walker transport - problem with a minus sign

Jul 26, 2005 · Replies 3 · Jul 28, 2005

Replies: 3

Views: 3K

Relativistic Mass: Inertial & Gravitational Effects

Jul 25, 2005 · Replies 16 · Jul 28, 2005

Replies: 16

Views: 6K

On the Relativity of Lengths and Times

Jul 22, 2005 · Replies 4 · Jul 26, 2005

Replies: 4

Views: 3K

Prove rectilinear motion given four-acceleration and four-velocity?

Jul 20, 2005 · Replies 6 · Jul 25, 2005

Replies: 6

Views: 2K

Simultaneity in IB Exam Q: Person A & B's Perspective

Jul 25, 2005 · Replies 3 · Jul 25, 2005

Replies: 3

Views: 3K

Noether's theorem and Time invariance?

Jul 24, 2005 · Replies 4 · Jul 25, 2005

Replies: 4

Views: 5K

Special Relativity and Mass Variation

Jul 20, 2005 · Replies 14 · Jul 24, 2005

Replies: 14

Views: 5K

Is Euclidean Quantum Gravity the Future of Nonperturbative Physics?

Jul 23, 2005 · Replies 2 · Jul 23, 2005

Replies: 2

Views: 4K

Prove Tidal Distortion Volume Conservation Mathematically

Jul 14, 2005 · Replies 2 · Jul 22, 2005

Replies: 2

Views: 4K

Time machines and rotating cylinders

Jul 13, 2005 · Replies 2 · Jul 21, 2005

Replies: 2

Views: 3K

What do we know about gravitation?

Jul 8, 2005 · Replies 14 · Jul 20, 2005

Replies: 14

Views: 3K

Why is gravity described as bending space instead of just an attractive force?

Jul 19, 2005 · Replies 9 · Jul 20, 2005

Replies: 9

Views: 8K

An old new kind of observer dependency: is v > c possible if nobody was looking?

Jul 19, 2005 · Replies 3 · Jul 20, 2005

Replies: 3

Views: 2K

Accomodating relativity to dark matter

Jul 9, 2005 · Replies 3 · Jul 19, 2005

Replies: 3

Views: 2K

Question about Wave equation for light in nonflat spaces

Jul 18, 2005 · Replies 5 · Jul 19, 2005

Replies: 5

Views: 3K

Why Must the Universe Expand or Contract According to General Relativity?

Jul 18, 2005 · Replies 2 · Jul 18, 2005

Replies: 2

Views: 2K

General Relativity and EM - Heim Theory

Jul 11, 2005 · Replies 1 · Jul 18, 2005

Replies: 1

Views: 5K

Einstein's:Mass increase resulting from Acceleration increase

Jun 29, 2005 · Replies 30 · Jul 18, 2005

2

Replies: 30

Views: 25K

Is Rotation in x and y Invariant at the Origin in a Rotating Coordinate System?

Jul 14, 2005 · Replies 6 · Jul 17, 2005

Replies: 6

Views: 3K

Understanding the Dot Product in Fermi Normal Coordinates

Jul 15, 2005 · Replies 4 · Jul 16, 2005

Replies: 4

Views: 5K

Gravity doughnut may solve time travel problem

Jul 15, 2005 · Replies 3 · Jul 16, 2005

Replies: 3

Views: 6K

Fermi-Walker transport non-rotating particle

Jul 4, 2005 · Replies 7 · Jul 14, 2005

Replies: 7

Views: 8K

Gravitational redshift +blackbody spectrum

Jul 7, 2005 · Replies 2 · Jul 14, 2005

Replies: 2

Views: 5K

Can spacetime as a rubber sheet be taken literally or merely as pedagogic?

Jul 6, 2005 · Replies 25 · Jul 12, 2005

Replies: 25

Views: 7K

How Does General Relativity Explain the Motion of Earth and Light?

Jul 5, 2005 · Replies 2 · Jul 12, 2005

Replies: 2

Views: 2K

General Relativity in the Undergraduate Physics Curriculum

Jun 14, 2005 · Replies 30 · Jul 12, 2005

2

Replies: 30

Views: 6K

Relativity - facing backwards on a train

Jul 10, 2005 · Replies 9 · Jul 12, 2005

Replies: 9

Views: 4K

Why does light accelerates after being slowed down

Jul 7, 2005 · Replies 12 · Jul 12, 2005

Replies: 12

Views: 5K

Why Do Photons Travel at the Speed of Light?

Jul 12, 2005 · Replies 4 · Jul 12, 2005

Replies: 4

Views: 3K

C constant to the observer as well?

Jul 4, 2005 · Replies 2 · Jul 11, 2005

Replies: 2

Views: 2K

General Relativity Postulates and History of Publication

Jul 10, 2005 · Replies 5 · Jul 11, 2005

Replies: 5

Views: 4K

The effect of wormholes on photons

Jul 2, 2005 · Replies 2 · Jul 9, 2005

Replies: 2

Views: 2K

Proofing a few paragraphs on relativity

Jul 9, 2005 · Replies 6 · Jul 9, 2005

Replies: 6

Views: 2K

Light in a Black Hole: Does It Escape or Lose Energy?

Jul 8, 2005 · Replies 9 · Jul 9, 2005

Replies: 9

Views: 3K

Meaning of frames in relativity

Jul 1, 2005 · Replies 2 · Jul 8, 2005

Replies: 2

Views: 2K

Energy of motion at high speed

Jul 5, 2005 · Replies 4 · Jul 8, 2005

Replies: 4

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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