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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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Amazing new experiment proposed

Mar 26, 2004 · Replies 6 · Mar 27, 2004

Replies: 6

Views: 3K

Check Spacetime Diagram for Scenario w/v=3/4c & \gamma=1.5

Mar 19, 2004 · Replies 8 · Mar 26, 2004

Replies: 8

Views: 4K

Relative Time Notation: Observer's POV & Objectivity

Mar 21, 2004 · Replies 6 · Mar 26, 2004

Replies: 6

Views: 3K

Understanding Einstein's Theory: The Role of Spacetime in Motion

Mar 22, 2004 · Replies 7 · Mar 25, 2004

Replies: 7

Views: 3K

Is There a Correlation Between Cognitive and Artistic Talent in Great Minds?

Mar 19, 2004 · Replies 30 · Mar 25, 2004

2

Replies: 30

Views: 33K

Which bomb explodes first, and why?

Mar 19, 2004 · Replies 12 · Mar 25, 2004

Replies: 12

Views: 3K

How do physicists use differential equations to describe the world?

Mar 20, 2004 · Replies 4 · Mar 24, 2004

Replies: 4

Views: 4K

Why is c even in the equation?

Mar 21, 2004 · Replies 4 · Mar 24, 2004

Replies: 4

Views: 14K

Centrifugal Force: Facts & Equations

Mar 20, 2004 · Replies 4 · Mar 24, 2004

Replies: 4

Views: 5K

Einstein & Gravity: Explained by HallsofIvy

Mar 16, 2004 · Replies 2 · Mar 23, 2004

Replies: 2

Views: 3K

Relative antiparallel photons generate Q. M.?

Mar 21, 2004 · Replies 7 · Mar 23, 2004

Replies: 7

Views: 3K

What Happens to a Donut Spinning at Near-Light Speeds?

Mar 17, 2004 · Replies 8 · Mar 23, 2004

Replies: 8

Views: 3K

Geodetic and Frame-Dragging Effects on Gyroscope Axis of Rotation

Mar 15, 2004 · Replies 2 · Mar 23, 2004

Replies: 2

Views: 3K

Who give me some references to Kaluza-Klain's theoy in 5D?

Mar 16, 2004 · Replies 2 · Mar 23, 2004

Replies: 2

Views: 2K

What exactly are Lorentz transformations?

Mar 20, 2004 · Replies 8 · Mar 20, 2004

Replies: 8

Views: 4K

Definition of relativity's interval

Mar 18, 2004 · Replies 10 · Mar 20, 2004

Replies: 10

Views: 6K

Non-symmetric gravitational theory (NGT)

Mar 17, 2004 · Replies 5 · Mar 18, 2004

Replies: 5

Views: 5K

Laws in freely falling elevator

Mar 15, 2004 · Replies 6 · Mar 16, 2004

Replies: 6

Views: 5K

Where should I start to learn about relativity?

Mar 9, 2004 · Replies 13 · Mar 16, 2004

Replies: 13

Views: 5K

Einstein's Space-Time Continuum: Is Time a 4th Dimension?

Mar 15, 2004 · Replies 7 · Mar 16, 2004

Replies: 7

Views: 8K

UNIFIED PHYSICS BEYOND GENERAL RELATIVITY by Peter Rodgers

Mar 9, 2004 · Replies 5 · Mar 13, 2004

Replies: 5

Views: 6K

Lenght contraction experiments.

Mar 9, 2004 · Replies 16 · Mar 11, 2004

Replies: 16

Views: 5K

About rotating reference system

Feb 28, 2004 · Replies 16 · Mar 9, 2004

Replies: 16

Views: 4K

If there is no Ether how can we talk about light being a wave?

Mar 5, 2004 · Replies 132 · Mar 9, 2004

5

Replies: 132

Views: 16K

Speed of light-can this be correct?

Mar 7, 2004 · Replies 5 · Mar 8, 2004

Replies: 5

Views: 3K

How do special and general relativity become theories?

Mar 6, 2004 · Replies 4 · Mar 8, 2004

Replies: 4

Views: 3K

I can't get it through my head

Mar 7, 2004 · Replies 5 · Mar 7, 2004

Replies: 5

Views: 3K

Can you speak English for a lowly S/W Dev?

Feb 7, 2004 · Replies 37 · Mar 7, 2004

2

Replies: 37

Views: 6K

Is the speed of light truly a universal constant?

Mar 5, 2004 · Replies 6 · Mar 6, 2004

Replies: 6

Views: 3K

What is the Universal Gravitational Constant?

Feb 19, 2004 · Replies 10 · Mar 5, 2004

Replies: 10

Views: 10K

The Mystery of Light: FTL Travel

Jan 31, 2004 · Replies 49 · Mar 4, 2004

2

Replies: 49

Views: 7K

Time & Speed: Questions from a Non-Physics Student

Feb 13, 2004 · Replies 15 · Mar 2, 2004

Replies: 15

Views: 4K

Explore Ideas: Learning & Discussing Space Probes & Gravity

Mar 2, 2004 · Replies 2 · Mar 2, 2004

Replies: 2

Views: 3K

Can we measure absolute velocity?

Feb 19, 2004 · Replies 10 · Mar 2, 2004

Replies: 10

Views: 5K

Does the speed of light affect the aberration of starlight?

Feb 19, 2004 · Replies 51 · Mar 2, 2004

2

Replies: 51

Views: 10K

Is the Robertson-Walker Metric Key to Understanding the Expanding Universe?

Feb 26, 2004 · Replies 27 · Mar 1, 2004

Replies: 27

Views: 6K

What is the connection between time dilation and gravity?

Mar 1, 2004 · Replies 4 · Mar 1, 2004

Replies: 4

Views: 5K

Time Dilation Formula: Calculating Rel Speed Diff b/w Objects

Feb 13, 2004 · Replies 47 · Mar 1, 2004

2

Replies: 47

Views: 10K

What is space-time made out of ?

Feb 9, 2004 · Replies 34 · Mar 1, 2004

2

Replies: 34

Views: 24K

Time dilation relationship between gravity and velocity.

Feb 29, 2004 · Replies 15 · Mar 1, 2004

Replies: 15

Views: 11K

One way Speed of Light measured by a Single Clock

Feb 26, 2004 · Replies 8 · Feb 29, 2004

Replies: 8

Views: 6K

Schwarzschild Metric Question again

Feb 25, 2004 · Replies 2 · Feb 26, 2004

Replies: 2

Views: 3K

Is the Cosmological Constant Problem Indicative of Unknown Aspects of Gravity?

Feb 26, 2004 · Replies 4 · Feb 26, 2004

Replies: 4

Views: 4K

Simple Problem: Pulling a Bar 1 Light-Day Long in Empty Space

Feb 25, 2004 · Replies 4 · Feb 26, 2004

Replies: 4

Views: 2K

The speed of light in a Schwarzschild space-time

Feb 23, 2004 · Replies 6 · Feb 25, 2004

Replies: 6

Views: 4K

Experimental proof of Mach's principle?

Feb 19, 2004 · Replies 6 · Feb 23, 2004

Replies: 6

Views: 3K

Longitudinal and Transverse Mass

Feb 13, 2004 · Replies 2 · Feb 22, 2004

Replies: 2

Views: 6K

Why Does Einstein's Theory Predict an Odd Number of Gravitational Lens Images?

Feb 12, 2004 · Replies 2 · Feb 21, 2004

Replies: 2

Views: 3K

What is the mechanism for expansion

Feb 10, 2004 · Replies 2 · Feb 20, 2004

Replies: 2

Views: 3K

Discover the Controversial Gravitational Blueshift Phenomenon

Feb 11, 2004 · Replies 17 · Feb 18, 2004

Replies: 17

Views: 7K

What are the latest developments in quantum gravity?

Feb 17, 2004 · Replies 2 · Feb 18, 2004

Replies: 2

Views: 3K

Is Lorentz symmetry violation possible for electrons and photons?

Feb 17, 2004 · Replies 4 · Feb 18, 2004

Replies: 4

Views: 3K

Is Self Creation Cosmology the Key to Solving Cosmological Mysteries?

Feb 17, 2004 · Replies 2 · Feb 18, 2004

Replies: 2

Views: 3K

Solving Time Dilation Question from Simply Einstein

Feb 16, 2004 · Replies 7 · Feb 17, 2004

Replies: 7

Views: 3K

Unveiling Einstein's Genius: The Secrets Behind His Groundbreaking Formulas

Feb 13, 2004 · Replies 5 · Feb 17, 2004

Replies: 5

Views: 6K

New Lineweaver paper/Superluminal expansion speeds

Nov 7, 2003 · Replies 10 · Feb 17, 2004

Replies: 10

Views: 4K

What is Stephen Hawking's No Boundary Proposal and its significance?

Feb 14, 2004 · Replies 2 · Feb 17, 2004

Replies: 2

Views: 8K

Question about Special Relativity

Feb 15, 2004 · Replies 4 · Feb 16, 2004

Replies: 4

Views: 3K

Special Relativity in a Periodic Universe

Feb 15, 2004 · Replies 2 · Feb 16, 2004

Replies: 2

Views: 4K

Timelike geodesics might not be maxima of the proper time

Feb 13, 2004 · Replies 7 · Feb 16, 2004

Replies: 7

Views: 4K

SR and the earth, sun, and galaxy.

Jan 1, 2004 · Replies 122 · Feb 14, 2004

5

Replies: 122

Views: 13K

What are the implications of time being relative?

Feb 13, 2004 · Replies 3 · Feb 13, 2004

Replies: 3

Views: 2K

GammaRayBursts as standard candles to judge dark energy

Jan 14, 2004 · Replies 18 · Feb 13, 2004

Replies: 18

Views: 3K

Does Relativistic Mass Affect Gravitational Force in SR? | SR & GR Comparison

Feb 10, 2004 · Replies 12 · Feb 13, 2004

Replies: 12

Views: 3K

Arguments of lawyer against relativity

Jul 30, 2003 · Replies 12 · Feb 13, 2004

Replies: 12

Views: 4K

What happens to the car in the Relativistic Car Paradox?

Jan 30, 2004 · Replies 29 · Feb 10, 2004

Replies: 29

Views: 6K

Gravity caused by curved space - am I right?

Feb 8, 2004 · Replies 18 · Feb 10, 2004

Replies: 18

Views: 6K

Bending Light: Gravity, Invisibility and Orbit

Feb 8, 2004 · Replies 2 · Feb 9, 2004

Replies: 2

Views: 6K

What is Einstein's Box in Physics?

Jan 16, 2004 · Replies 6 · Feb 8, 2004

Replies: 6

Views: 8K

Light Clock Thought Experiment: Parallel Moving Mirrors

Feb 5, 2004 · Replies 7 · Feb 8, 2004

Replies: 7

Views: 4K

Questions About General Theory of Relativity

Feb 4, 2004 · Replies 26 · Feb 7, 2004

Replies: 26

Views: 9K

Relativistic Mass as Gravitational Charge

Jan 26, 2004 · Replies 7 · Feb 7, 2004

Replies: 7

Views: 4K

Expanding people in an expanding universe?

Jan 17, 2004 · Replies 36 · Feb 6, 2004

2

Replies: 36

Views: 15K

What is the Mass Tensor in Relativity?

Jan 25, 2004 · Replies 23 · Feb 6, 2004

Replies: 23

Views: 9K

Magnetic distortion of spacetime

Feb 5, 2004 · Replies 2 · Feb 5, 2004

Replies: 2

Views: 4K

I'm sure this has been asked a million times but,

Jan 25, 2004 · Replies 27 · Feb 5, 2004

Replies: 27

Views: 5K

Einstein's Modified Newton's Equation of Motion

Jan 29, 2004 · Replies 17 · Feb 5, 2004

Replies: 17

Views: 5K

Multiple Universe: Could Black Holes Create New Universes?

Jan 31, 2004 · Replies 8 · Feb 4, 2004

Replies: 8

Views: 3K

What if the speed of light was slower?

Dec 28, 2003 · Replies 21 · Feb 3, 2004

Replies: 21

Views: 24K

Stars closer than thought. How the sun affects the light path

Jan 24, 2004 · Replies 4 · Jan 31, 2004

Replies: 4

Views: 4K

Energy, Mass and Expansion of Universe

Jan 24, 2004 · Replies 2 · Jan 31, 2004

Replies: 2

Views: 3K

Redshift Jumps: New Evidence of Quantization?

Jan 29, 2004 · Replies 4 · Jan 30, 2004

Replies: 4

Views: 4K

Are Tachyons Just a Science Fiction Dream?

Jan 27, 2004 · Replies 7 · Jan 29, 2004

Replies: 7

Views: 4K

I admit, I only had wrong impression

Jan 21, 2004 · Replies 2 · Jan 28, 2004

Replies: 2

Views: 3K

Is the Speed of Light Really Absolute?: An Amateur Astronomer's Musings

Jan 16, 2004 · Replies 23 · Jan 26, 2004

Replies: 23

Views: 12K

What Is Relativistic Kinematics?

Jan 18, 2004 · Replies 2 · Jan 26, 2004

Replies: 2

Views: 5K

Two Kinds of Time: Length Contraction and Time Dilation

Jan 22, 2004 · Replies 11 · Jan 25, 2004

Replies: 11

Views: 3K

Is Fine Structure Invariant Over Cosmological Time Scales?

Jan 18, 2004 · Replies 13 · Jan 22, 2004

Replies: 13

Views: 3K

Increasing expantional speed of the universe

Jan 20, 2004 · Replies 7 · Jan 22, 2004

Replies: 7

Views: 4K

E=MC2: quantum or relativistic effect?

Jan 19, 2004 · Replies 6 · Jan 20, 2004

Replies: 6

Views: 8K

Gauge Groups, Riemann Tensors & Conformal Invariance in GR & QG

Jan 12, 2004 · Replies 1 · Jan 19, 2004

Replies: 1

Views: 3K

[tex]E = -\nabla \Phi - \displaystyle{\frac{\partial A}{\partial t}}[/tex]

Jan 11, 2004 · Replies 6 · Jan 19, 2004

Replies: 6

Views: 7K

Is Linear Momentum Conserved in Relativistic Angular Acceleration?

Jan 10, 2004 · Replies 13 · Jan 19, 2004

Replies: 13

Views: 4K

How Do Black Holes Exert Gravitational Force If They Capture Gravitons?

Jan 17, 2004 · Replies 3 · Jan 18, 2004

Replies: 3

Views: 3K

Is Albert Einstein's Theory of General Relativity Still Valid?

Jan 9, 2004 · Replies 2 · Jan 16, 2004

Replies: 2

Views: 3K

Thought experiment for using Black Holes for cmmunication

Jan 14, 2004 · Replies 2 · Jan 15, 2004

Replies: 2

Views: 3K

How does the relativity of simultaneity work in the classic train example?

Jan 14, 2004 · Replies 2 · Jan 14, 2004

Replies: 2

Views: 2K

Physically Inequivalent Quantum Theories from the Wheeler-de-Witt Equation

Dec 30, 2003 · Replies 23 · Jan 14, 2004

Replies: 23

Views: 10K

E=MC2: does this prevent a Mass from achieving Light Speed?

Jan 11, 2004 · Replies 16 · Jan 13, 2004

Replies: 16

Views: 7K

Time changes in gravity field.

Dec 29, 2003 · Replies 18 · Jan 12, 2004

Replies: 18

Views: 8K

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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