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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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Graduate Can Twins Age Differently in Space Without Acceleration?

Apr 10, 2004 · Replies 10 · Apr 10, 2004

Replies: 10

Views: 3K

Graduate Is Space Truly Three Dimensional?

Apr 6, 2004 · Replies 9 · Apr 9, 2004

Replies: 9

Views: 7K

High School Why does the Earth move around the sun?

Apr 8, 2004 · Replies 8 · Apr 9, 2004

Replies: 8

Views: 3K

High School What is FOR ? doppler shift?

Apr 1, 2004 · Replies 2 · Apr 8, 2004

Replies: 2

Views: 2K

Undergrad Traveling at Light Speed: Our Earth's Movement Through Time

Apr 5, 2004 · Replies 5 · Apr 7, 2004

Replies: 5

Views: 4K

Graduate How Does Gravity Affect Space and Time Near Black Holes?

Apr 1, 2004 · Replies 8 · Apr 7, 2004

Replies: 8

Views: 3K

Graduate The Fundamental Postulate Of Special Relativity Is Self-Contradictory

Mar 31, 2004 · Replies 156 · Apr 7, 2004

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Replies: 156

Views: 19K

Undergrad Satellite to test Einstein's predictions

Apr 3, 2004 · Replies 2 · Apr 5, 2004

Replies: 2

Views: 2K

Graduate Mass Change in Objects: Investigating the Effects

Mar 27, 2004 · Replies 10 · Apr 5, 2004

Replies: 10

Views: 4K

Graduate Quick question on where to apply time dilation.

Apr 3, 2004 · Replies 10 · Apr 4, 2004

Replies: 10

Views: 3K

Satellite to test Einstein predictions

Apr 3, 2004 · Replies 4 · Apr 4, 2004

Replies: 4

Views: 2K

Graduate General Relativity and relationism

Apr 2, 2004 · Replies 3 · Apr 2, 2004

Replies: 3

Views: 3K

Undergrad Light in the wake of huge objects

Mar 24, 2004 · Replies 2 · Apr 2, 2004

Replies: 2

Views: 2K

High School Laymen’s view of what general relativity is?

Apr 1, 2004 · Replies 5 · Apr 2, 2004

Replies: 5

Views: 2K

What Unique Perspectives on Mathematics Does the UCR Math Website Offer?

Mar 26, 2004 · Replies 2 · Apr 2, 2004

Replies: 2

Views: 9K

Graduate Can Gravity Enable Instantaneous Communication Faster Than Light?

Mar 14, 2004 · Replies 9 · Apr 1, 2004

Replies: 9

Views: 4K

Graduate How does the uncertainty principle affect the behavior of photons?

Mar 29, 2004 · Replies 8 · Mar 31, 2004

Replies: 8

Views: 3K

Graduate Is The Theory Of Special Relativity Wrong?

Mar 30, 2004 · Replies 18 · Mar 31, 2004

Replies: 18

Views: 5K

Graduate Can we really travel back in time using a wormhole?

Mar 25, 2004 · Replies 4 · Mar 30, 2004

Replies: 4

Views: 4K

Graduate Going Faster Than Light: Can It Be Achieved?

Mar 29, 2004 · Replies 8 · Mar 30, 2004

Replies: 8

Views: 2K

Graduate Stephen Hawking Grand Unified Theory

Mar 18, 2004 · Replies 2 · Mar 29, 2004

Replies: 2

Views: 4K

Graduate What is the significance of a 4-vector's magnitude being c?

Mar 27, 2004 · Replies 10 · Mar 29, 2004

Replies: 10

Views: 13K

Graduate SuperDuper Problem In The Time Dilation Formula Revealed

Mar 28, 2004 · Replies 2 · Mar 29, 2004

Replies: 2

Views: 5K

Graduate Amazing new experiment proposed

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

Replies: 6

Views: 3K

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

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

Replies: 8

Views: 4K

Graduate Relative Time Notation: Observer's POV & Objectivity

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

Replies: 6

Views: 4K

Graduate 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

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Replies: 30

Views: 33K

Graduate Which bomb explodes first, and why?

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

Replies: 12

Views: 3K

High School How do physicists use differential equations to describe the world?

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

Replies: 4

Views: 5K

Undergrad Why is c even in the equation?

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

Replies: 4

Views: 15K

Graduate How are gravitational radiation and electromagnetic radiation related?

Mar 21, 2004 · Replies 1 · Mar 24, 2004

Replies: 1

Views: 4K

Undergrad Centrifugal Force: Facts & Equations

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

Replies: 4

Views: 6K

Graduate Einstein & Gravity: Explained by HallsofIvy

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

Replies: 2

Views: 3K

Graduate Relative antiparallel photons generate Q. M.?

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

Replies: 7

Views: 3K

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

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

Replies: 8

Views: 3K

Graduate Geodetic and Frame-Dragging Effects on Gyroscope Axis of Rotation

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

Replies: 2

Views: 3K

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

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

Replies: 2

Views: 2K

Graduate Simulteneity and other myths, maybe?

Mar 17, 2004 · Replies 3 · Mar 21, 2004

Replies: 3

Views: 3K

Graduate What is the relationship between energy and the curvature of spacetime?

Mar 19, 2004 · Replies 1 · Mar 21, 2004

Replies: 1

Views: 3K

Undergrad What exactly are Lorentz transformations?

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

Replies: 8

Views: 4K

Graduate Definition of relativity's interval

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

Replies: 10

Views: 6K

Graduate Non-symmetric gravitational theory (NGT)

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

Replies: 5

Views: 6K

Graduate Exact solutions of Einstein's field equations

Mar 14, 2004 · Replies 6 · Mar 17, 2004

Replies: 6

Views: 4K

Undergrad Can Gravity and Acceleration Ever Equal the Speed of Light?

Mar 15, 2004 · Replies 4 · Mar 17, 2004

Replies: 4

Views: 2K

Graduate Laws in freely falling elevator

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

Replies: 6

Views: 6K

Graduate Where should I start to learn about relativity?

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

Replies: 13

Views: 5K

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

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

Replies: 7

Views: 8K

Undergrad Q: Questions About Stephen Hawking, Einstein & Gravity

Mar 15, 2004 · Replies 2 · Mar 16, 2004

Replies: 2

Views: 10K

Time Travel - Possibility and Speculation

Feb 17, 2004 · Replies 77 · Mar 16, 2004

3

Replies: 77

Views: 9K

Graduate Are there different concepts of time travel and how do they work?

Nov 8, 2003 · Replies 3 · Mar 16, 2004

Replies: 3

Views: 3K

Graduate UNIFIED PHYSICS BEYOND GENERAL RELATIVITY by Peter Rodgers

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

Replies: 5

Views: 6K

Graduate Major Breakthrough in Theory of Relativity

Mar 12, 2004 · Replies 3 · Mar 12, 2004

Replies: 3

Views: 3K

Undergrad Lenght contraction experiments.

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

Replies: 16

Views: 5K

Graduate About rotating reference system

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

Replies: 16

Views: 5K

Undergrad 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

Undergrad Speed of light-can this be correct?

Mar 7, 2004 · Replies 5 · Mar 8, 2004

Replies: 5

Views: 3K

Graduate How do special and general relativity become theories?

Mar 6, 2004 · Replies 4 · Mar 8, 2004

Replies: 4

Views: 3K

Graduate I can't get it through my head

Mar 7, 2004 · Replies 5 · Mar 7, 2004

Replies: 5

Views: 3K

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

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

2

Replies: 37

Views: 6K

Graduate Unanswered Questions Surrounding Time Travel Possibilities

Mar 6, 2004 · Replies 3 · Mar 6, 2004

Replies: 3

Views: 4K

Graduate Is the speed of light truly a universal constant?

Mar 5, 2004 · Replies 6 · Mar 6, 2004

Replies: 6

Views: 3K

High School What is the Universal Gravitational Constant?

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

Replies: 10

Views: 10K

Undergrad The Mystery of Light: FTL Travel

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

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Replies: 49

Views: 8K

Undergrad Time & Speed: Questions from a Non-Physics Student

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

Replies: 15

Views: 4K

Undergrad Explore Ideas: Learning & Discussing Space Probes & Gravity

Mar 2, 2004 · Replies 2 · Mar 2, 2004

Replies: 2

Views: 3K

Graduate Can we measure absolute velocity?

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

Replies: 10

Views: 5K

Undergrad Does the speed of light affect the aberration of starlight?

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

2

Replies: 51

Views: 11K

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

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

Replies: 27

Views: 7K

Graduate What is the connection between time dilation and gravity?

Mar 1, 2004 · Replies 4 · Mar 1, 2004

Replies: 4

Views: 5K

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

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

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Replies: 47

Views: 11K

Graduate What is space-time made out of ?

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

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Replies: 34

Views: 24K

Graduate Time dilation relationship between gravity and velocity.

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

Replies: 15

Views: 11K

Graduate One way Speed of Light measured by a Single Clock

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

Replies: 8

Views: 6K

Graduate Schwarzschild Metric Question again

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

Replies: 2

Views: 3K

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

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

Replies: 4

Views: 4K

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

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

Replies: 4

Views: 2K

Graduate The speed of light in a Schwarzschild space-time

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

Replies: 6

Views: 4K

Graduate Thought experiment(escape from black holes)

Feb 20, 2004 · Replies 11 · Feb 24, 2004

Replies: 11

Views: 4K

Graduate Experimental proof of Mach's principle?

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

Replies: 6

Views: 3K

Graduate Longitudinal and Transverse Mass

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

Replies: 2

Views: 6K

Graduate 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

Graduate What is the mechanism for expansion

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

Replies: 2

Views: 3K

Graduate Discover the Controversial Gravitational Blueshift Phenomenon

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

Replies: 17

Views: 7K

Graduate What are the latest developments in quantum gravity?

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

Replies: 2

Views: 3K

Graduate Is Lorentz symmetry violation possible for electrons and photons?

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

Replies: 4

Views: 3K

Graduate Is Self Creation Cosmology the Key to Solving Cosmological Mysteries?

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

Replies: 2

Views: 3K

Undergrad Solving Time Dilation Question from Simply Einstein

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

Replies: 7

Views: 3K

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

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

Replies: 5

Views: 6K

Graduate New Lineweaver paper/Superluminal expansion speeds

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

Replies: 10

Views: 4K

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

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

Replies: 2

Views: 8K

Graduate What is the force propelling us through time?

Dec 31, 2003 · Replies 55 · Feb 16, 2004

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Replies: 55

Views: 9K

Undergrad Question about Special Relativity

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

Replies: 4

Views: 3K

Graduate Special Relativity in a Periodic Universe

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

Replies: 2

Views: 4K

Graduate Timelike geodesics might not be maxima of the proper time

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

Replies: 7

Views: 4K

Graduate Is Time Travel Truly Possible or Just a Fantasy?

Dec 10, 2003 · Replies 4 · Feb 15, 2004

Replies: 4

Views: 3K

Undergrad Is Time a Proven Fact or Still Just a Theory?

Feb 10, 2004 · Replies 22 · Feb 15, 2004

Replies: 22

Views: 4K

Graduate SR and the earth, sun, and galaxy.

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

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Replies: 122

Views: 14K

Graduate Equation that predicts the increasing values of mass

Jan 9, 2004 · Replies 37 · Feb 14, 2004

2

Replies: 37

Views: 5K

Undergrad What are the implications of time being relative?

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

Replies: 3

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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