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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 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: 4K

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: 7K

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: 6K

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: 10K

Graduate What is space-time made out of ?

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

2

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: 3K

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

2

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

5

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

Graduate GammaRayBursts as standard candles to judge dark energy

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

Replies: 18

Views: 3K

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

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

Replies: 12

Views: 3K

Graduate Arguments of lawyer against relativity

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

Replies: 12

Views: 4K

Graduate What happens to the car in the Relativistic Car Paradox?

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

Replies: 29

Views: 6K

Graduate Gravity caused by curved space - am I right?

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

Replies: 18

Views: 6K

Graduate Bending Light: Gravity, Invisibility and Orbit

Feb 8, 2004 · Replies 2 · Feb 9, 2004

Replies: 2

Views: 6K

Graduate What is Einstein's Box in Physics?

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

Replies: 6

Views: 8K

Graduate Light Clock Thought Experiment: Parallel Moving Mirrors

Feb 5, 2004 · Replies 7 · Feb 8, 2004

Replies: 7

Views: 4K

Graduate Questions About General Theory of Relativity

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

Replies: 26

Views: 9K

Graduate Relativistic Mass as Gravitational Charge

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

Replies: 7

Views: 4K

Undergrad Expanding people in an expanding universe?

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

2

Replies: 36

Views: 15K

Graduate What is the Mass Tensor in Relativity?

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

Replies: 23

Views: 9K

Graduate Magnetic distortion of spacetime

Feb 5, 2004 · Replies 2 · Feb 5, 2004

Replies: 2

Views: 4K

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

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

Replies: 27

Views: 5K

Undergrad Einstein's Modified Newton's Equation of Motion

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

Replies: 17

Views: 5K

Graduate Is FTL Travel Possible with a Mini Cooper in an Alternate Space Network?

Jan 25, 2004 · Replies 33 · Feb 5, 2004

2

Replies: 33

Views: 5K

Graduate Multiple Universe: Could Black Holes Create New Universes?

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

Replies: 8

Views: 3K

Undergrad What if the speed of light was slower?

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

Replies: 21

Views: 25K

Graduate Is Gravity a Substance or a Wave?

Jan 30, 2004 · Replies 5 · Feb 1, 2004

Replies: 5

Views: 2K

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

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

Replies: 4

Views: 4K

Graduate Energy, Mass and Expansion of Universe

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

Replies: 2

Views: 3K

Graduate Redshift Jumps: New Evidence of Quantization?

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

Replies: 4

Views: 4K

Graduate Does Simultaneity Truly Exist in the Universe?

Jan 21, 2004 · Replies 32 · Jan 29, 2004

2

Replies: 32

Views: 8K

Graduate Are Tachyons Just a Science Fiction Dream?

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

Replies: 7

Views: 4K

Undergrad I admit, I only had wrong impression

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

Replies: 2

Views: 3K

Undergrad Gravity and the Speed of Gravitational Influence

Jan 25, 2004 · Replies 12 · Jan 26, 2004

Replies: 12

Views: 3K

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

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

Replies: 23

Views: 12K

Undergrad What Is Relativistic Kinematics?

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

Replies: 2

Views: 5K

Graduate Two Kinds of Time: Length Contraction and Time Dilation

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

Replies: 11

Views: 3K

Graduate What Are the Two Types of Time in Relation to Gravity?

Jan 23, 2004 · Replies 3 · Jan 24, 2004

Replies: 3

Views: 3K

Graduate What Insights Can We Gain from Gravitational Redshift Theories?

Jan 21, 2004 · Replies 3 · Jan 23, 2004

Replies: 3

Views: 3K

Graduate Is Fine Structure Invariant Over Cosmological Time Scales?

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

Replies: 13

Views: 3K

Graduate Increasing expantional speed of the universe

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

Replies: 7

Views: 4K

Graduate E=MC2: quantum or relativistic effect?

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

Replies: 6

Views: 8K

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

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

Replies: 1

Views: 3K

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

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

Replies: 6

Views: 7K

Graduate Is Linear Momentum Conserved in Relativistic Angular Acceleration?

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

Replies: 13

Views: 4K

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

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

Replies: 3

Views: 3K

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

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

Replies: 2

Views: 3K

Graduate The infinite improbability drive, revisited again.

Jan 13, 2004 · Replies 8 · Jan 15, 2004

Replies: 8

Views: 4K

Graduate Thought experiment for using Black Holes for cmmunication

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

Replies: 2

Views: 3K

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

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

Replies: 2

Views: 2K

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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