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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 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: 6K

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

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

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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

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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: 4K

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: 4K

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

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

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

Replies: 23

Views: 10K

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

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

Replies: 16

Views: 7K

Graduate Time changes in gravity field.

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

Replies: 18

Views: 8K

Graduate Modern Special Relativity and Mass

Dec 16, 2003 · Replies 30 · Jan 11, 2004

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Replies: 30

Views: 7K

Graduate Does the Earth's movement towards the sun affect the speed of light?

Jan 11, 2004 · Replies 4 · Jan 11, 2004

Replies: 4

Views: 3K

Graduate Special Relativity Contains Massive Error

Dec 17, 2003 · Replies 60 · Jan 9, 2004

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Replies: 60

Views: 10K

Graduate 1905 Special Relativity theory Time dilation

Dec 9, 2003 · Replies 45 · Jan 9, 2004

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Replies: 45

Views: 12K

Graduate Question regarding explanation of impossiblity of faster then light travel speed

Dec 21, 2003 · Replies 12 · Jan 8, 2004

Replies: 12

Views: 6K

Graduate What if speed of light was Faster? Would TIME travel be prohibited?

Jan 1, 2004 · Replies 2 · Jan 8, 2004

Replies: 2

Views: 6K

Undergrad How Fast Do Mechanical Forces Travel Through Different Mediums?

Jan 1, 2004 · Replies 3 · Jan 7, 2004

Replies: 3

Views: 3K

Undergrad QM or Relativity first for self learners?

Jan 6, 2004 · Replies 3 · Jan 7, 2004

Replies: 3

Views: 3K

Graduate Dimensions and Degrees of Freedom

Jan 2, 2004 · Replies 5 · Jan 2, 2004

Replies: 5

Views: 5K

Graduate How does SR work at speeds greater than c?

Jan 1, 2004 · Replies 5 · Jan 2, 2004

Replies: 5

Views: 3K

Graduate Can Light Pulse Peaks Really Travel Faster Than C?

Dec 29, 2003 · Replies 6 · Jan 2, 2004

Replies: 6

Views: 4K

Undergrad What Happens If a Time Traveler Dies in the Past?

Dec 27, 2003 · Replies 1 · Dec 31, 2003

Replies: 1

Views: 4K

Graduate To see there is easier than to be there

Dec 1, 2003 · Replies 7 · Dec 31, 2003

Replies: 7

Views: 3K

Undergrad Can Timelines Intersect or Travel in Different Directions?

Dec 30, 2003 · Replies 2 · Dec 31, 2003

Replies: 2

Views: 3K

Graduate About null and timelike geodesics

May 17, 2003 · Replies 5 · Dec 29, 2003

Replies: 5

Views: 7K

Graduate Why the notion of covariance in GR is so important

Dec 27, 2003 · Replies 13 · Dec 29, 2003

Replies: 13

Views: 6K

Graduate Notation of General Relativity

Dec 22, 2003 · Replies 5 · Dec 28, 2003

Replies: 5

Views: 4K

Graduate Question about photons and relative velocity.

Dec 25, 2003 · Replies 2 · Dec 27, 2003

Replies: 2

Views: 3K

Graduate Time travel into the past is logically possible

Sep 9, 2003 · Replies 80 · Dec 26, 2003

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Replies: 80

Views: 11K

Graduate How Can Time Travel Affect the Past and Future?

Dec 1, 2003 · Replies 24 · Dec 25, 2003

Replies: 24

Views: 5K

Graduate Is the Concept of Zero Length Contraction Possible in Special Relativity?

Dec 24, 2003 · Replies 4 · Dec 25, 2003

Replies: 4

Views: 3K

Graduate Special Relativity to blow your mind

Dec 16, 2003 · Replies 2 · Dec 23, 2003

Replies: 2

Views: 2K

Graduate Three papers by Kowalski-Glikman

Dec 19, 2003 · Replies 10 · Dec 23, 2003

Replies: 10

Views: 4K

Graduate Time Travel - what alot boll'clocks'

Dec 19, 2003 · Replies 19 · Dec 22, 2003

Replies: 19

Views: 4K

Graduate Exploring Paul Davies 'About Time': Questions, Thoughts, Comments

Sep 1, 2003 · Replies 4 · Dec 22, 2003

Replies: 4

Views: 4K

Graduate Why is the Speed of Light Constant in All Inertial Frames?

Dec 2, 2003 · Replies 75 · Dec 22, 2003

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Replies: 75

Views: 11K

Graduate Are Recent Studies on Lorentz Violation Indicative of Quantum Gravity Effects?

Dec 19, 2003 · Replies 4 · Dec 20, 2003

Replies: 4

Views: 3K

Graduate Speed of Light Remains Constant

Dec 18, 2003 · Replies 8 · Dec 20, 2003

Replies: 8

Views: 5K

Graduate Does heating an object increase its weight?

Dec 14, 2003 · Replies 9 · Dec 19, 2003

Replies: 9

Views: 4K

Graduate Cosmic Physics: the High Energy Frontier (by Floyd Stecker)

Dec 19, 2003 · Replies 2 · Dec 19, 2003

Replies: 2

Views: 4K

Graduate Simple proof that SR is self contradictory

Dec 19, 2003 · Replies 8 · Dec 19, 2003

Replies: 8

Views: 3K

Graduate Proving Relativistic Invariance of Electric and Magnetic Field Dot Product

Dec 5, 2003 · Replies 2 · Dec 19, 2003

Replies: 2

Views: 6K

New Discoveries from Hubble Telescope Shake Theories of Time, Gravity, and Space

Nov 21, 2003 · Replies 19 · Dec 18, 2003

Replies: 19

Views: 5K

Graduate On The Non Relativity Of Simultaneity

Dec 12, 2003 · Replies 37 · Dec 18, 2003

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Replies: 37

Views: 8K

Graduate Maxwell's eqn in invariant form

Dec 17, 2003 · Replies 3 · Dec 18, 2003

Replies: 3

Views: 3K

Graduate Frame dragging by a black hole

Dec 16, 2003 · Replies 5 · Dec 17, 2003

Replies: 5

Views: 4K

Einstein's E=mc2 'was Italian's idea'?

Dec 17, 2003 · Replies 7 · Dec 17, 2003

Replies: 7

Views: 6K

Undergrad Particles having nonzero rest mass can approach the speed of light

Dec 16, 2003 · Replies 4 · Dec 16, 2003

Replies: 4

Views: 3K

Undergrad How do we measure velocity at the first place?

Dec 9, 2003 · Replies 2 · Dec 16, 2003

Replies: 2

Views: 2K

Graduate Relativity Paradox: Explaining A Ship Moving at 198% Light Speed

Nov 27, 2003 · Replies 23 · Dec 15, 2003

Replies: 23

Views: 6K

Graduate Understanding the Moon's Position: Relativity and Uncertainty

Nov 28, 2003 · Replies 7 · Dec 15, 2003

Replies: 7

Views: 3K

Graduate Strings, gravity and dark matter

Dec 6, 2003 · Replies 1 · Dec 13, 2003

Replies: 1

Views: 3K

Graduate Can the Dot Product of Electric and Magnetic Fields be Proven as Invariant?

Dec 5, 2003 · Replies 108 · Dec 13, 2003

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Replies: 108

Views: 24K

Graduate Understanding Relativity and Its Effects on Lightspeed

Nov 11, 2003 · Replies 32 · Dec 12, 2003

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Replies: 32

Views: 8K

Undergrad What is the significance of aether in science, philosophy, and astronomy?

Dec 5, 2003 · Replies 2 · Dec 12, 2003

Replies: 2

Views: 3K

Graduate Does Time Dilation Make Earth Clocks Look Faster from a Spacecraft?

Dec 11, 2003 · Replies 3 · Dec 12, 2003

Replies: 3

Views: 3K

Graduate Velocity Question - How Fast Does It Move?

Dec 11, 2003 · Replies 4 · Dec 11, 2003

Replies: 4

Views: 3K

Graduate Speed of gravity. Whats the problem.

Nov 6, 2003 · Replies 20 · Dec 11, 2003

Replies: 20

Views: 9K

Graduate Spacetime distortion - question

Dec 6, 2003 · Replies 6 · Dec 10, 2003

Replies: 6

Views: 3K

Graduate Relativistic Invariance Part Two

Dec 9, 2003 · Replies 1 · Dec 10, 2003

Replies: 1

Views: 3K

Graduate What is the rate of time dilation in relation to velocity?

Dec 8, 2003 · Replies 1 · Dec 8, 2003

Replies: 1

Views: 4K

Undergrad Is a photonic-boom possible?

Dec 8, 2003 · Replies 4 · Dec 8, 2003

Replies: 4

Views: 17K

Undergrad Special Relativity: Light's Relative Speed Explained

Dec 6, 2003 · Replies 8 · Dec 8, 2003

Replies: 8

Views: 3K

Graduate Space dynamics in GR anaylysis of black holes

Dec 6, 2003 · Replies 4 · Dec 8, 2003

Replies: 4

Views: 3K

Graduate Understanding Time Dilation in Accelerating Frames and the Equivalence Principle

Nov 20, 2003 · Replies 11 · Dec 8, 2003

Replies: 11

Views: 5K

Undergrad Accelerating in Space vs Standing in Gravity Well

Nov 29, 2003 · Replies 23 · Dec 6, 2003

Replies: 23

Views: 6K

Graduate Would a Train Going at Near Light Speed Cause Length Contraction on a Planet?

Nov 16, 2003 · Replies 13 · Dec 6, 2003

Replies: 13

Views: 9K

Graduate Looking for the granularity of spacetime

Nov 28, 2003 · Replies 12 · Dec 6, 2003

Replies: 12

Views: 4K

Can We Time Travel to Earth's Past and Future?

Nov 18, 2003 · Replies 4 · Dec 6, 2003

Replies: 4

Views: 3K

Graduate Relativity of Mass or 'Weight' ?

Nov 28, 2003 · Replies 6 · Dec 5, 2003

Replies: 6

Views: 5K

Graduate Radioactive decay in relativistic frames

Dec 4, 2003 · Replies 4 · Dec 5, 2003

Replies: 4

Views: 5K

Graduate What is the role of quantum gravity in understanding our universe?

Dec 1, 2003 · Replies 7 · Dec 4, 2003

Replies: 7

Views: 3K

Graduate The GF (The gravitational force)

Nov 28, 2003 · Replies 1 · Dec 4, 2003

Replies: 1

Views: 2K

Graduate One unanswered question about Aether

Nov 27, 2003 · Replies 25 · Dec 3, 2003

Replies: 25

Views: 7K

Graduate GR's Tests validity over other theories

Nov 27, 2003 · Replies 11 · Dec 3, 2003

Replies: 11

Views: 4K

Undergrad Scientific american article about the nature of gravity.

Nov 26, 2003 · Replies 29 · Dec 3, 2003

Replies: 29

Views: 7K

Discover the Fascinating WEAX Gravity Experiment | Get More Information Here!"

Dec 1, 2003 · Replies 2 · Dec 1, 2003

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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