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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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Undergrad Speed of gravity experiments and space probe B

juan avellaneda
Mar 2, 2004 · Replies 2 · Mar 2, 2004

Replies: 2

Graduate Can we measure absolute velocity?

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

Replies: 10

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

O Great One
Feb 19, 2004 · Replies 51 · Mar 2, 2004

2

Replies: 51

Graduate What is actually expanding in the Robertson-Walker metric?

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

Replies: 27

Graduate What is the connection between time dilation and gravity?

the_truth
Mar 1, 2004 · Replies 4 · Mar 1, 2004

Replies: 4

Graduate How do you calculate time dilation between objects of different masses?

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

2

Replies: 47

Graduate What is space-time made out of ?

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

2

Replies: 34

Graduate Time dilation relationship between gravity and velocity.

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

Replies: 15

Graduate One way Speed of Light measured by a Single Clock

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

Replies: 8

Graduate Schwarzschild Metric Question again

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

Replies: 2

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

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

Replies: 4

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

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

Replies: 4

Graduate The speed of light in a Schwarzschild space-time

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

Replies: 6

Graduate Thought experiment(escape from black holes)

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

Replies: 11

Graduate Experimental proof of Mach's principle?

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

Replies: 6

Graduate Longitudinal and Transverse Mass

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

Replies: 2

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

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

Replies: 2

Graduate What is the mechanism for expansion

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

Replies: 2

Graduate Why is there no discussion of gravitational blueshift from high altitude to ground?

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

Replies: 17

Graduate What are the latest developments in quantum gravity?

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

Replies: 2

Graduate Is Lorentz symmetry violation possible for electrons and photons?

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

Replies: 4

Graduate Self Creation Cosmology and its testable predictions versus General Relativity

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

Replies: 2

Undergrad Solving Time Dilation Question from Simply Einstein

Be Happy!
Feb 16, 2004 · Replies 7 · Feb 17, 2004

Replies: 7

Graduate How did Einstein derive his relativity formulas?

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

Replies: 5

Graduate New Lineweaver paper/Superluminal expansion speeds

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

Replies: 10

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

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

Replies: 2

Graduate What is the force propelling us through time?

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

2

Replies: 55

Undergrad Did special relativity arise to explain the Michelson-Morley experiment?

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

Replies: 4

Graduate Special Relativity in a Periodic Universe

beardless2
Feb 15, 2004 · Replies 2 · Feb 16, 2004

Replies: 2

Graduate Timelike geodesics might not be maxima of the proper time

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

Replies: 7

Graduate Why time travel to the past is physically impossible

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

Replies: 4

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

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

Replies: 22

Graduate SR and the earth, sun, and galaxy.

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

5

Replies: 122

Graduate Equation that predicts the increasing values of mass

8LPF16
Jan 9, 2004 · Replies 37 · Feb 14, 2004

2

Replies: 37

Undergrad What are the implications of time being relative?

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

Replies: 3

Graduate GammaRayBursts as standard candles to judge dark energy

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

Replies: 18

Graduate Does relativistic mass increase gravitational force in SR?

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

Replies: 12

Graduate Arguments of lawyer against relativity

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

Replies: 12

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

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

Replies: 29

Graduate Is gravity the acceleration from following tighter curves in spacetime?

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

Replies: 18

Graduate Bending Light: Gravity, Invisibility and Orbit

godspeed
Feb 8, 2004 · Replies 2 · Feb 9, 2004

Replies: 2

Graduate What is Einstein's Box in Physics?

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

Replies: 6

Graduate Light Clock Thought Experiment: Parallel Moving Mirrors

yogi
Feb 5, 2004 · Replies 7 · Feb 8, 2004

Replies: 7

Graduate Questions About General Theory of Relativity

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

Replies: 26

Graduate Relativistic Mass as Gravitational Charge

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

Replies: 7

Undergrad Expanding people in an expanding universe?

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

2

Replies: 36

Graduate What is the Mass Tensor in Relativity?

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

Replies: 23

Graduate Magnetic distortion of spacetime

wolram
Feb 5, 2004 · Replies 2 · Feb 5, 2004

Replies: 2

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

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

Replies: 27

Undergrad Einstein's Modified Newton's Equation of Motion

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

Replies: 17

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

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

2

Replies: 33

Graduate Multiple Universe: Could Black Holes Create New Universes?

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

Replies: 8

Undergrad What if the speed of light was slower?

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

Replies: 21

Graduate Is Gravity a Substance or a Wave?

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

Replies: 5

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

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

Replies: 4

Graduate Energy, Mass and Expansion of Universe

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

Replies: 2

Graduate Redshift Jumps: New Evidence of Quantization?

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

Replies: 4

Graduate Does Simultaneity Truly Exist in the Universe?

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

2

Replies: 32

Graduate Are Tachyons Just a Science Fiction Dream?

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

Replies: 7

Undergrad I admit, I only had wrong impression

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

Replies: 2

Undergrad Gravity and the Speed of Gravitational Influence

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

Replies: 12

Graduate Does gravity accelerate or slow photons if it bends their paths?

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

Replies: 23

Undergrad What Is Relativistic Kinematics?

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

Replies: 2

Graduate Two Kinds of Time: Length Contraction and Time Dilation

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

Replies: 11

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

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

Replies: 3

Graduate Gravitational redshift model with variable photon mass

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

Replies: 3

Graduate Is Fine Structure Invariant Over Cosmological Time Scales?

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

Replies: 13

Graduate Increasing expantional speed of the universe

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

Replies: 7

Graduate Does binding energy mass loss require quantum mechanics or just relativity?

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

Replies: 6

Graduate Gauge groups and symmetry groups in general relativity and quantum gravity

alexh110
Jan 12, 2004 · Replies 1 · Jan 19, 2004

Replies: 1

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

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

Replies: 6

Graduate Is Linear Momentum Conserved in Relativistic Angular Acceleration?

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

Replies: 13

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

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

Replies: 3

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

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

Replies: 2

Graduate The infinite improbability drive, revisited again.

rtharbaugh1
Jan 13, 2004 · Replies 8 · Jan 15, 2004

Replies: 8

Graduate Thought experiment for using Black Holes for cmmunication

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

Replies: 2

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

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

Replies: 2

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

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

Replies: 23

Undergrad Why does accelerating massive objects to light speed require infinite energy?

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

Replies: 16

Graduate Time changes in gravity field.

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

Replies: 18

Graduate Modern Special Relativity and Mass

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

2

Replies: 30

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

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

Replies: 4

Graduate Special Relativity Contains Massive Error

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

3

Replies: 60

Graduate 1905 Special Relativity theory Time dilation

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

2

Replies: 45

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

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

Replies: 12

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

timejim
Jan 1, 2004 · Replies 2 · Jan 8, 2004

Replies: 2

Undergrad How Fast Do Mechanical Forces Travel Through Different Mediums?

jay
Jan 1, 2004 · Replies 3 · Jan 7, 2004

Replies: 3

Undergrad QM or Relativity first for self learners?

Tyro
Jan 6, 2004 · Replies 3 · Jan 7, 2004

Replies: 3

Graduate Does acceleration require a fourth spatial dimension?

Jimmy
Jan 2, 2004 · Replies 5 · Jan 2, 2004

Replies: 5

Graduate How does SR work at speeds greater than c?

aychamo
Jan 1, 2004 · Replies 5 · Jan 2, 2004

Replies: 5

Graduate Can Light Pulse Peaks Really Travel Faster Than C?

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

Replies: 6

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

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

Replies: 1

Graduate To see there is easier than to be there

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

Replies: 7

Undergrad Can Timelines Intersect or Travel in Different Directions?

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

Replies: 2

Graduate About null and timelike geodesics

Astronomer107
May 17, 2003 · Replies 5 · Dec 29, 2003

Replies: 5

Graduate Why the notion of covariance in GR is so important

Kalimaa23
Dec 27, 2003 · Replies 13 · Dec 29, 2003

Replies: 13

Graduate Notation of General Relativity

Mike2
Dec 22, 2003 · Replies 5 · Dec 28, 2003

Replies: 5

Graduate Do photons see other photons moving at light speed?

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

Replies: 2

Graduate Time travel into the past is logically possible

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

3

Replies: 80

Graduate How Can Time Travel Affect the Past and Future?

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

Replies: 24

sidebar

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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