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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 What Is Your Perspective on the Event Horizon?

LocktnLoaded
May 17, 2005 · Replies 2 · May 24, 2005

Replies: 2

Graduate Moving Through the 4th Dimension - Feasible?

jlorino
Oct 26, 2004 · Replies 37 · May 24, 2005

2

Replies: 37

Undergrad What is the difference between energy and relativistic mass?

nwall
May 9, 2005 · Replies 32 · May 23, 2005

2

Replies: 32

Undergrad Question regarding the expanding universe

Tage
May 19, 2005 · Replies 5 · May 21, 2005

Replies: 5

Graduate Why does the ADM formalism have a non-trivial spatial metric tensor?

member 11137
May 18, 2005 · Replies 12 · May 20, 2005

Replies: 12

Undergrad Recommended books for learning general relativity and tensors

wolram
May 16, 2005 · Replies 10 · May 19, 2005

Replies: 10

Graduate Is time truly finite or does it exist simultaneously in all moments?

infinitetime
May 7, 2005 · Replies 15 · May 19, 2005

Replies: 15

Undergrad Where can I find Einstein's derivation of E=mc² in English?

Iraides Belandria
May 17, 2005 · Replies 4 · May 19, 2005

Replies: 4

High School If time stopped completely, what would happen?

Nightsky
May 17, 2005 · Replies 8 · May 18, 2005

Replies: 8

Graduate Speeding into a supersize black hole

Anders Lundberg
May 18, 2005 · Replies 2 · May 18, 2005

Replies: 2

Graduate Can we travel into the past with space time physics?

BenGoodchild
May 15, 2005 · Replies 15 · May 18, 2005

Replies: 15

Graduate Particles approching the speed of light

Honorable_Death
May 16, 2005 · Replies 17 · May 18, 2005

Replies: 17

Where can I find PDF Black holes White Dwars and Neutron Stars

Neitrino
May 10, 2005 · Replies 2 · May 17, 2005

Replies: 2

Undergrad Why do people on Earth age more than a light-speed traveler?

clnotx
May 10, 2005 · Replies 19 · May 16, 2005

Replies: 19

Graduate General Coordinate Transformations

Neitrino
May 16, 2005 · Replies 2 · May 16, 2005

Replies: 2

Graduate Why don't the two frames in the twin paradox see each other's clocks running slower?

ramollari
Oct 22, 2004 · Replies 130 · May 14, 2005

5

Replies: 130

Undergrad Spinning wheel and light speed

haynewp
May 13, 2005 · Replies 12 · May 14, 2005

Replies: 12

Graduate What is the causal structure of a black hole collapse?

wangyi
May 11, 2005 · Replies 14 · May 14, 2005

Replies: 14

High School Can a Pocket Watch Keep Ticking at Light Speed?

ArielGenesis
May 11, 2005 · Replies 5 · May 12, 2005

Replies: 5

Undergrad What programs are most successfull for visualization physical processess?

Neitrino
May 11, 2005 · Replies 3 · May 12, 2005

Replies: 3

Graduate Curvatures in spacetime explained by momentum?

michael879
May 2, 2005 · Replies 11 · May 12, 2005

Replies: 11

Graduate Does Relativity Affect Energy Conservation in Gravity-Driven Systems?

gonzo
May 10, 2005 · Replies 7 · May 12, 2005

Replies: 7

Undergrad Time dilation and radioactive decay

GOD__AM
May 11, 2005 · Replies 4 · May 11, 2005

Replies: 4

Graduate Why time traveling (To the past) is impossible.

Big Evil
May 9, 2005 · Replies 5 · May 11, 2005

Replies: 5

Graduate Relativistic velocity in the time dimension

Mortimer
Apr 29, 2005 · Replies 17 · May 11, 2005

Replies: 17

Undergrad What if gravity worked differently?

Baggio
May 4, 2005 · Replies 36 · May 11, 2005

2

Replies: 36

Graduate Does gravitational field propagation slow down with light near black holes?

Pizer
May 10, 2005 · Replies 3 · May 11, 2005

Replies: 3

Undergrad Is Time the Only 4th Dimension in Relativity?

oldunion
May 9, 2005 · Replies 7 · May 11, 2005

Replies: 7

Graduate Perception and Proximity near a Black Hole: A Curious Exploration

NoClue
May 10, 2005 · Replies 4 · May 10, 2005

Replies: 4

Graduate On photons in perpendicular directions

Raparicio
Apr 3, 2005 · Replies 3 · May 10, 2005

Replies: 3

Graduate Do White Holes Create Lumps in Spacetime?

Honorable_Death
May 4, 2005 · Replies 15 · May 10, 2005

Replies: 15

Graduate Reconciling three statements about crossing a black hole's event horizon

Ich
Apr 26, 2005 · Replies 30 · May 10, 2005

2

Replies: 30

Undergrad At what kinetic energy do electrons become relativistic?

IntuitioN
Apr 28, 2005 · Replies 20 · May 10, 2005

Replies: 20

Graduate Does increased velocity increase gravity?

michael879
May 5, 2005 · Replies 10 · May 9, 2005

Replies: 10

Graduate Gravity and the scale of matter.

curvedlogic
Apr 24, 2005 · Replies 14 · May 8, 2005

Replies: 14

Graduate Four questions on relativity, mirror reflections, virtual particles and physics

daytripper
May 7, 2005 · Replies 12 · May 8, 2005

Replies: 12

Graduate Derivation of Christoffel symbol

rolandk
May 7, 2005 · Replies 10 · May 7, 2005

Replies: 10

Graduate How Does Near-Light Speed Affect Satellite Pulse Reception on Earth?

Pengwuino
May 6, 2005 · Replies 7 · May 7, 2005

Replies: 7

Graduate Curving space - it is the Higgs?

Triton
Apr 29, 2005 · Replies 2 · May 7, 2005

Replies: 2

Graduate Why does proper time depend on choosing a rest frame?

TheAntiRelative
May 3, 2005 · Replies 11 · May 6, 2005

Replies: 11

Undergrad Light always wants to travel in a straight line

UrbanXrisis
May 5, 2005 · Replies 8 · May 6, 2005

Replies: 8

Graduate Why does the rubber sheet analogy fail for equal masses?

Michael Dmitriyev
May 5, 2005 · Replies 9 · May 6, 2005

Replies: 9

Graduate Mass Transference: Can Light be Converted to Matter?

oldunion
May 5, 2005 · Replies 6 · May 6, 2005

Replies: 6

Graduate Gravity is really curves in space time

michael879
May 2, 2005 · Replies 14 · May 5, 2005

Replies: 14

Can Time Travel into the Past Ever Be Possible?

lvlastermind
Apr 27, 2005 · Replies 44 · May 5, 2005

2

Replies: 44

Graduate Is space dependent on the presence of matter?

Starship
Apr 30, 2005 · Replies 11 · May 5, 2005

Replies: 11

Graduate Finding the contraction formula using proper time

robert Ihnot
Apr 30, 2005 · Replies 16 · May 4, 2005

Replies: 16

Graduate Photon Energy when Doppler Shifted

smyri
Apr 13, 2005 · Replies 35 · May 2, 2005

2

Replies: 35

Graduate What is the street number of the last house passed crossing a black hole horizon?

Zanket
Apr 27, 2005 · Replies 28 · May 2, 2005

Replies: 28

Graduate General Relativity and Theory of Spinors

member 11137
Feb 6, 2005 · Replies 14 · May 1, 2005

Replies: 14

Graduate Can an electron's mass curve spacetime and create frame dragging?

kalikid021
Mar 18, 2005 · Replies 6 · Apr 30, 2005

Replies: 6

Undergrad Length contraction and time dilation

eok20
Apr 29, 2005 · Replies 7 · Apr 30, 2005

Replies: 7

Graduate Objects turning into a black hole near the speed of light?

yeus
Apr 26, 2005 · Replies 33 · Apr 29, 2005

2

Replies: 33

Graduate Information needed on two wheels and chain apparent paradox in SR

sar_sar
Apr 28, 2005 · Replies 14 · Apr 28, 2005

Replies: 14

Graduate Was there anything before the Big Bang singularity?

oldunion
Apr 27, 2005 · Replies 6 · Apr 28, 2005

Replies: 6

Graduate Closed orbit light rays in Schwarzschild metric

JohanL
Apr 21, 2005 · Replies 2 · Apr 28, 2005

Replies: 2

Graduate How does spacetime curvature explain gravity?

mosfet_2005au
Apr 28, 2005 · Replies 6 · Apr 28, 2005

Replies: 6

Graduate The energy-momentum tensor and the equivalence principle

hellfire
Apr 26, 2005 · Replies 23 · Apr 28, 2005

Replies: 23

Graduate Why is the twin paradox called a paradox if relativity explains it?

marconism
Apr 22, 2005 · Replies 15 · Apr 28, 2005

Replies: 15

Graduate Temperature and observer velocity

Iraides Belandria
Apr 16, 2005 · Replies 8 · Apr 28, 2005

Replies: 8

Graduate Equivalence without relativity

Chronos
Apr 26, 2005 · Replies 12 · Apr 28, 2005

Replies: 12

Graduate What is Space? A Theory Exploration

cAm
Dec 7, 2004 · Replies 54 · Apr 28, 2005

2

Replies: 54

Graduate Are special and general relativity experimentally proven?

cj
Apr 26, 2005 · Replies 16 · Apr 26, 2005

Replies: 16

Graduate Does parallel transport around spacetime loops have physical meaning in GR?

kleinwolf
Apr 24, 2005 · Replies 16 · Apr 26, 2005

Replies: 16

Graduate Age of the universe - absolute or relative?

Frank3
Apr 25, 2005 · Replies 6 · Apr 26, 2005

Replies: 6

Graduate Are the laws of motion independent of time and space?

InvariantBrian
Apr 12, 2005 · Replies 27 · Apr 25, 2005

Replies: 27

Graduate What is the Time Dilation Relationship Near a Black Hole's Event Horizon?

Samuel A. (Sam) Cox
Apr 24, 2005 · Replies 2 · Apr 25, 2005

Replies: 2

Graduate Does the equivalence principle hold for charged particles?

pianoplayer
Apr 18, 2005 · Replies 30 · Apr 25, 2005

2

Replies: 30

Undergrad Time Dilation: Gravity's Effect on Time

penguinraider
Apr 17, 2005 · Replies 5 · Apr 24, 2005

Replies: 5

Graduate Can a New Gravity Theory Rival Einstein's Predictions?

Crosson
Apr 22, 2005 · Replies 7 · Apr 22, 2005

Replies: 7

Graduate Why do we need both covariant and contravariant vectors?

Baggio
Apr 22, 2005 · Replies 7 · Apr 22, 2005

Replies: 7

Graduate Does time expand with space in an expanding universe?

ShadowKnight
Apr 11, 2005 · Replies 34 · Apr 22, 2005

2

Replies: 34

Graduate Can a Centrifuge Experiment Demonstrate Reciprocity in Special Relativity?

Jeff273
Apr 20, 2005 · Replies 14 · Apr 21, 2005

Replies: 14

Graduate Components and basis transform differently

Ratzinger
Apr 21, 2005 · Replies 4 · Apr 21, 2005

Replies: 4

Graduate Cosmological Questions and Their Degenerate Answers

cosmoboy
Apr 14, 2005 · Replies 32 · Apr 21, 2005

2

Replies: 32

Undergrad How can I plot the altitude of a capsule during re-entry?

phiska
Apr 21, 2005 · Replies 2 · Apr 21, 2005

Replies: 2

Undergrad How Long Does a Meter Stick Appear When Traveling at Light Speed?

Aprilshowers
Apr 20, 2005 · Replies 3 · Apr 20, 2005

Replies: 3

High School Why the speed of light is so fast?

PhysKid24
Apr 13, 2005 · Replies 12 · Apr 20, 2005

Replies: 12

Graduate Solving Ball's Shadow: Theoretical Analysis

The Rev
Apr 19, 2005 · Replies 2 · Apr 19, 2005

Replies: 2

Graduate Geometry vs Particles: Einstein's Perspective on Gravity

infidel
Apr 19, 2005 · Replies 3 · Apr 19, 2005

Replies: 3

Graduate How Are Wormholes Created and Can Water Hold Them Open?

Someone502
Apr 18, 2005 · Replies 6 · Apr 19, 2005

Replies: 6

Graduate Good online report about wormholes?

Sauron
Mar 31, 2005 · Replies 7 · Apr 19, 2005

Replies: 7

Graduate Inhomogeneous and anisotropic dust models

hellfire
Apr 14, 2005 · Replies 6 · Apr 19, 2005

Replies: 6

Graduate Electron in Earth Orbit: Does it Emit Radiation?

yogi
Apr 18, 2005 · Replies 4 · Apr 19, 2005

Replies: 4

Graduate Viewing the Big Bang? Answers for AstroGeek Toby

Tobasco
Apr 19, 2005 · Replies 2 · Apr 19, 2005

Replies: 2

Graduate What does imaginary time mean in spacetime separation?

chaoszen
Apr 18, 2005 · Replies 13 · Apr 19, 2005

Replies: 13

Undergrad Why is the Twins Paradox Confusing in Relativity?

Someone502
Apr 18, 2005 · Replies 6 · Apr 19, 2005

Replies: 6

Graduate Why does relativistic acceleration not align with force?

quasar987
Apr 18, 2005 · Replies 3 · Apr 18, 2005

Replies: 3

Graduate Why is the Principle of Equivalence considered a theorem?

vinter
Apr 14, 2005 · Replies 15 · Apr 18, 2005

Replies: 15

Graduate How Time Passes Differently for Twins Traveling at Light Speed

Prague
Apr 3, 2005 · Replies 105 · Apr 17, 2005

4

Replies: 105

Graduate A wrong statement regarding SR.

misogynisticfeminist
Apr 16, 2005 · Replies 3 · Apr 16, 2005

Replies: 3

Undergrad Does special relativity disprove the ether?

Spastik_Relativity
Apr 6, 2005 · Replies 3 · Apr 15, 2005

Replies: 3

Graduate How does the weight of a rock change in relativistic speeds?

The Rev
Mar 29, 2005 · Replies 6 · Apr 15, 2005

Replies: 6

Graduate The Physics of Falling into a Black Hole: Time Dilation and the Event Horizon

The Rev
Apr 11, 2005 · Replies 22 · Apr 15, 2005

Replies: 22

Graduate Light Speed Not Constant: Impact on E=mc^2

lwymarie
Apr 15, 2005 · Replies 5 · Apr 15, 2005

Replies: 5

Graduate A new epistemology of Relativity

Raparicio
Apr 5, 2005 · Replies 4 · Apr 15, 2005

Replies: 4

Graduate Is Temperature Independent of Observer Velocity in Relativity?

Iraides Belandria
Apr 9, 2005 · Replies 5 · Apr 15, 2005

Replies: 5

Graduate Limit as the Speed of Light becomes Infinite

Crosson
Apr 12, 2005 · Replies 11 · Apr 14, 2005

Replies: 11

Graduate Do black holes affect the path of photons and neutrinos?

mee
Apr 6, 2005 · Replies 15 · Apr 14, 2005

Replies: 15

Undergrad Charged particle moving relativistically through E field

eck
Apr 13, 2005 · Replies 3 · Apr 14, 2005

Replies: 3

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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