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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 How Can Time Travel Affect the Past and Future?

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

Replies: 24

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

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

Replies: 4

Graduate Special Relativity to blow your mind

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

Replies: 2

Graduate Three papers by Kowalski-Glikman

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

Replies: 10

Graduate Time Travel - what alot boll'clocks'

Kaspah_2k
Dec 19, 2003 · Replies 19 · Dec 22, 2003

Replies: 19

Graduate Paul Davies' tunneling photon experiment and FTL time reversal

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

Replies: 4

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

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

3

Replies: 75

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

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

Replies: 4

Graduate Speed of Light Remains Constant

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

Replies: 8

Graduate Does heating an object increase its weight?

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

Replies: 9

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

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

Replies: 2

Graduate Simple proof that SR is self contradictory

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

Replies: 8

Graduate Proving Relativistic Invariance of Electric and Magnetic Field Dot Product

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

Replies: 2

Hubble observations raise questions about time, gravity, and space

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

Replies: 19

Graduate On The Non Relativity Of Simultaneity

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

2

Replies: 37

Graduate Maxwell's eqn in invariant form

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

Replies: 3

Graduate Frame dragging by a black hole

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

Replies: 5

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

Carlos Hernandez
Dec 17, 2003 · Replies 7 · Dec 17, 2003

Replies: 7

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

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

Replies: 4

Undergrad How do we measure velocity at the first place?

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

Replies: 2

Graduate Why doesn't relativistic velocity addition give speeds over light?

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

Replies: 23

Graduate Understanding the Moon's Position: Relativity and Uncertainty

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

Replies: 7

Graduate Strings, gravity and dark matter

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

Replies: 1

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

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

4

Replies: 108

Graduate Understanding Relativity and Its Effects on Lightspeed

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

2

Replies: 32

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

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

Replies: 2

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

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

Replies: 3

Graduate Velocity Question - How Fast Does It Move?

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

Replies: 4

Graduate Speed of gravity. Whats the problem.

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

Replies: 20

Graduate Spacetime distortion - question

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

Replies: 6

Graduate Relativistic Invariance Part Two

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

Replies: 1

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

Jeebus
Dec 8, 2003 · Replies 1 · Dec 8, 2003

Replies: 1

Undergrad Is a photonic-boom possible?

matthewfullhart
Dec 8, 2003 · Replies 4 · Dec 8, 2003

Replies: 4

Undergrad Why does light always move at c relative to me if we're both moving away?

Poy
Dec 6, 2003 · Replies 8 · Dec 8, 2003

Replies: 8

Graduate Space dynamics in GR anaylysis of black holes

yanniru
Dec 6, 2003 · Replies 4 · Dec 8, 2003

Replies: 4

Graduate Understanding Time Dilation in Accelerating Frames and the Equivalence Principle

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

Replies: 11

Undergrad Accelerating in Space vs Standing in Gravity Well

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

Replies: 23

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

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

Replies: 13

Graduate Looking for the granularity of spacetime

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

Replies: 12

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

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

Replies: 4

Graduate Relativity of Mass or 'Weight' ?

toe21k
Nov 28, 2003 · Replies 6 · Dec 5, 2003

Replies: 6

Graduate Radioactive decay in relativistic frames

Tyro
Dec 4, 2003 · Replies 4 · Dec 5, 2003

Replies: 4

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

wolram
Dec 1, 2003 · Replies 7 · Dec 4, 2003

Replies: 7

Graduate The GF (The gravitational force)

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

Replies: 1

Graduate One unanswered question about Aether

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

Replies: 25

Graduate GR's Tests validity over other theories

toe21k
Nov 27, 2003 · Replies 11 · Dec 3, 2003

Replies: 11

Undergrad Scientific american article about the nature of gravity.

wasteofo2
Nov 26, 2003 · Replies 29 · Dec 3, 2003

Replies: 29

What is the WEAX gravity experiment?

wolram
Dec 1, 2003 · Replies 2 · Dec 1, 2003

Replies: 2

Graduate What is the More Accurate Value for G?

selfAdjoint
Nov 30, 2003 · Replies 1 · Nov 30, 2003

Replies: 1

High School Is a Day Actually 24 Hours? The Theories and Our Perception

Erdem
Nov 28, 2003 · Replies 2 · Nov 28, 2003

Replies: 2

Graduate Do photons effectivley travel instantaneously?

Pyrokenesis
Nov 23, 2003 · Replies 3 · Nov 28, 2003

Replies: 3

Graduate FTL Signals and the Paradox of Causality

Sanders
Nov 27, 2003 · Replies 3 · Nov 27, 2003

Replies: 3

Graduate Does time travel create duplicate matter and destabilize the universe?

Eepl
Nov 24, 2003 · Replies 4 · Nov 26, 2003

Replies: 4

Graduate Did the Michelson-Morley test account for time dilation at the equator?

Eepl
Nov 21, 2003 · Replies 6 · Nov 25, 2003

Replies: 6

Undergrad Does stronger gravity slow aging or speed up time?

Quanta-Man
Nov 21, 2003 · Replies 2 · Nov 21, 2003

Replies: 2

Graduate Contradicting Physics Beyond the Standard Model

wolram
Nov 11, 2003 · Replies 26 · Nov 21, 2003

Replies: 26

Graduate Is Gravity Caused by Non-Linear Time Dilation?

spacetravel101
Nov 15, 2003 · Replies 30 · Nov 20, 2003

2

Replies: 30

Graduate What is the origin of mass and the progress in physics?

SpaceGuy
Oct 20, 2003 · Replies 57 · Nov 20, 2003

2

Replies: 57

Graduate Energy redshift paradox in the Schwarzschild solution

Greg Bernhardt
Nov 13, 2003 · Replies 2 · Nov 20, 2003

Replies: 2

Graduate Does relativity imply alternate realities?

jeffceth
Nov 18, 2003 · Replies 4 · Nov 20, 2003

Replies: 4

Undergrad Can two spaceships traveling opposite directions each go 0.99c?

Juxt
Nov 15, 2003 · Replies 7 · Nov 18, 2003

Replies: 7

Graduate New Bekenstein paper on BH and Information

marcus
Nov 13, 2003 · Replies 7 · Nov 17, 2003

Replies: 7

Graduate Does time travel violate conservation of energy?

think
Nov 16, 2003 · Replies 7 · Nov 17, 2003

Replies: 7

Graduate Special Relativity and radioactive nucleus

Pyrokenesis
Nov 14, 2003 · Replies 15 · Nov 15, 2003

Replies: 15

Undergrad Does the Theory of Relativity Affect the Concept of Mass?

Merkur
Nov 13, 2003 · Replies 4 · Nov 14, 2003

Replies: 4

Undergrad Determining Age of Universe w/ Hubbles Constant

radius
Nov 13, 2003 · Replies 2 · Nov 14, 2003

Replies: 2

Graduate Tutorial on the Christoffel equation used in relativity

einsteinian77
Nov 10, 2003 · Replies 2 · Nov 14, 2003

Replies: 2

Undergrad Speed of Laser on Spaceship Traveling at 0.5c?

andytran
Nov 12, 2003 · Replies 3 · Nov 12, 2003

Replies: 3

Graduate Does a photon lose potential energy and momentum when approaching a mass?

lavalamp
Nov 10, 2003 · Replies 5 · Nov 12, 2003

Replies: 5

Graduate EPR correlation in anti-mirror symmetric universes

Leo
Oct 16, 2003 · Replies 18 · Nov 11, 2003

Replies: 18

Graduate QG Troubles: Problems Connected with Quantum Gravity

wolram
Nov 8, 2003 · Replies 7 · Nov 9, 2003

Replies: 7

Graduate Is the speed of gravity really being tested with this experiment?

wolram
Nov 7, 2003 · Replies 3 · Nov 8, 2003

Replies: 3

Graduate Why is the spacetime interval t²-x² kept constant?

Merkur
Nov 7, 2003 · Replies 3 · Nov 8, 2003

Replies: 3

Undergrad Relationship between general and special relativity

silver
Nov 5, 2003 · Replies 17 · Nov 7, 2003

Replies: 17

Undergrad How do the trampoline and curved cube models of spacetime distortion relate?

Jeebus
Nov 6, 2003 · Replies 4 · Nov 7, 2003

Replies: 4

Graduate Contraviant and covariant tensor

jby
Oct 16, 2003 · Replies 10 · Nov 6, 2003

Replies: 10

Graduate Can Faster-Than-Light Travel Break Causality in General Relativity?

drag
Oct 6, 2003 · Replies 12 · Nov 6, 2003

Replies: 12

Undergrad Does Faster Speed Increase Mass?

Nim
Nov 4, 2003 · Replies 11 · Nov 5, 2003

Replies: 11

High School What is the actual equation of e=mc^2?

alchemist
Nov 2, 2003 · Replies 6 · Nov 4, 2003

Replies: 6

High School Formula for gravitational energy

wolram
Nov 3, 2003 · Replies 4 · Nov 4, 2003

Replies: 4

Graduate General relativity and quantam - what would happen?

dre
Oct 28, 2003 · Replies 1 · Nov 4, 2003

Replies: 1

High School Does Sitting in Glass Alter Your Perception of Time Due to Light Speed?

cucumber
Nov 4, 2003 · Replies 1 · Nov 4, 2003

Replies: 1

Graduate How can gravity escape a black hole if gravitons can't?

Kannan Kailas
Nov 4, 2003 · Replies 2 · Nov 4, 2003

Replies: 2

Graduate What Causes Black Holes to Form?

NateTG
Oct 30, 2003 · Replies 20 · Nov 3, 2003

Replies: 20

Graduate What Causes Gravity and How Does It Warp Space-Time?

spinning head
Oct 30, 2003 · Replies 8 · Oct 31, 2003

Replies: 8

Graduate The Unexistence of Singularity Inside the Event Horizon

Herra Tohtori
Oct 30, 2003 · Replies 12 · Oct 31, 2003

Replies: 12

Graduate What Are the Real Implications of Time Travel?

Mr.E Man
Oct 21, 2003 · Replies 10 · Oct 30, 2003

Replies: 10

Graduate What affect would antigravity have on time?

Sikz
Oct 7, 2003 · Replies 4 · Oct 30, 2003

Replies: 4

Graduate Expansion slows down and then speeds up

marcus
Sep 18, 2003 · Replies 3 · Oct 29, 2003

Replies: 3

Graduate Just what we need, a finite dodecahedral universe

marcus
Oct 16, 2003 · Replies 6 · Oct 27, 2003

Replies: 6

Graduate The Nature of Gravity: Unifying Forces in Physics Through General Relativity

Glenn
Oct 23, 2003 · Replies 7 · Oct 27, 2003

Replies: 7

Undergrad Is gravity an energy or an outcome of energy?

scott_sieger
Oct 24, 2003 · Replies 3 · Oct 24, 2003

Replies: 3

Undergrad Does Laser Light Bend Near Large Masses Like Starlight?

Tyloki
Oct 21, 2003 · Replies 6 · Oct 24, 2003

Replies: 6

Graduate How Does Mass Influence the Curvature of Space-Time?

Muon12
Oct 13, 2003 · Replies 8 · Oct 23, 2003

Replies: 8

Graduate What is the nature of the time continuum and how does it function?

scott_sieger
Oct 22, 2003 · Replies 3 · Oct 22, 2003

Replies: 3

Graduate Hofstra differential geometry and general relativity text: suitable for learning?

pmb
Oct 15, 2003 · Replies 2 · Oct 19, 2003

Replies: 2

Graduate New speculation about cause of dark energy

marcus
Oct 11, 2003 · Replies 2 · Oct 19, 2003

Replies: 2

Graduate How Does a Relativity Reference Frame Impact Quantum Measurements?

hey.like
Oct 10, 2003 · Replies 2 · Oct 18, 2003

Replies: 2

Graduate Can Two Observers Traveling at .75c Perceive Each Other Exceeding Light Speed?

briv
Sep 21, 2003 · Replies 7 · Oct 18, 2003

Replies: 7

Graduate Can quantum physics explain how something arose from nothing?

bettysfetish
Oct 6, 2003 · Replies 30 · Oct 15, 2003

2

Replies: 30

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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