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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 Does Special Relativity Suggest a Predetermined Future?

yogi
Jan 17, 2005 · Replies 46 · Jan 27, 2005

2

Replies: 46

Undergrad Start Learning Relativity: Books for Beginners

Infamo
Jan 26, 2005 · Replies 2 · Jan 26, 2005

Replies: 2

Graduate Twins/triplets again, but truly symmetric

iq2150
Dec 28, 2004 · Replies 9 · Jan 26, 2005

Replies: 9

Graduate Massive objects going 99.9% speed of light.

mapper
Jan 19, 2005 · Replies 12 · Jan 26, 2005

Replies: 12

Graduate How Do Muons Travel from the Atmosphere to Earth Despite Their Short Lifespan?

gyani
Jan 17, 2005 · Replies 2 · Jan 24, 2005

Replies: 2

Undergrad Can objects travel faster than light in relativity?

hadeka
Jan 13, 2005 · Replies 8 · Jan 24, 2005

Replies: 8

Graduate Understanding Relativity: The Reality of Time and Space

Moneer81
Jan 21, 2005 · Replies 15 · Jan 24, 2005

Replies: 15

Graduate Hell all me life or death situation

hype_chicky
Jan 23, 2005 · Replies 3 · Jan 24, 2005

Replies: 3

Graduate What Number Boxcar Will Sam Stop At?

grounded
Jan 22, 2005 · Replies 11 · Jan 23, 2005

Replies: 11

Graduate Particle Energy in Schutz's "A First Course in General Relativity

hellfire
Jan 16, 2005 · Replies 34 · Jan 23, 2005

2

Replies: 34

Undergrad What Makes Light Travel at Speed C?

jay2005
Jan 15, 2005 · Replies 2 · Jan 22, 2005

Replies: 2

Graduate The first failure of relativity?

wolram
Jan 21, 2005 · Replies 8 · Jan 22, 2005

Replies: 8

Graduate Can Geometry Explain Electricity and Magnetism Like Gravity?

metrictensor
Jan 13, 2005 · Replies 4 · Jan 21, 2005

Replies: 4

Undergrad Mass and Energy: Photons, Energy, and Light Speed

pnazari
Jan 21, 2005 · Replies 6 · Jan 21, 2005

Replies: 6

Graduate H Ziegler - Does any one have any info on him?

Haemon
Jan 11, 2005 · Replies 2 · Jan 20, 2005

Replies: 2

Graduate What is the true nature of Spacetime?

QuantumDefect
Jan 20, 2005 · Replies 4 · Jan 20, 2005

Replies: 4

Graduate Generalized Lorentz Transformation for an Accelerated Frame of Reference

Project
Jan 16, 2005 · Replies 10 · Jan 19, 2005

Replies: 10

Graduate Mechanical Time Dilation: Explained

akashdgr8
Jan 19, 2005 · Replies 2 · Jan 19, 2005

Replies: 2

Graduate What is the true meaning of E=mc² in mass-energy conversion?

K8181
Jan 18, 2005 · Replies 6 · Jan 19, 2005

Replies: 6

Graduate Is There a Discrepancy Between Inertial and Gravitational Mass in Relativity?

K8181
Jan 16, 2005 · Replies 9 · Jan 18, 2005

Replies: 9

Undergrad What ever happened with NEC's experiment that exceeded the speed of light?

Glenn
Jan 18, 2005 · Replies 2 · Jan 18, 2005

Replies: 2

Undergrad Confused about black holes and acceleration

hazhar
Jan 18, 2005 · Replies 2 · Jan 18, 2005

Replies: 2

Another view of the concept of time.

Tal D. Noble
Jan 17, 2005 · Replies 3 · Jan 18, 2005

Replies: 3

Graduate A question about movement in 4D

curiouschemist
Jan 10, 2005 · Replies 2 · Jan 17, 2005

Replies: 2

Graduate Understanding Special Relativity: Mass, Energy, and Velocity

phenylalanine
Jan 13, 2005 · Replies 9 · Jan 17, 2005

Replies: 9

Graduate Mass as Curvature in GR: Deriving Inertia as a Force

Crosson
Jan 13, 2005 · Replies 1 · Jan 17, 2005

Replies: 1

Graduate Could a GR expert look at this?

selfAdjoint
Jan 14, 2005 · Replies 11 · Jan 17, 2005

Replies: 11

Graduate Is FTL Travel Within a Light Cone Possible for Time Travel?

Gamish
Jan 10, 2005 · Replies 2 · Jan 17, 2005

Replies: 2

Graduate Help Solve a Mystery: Lawden's "An Introduction to Tensor Calculus

PBRMEASAP
Jan 14, 2005 · Replies 2 · Jan 16, 2005

Replies: 2

Undergrad Can someone explain Einstein's relativity theory?

OsiriS^
Jan 11, 2005 · Replies 69 · Jan 15, 2005

3

Replies: 69

Graduate A question of universal expandsion

James W. Pugh
Dec 22, 2004 · Replies 29 · Jan 14, 2005

Replies: 29

Graduate Find Distance on a 2-Sphere Using Metric Tensor

homology
Jan 13, 2005 · Replies 2 · Jan 14, 2005

Replies: 2

Graduate Can Objects Really Travel Through Forbidden Space Between Black and White Holes?

DB
Jan 12, 2005 · Replies 3 · Jan 13, 2005

Replies: 3

Undergrad Electric Charge Oscillation & Light Waves

metrictensor
Jan 12, 2005 · Replies 13 · Jan 13, 2005

Replies: 13

Graduate Graviton and the equivalence principle

StatusX
Jan 10, 2005 · Replies 7 · Jan 12, 2005

Replies: 7

Graduate Discovered a way to make MOND fully relativistic

pervect
Jan 9, 2005 · Replies 4 · Jan 11, 2005

Replies: 4

Graduate Spacetime wave orbits black hole

s3nn0c
Jan 11, 2005 · Replies 2 · Jan 11, 2005

Replies: 2

Graduate Special Relativity vs Alternatives

yogi
Jan 8, 2005 · Replies 19 · Jan 11, 2005

Replies: 19

Graduate Relative positions in time - How does SRT define them.

Haemon
Jan 8, 2005 · Replies 11 · Jan 10, 2005

Replies: 11

Relativity & Quran: Is Bible Wrong?

physicsuser
Jan 3, 2005 · Replies 2 · Jan 10, 2005

Replies: 2

Graduate How do you calculate time dilation in a gravitational field

Gamish
Jan 1, 2005 · Replies 19 · Jan 9, 2005

Replies: 19

Undergrad The Twin Paradox: Understanding Time Dilation in Space Travel

ElectroPhysics
Dec 7, 2004 · Replies 114 · Jan 8, 2005

4

Replies: 114

Graduate Note the comment on SR herein:

John Ryskamp
Jan 8, 2005 · Replies 2 · Jan 8, 2005

Replies: 2

Undergrad Einstein's Derivation of e=mc^2: Urgent Help Needed

uraknai
Jan 4, 2005 · Replies 5 · Jan 8, 2005

Replies: 5

Graduate Testing the Postulate of Special Relativity

quasar987
Jan 6, 2005 · Replies 12 · Jan 7, 2005

Replies: 12

Undergrad Explaining Special Relativity: Increasing Resistance to Acceleration

DeathKnight
Jan 4, 2005 · Replies 6 · Jan 7, 2005

Replies: 6

Graduate Bob's Spaceship: Length Contradiction & Time Difference

derekmohammed
Jan 5, 2005 · Replies 10 · Jan 7, 2005

Replies: 10

Undergrad Can anyone explain the Twin Paradox in special relativity?

EMR
Jan 6, 2005 · Replies 4 · Jan 7, 2005

Replies: 4

Graduate Ph. D. in Mathematics or Physics (Relativity)

noppakhuns
Dec 30, 2004 · Replies 2 · Jan 7, 2005

Replies: 2

Graduate How Does Relativity Affect Information Exchange Between Moving Observers?

SevenTowers
Dec 30, 2004 · Replies 2 · Jan 6, 2005

Replies: 2

Graduate Light Geodesic Path: Troubleshooting Post Deletion

makc
Jan 4, 2005 · Replies 8 · Jan 6, 2005

Replies: 8

Graduate Why Does a Chain Snap Between Train Cars at High Speeds in Relativity?

Moth
Jan 4, 2005 · Replies 6 · Jan 4, 2005

Replies: 6

Graduate Geometric field / Thirring Lense / Red shift

member 11137
Jan 3, 2005 · Replies 3 · Jan 4, 2005

Replies: 3

Graduate Understanding Gravity: The Curvature of Space-Time and Kinetic Energy

gonzo
Jan 4, 2005 · Replies 3 · Jan 4, 2005

Replies: 3

Graduate What if the guy on the train throws the ball backwards (u'=-.99c)?

jdavel
Dec 23, 2004 · Replies 2 · Jan 3, 2005

Replies: 2

Graduate Is the Missing Mass in Nuclei Equal to Nuclear Potential Energy?

quasar987
Jan 1, 2005 · Replies 19 · Jan 3, 2005

Replies: 19

Graduate Question on feasibility of relativistic travel

Curious3141
Jan 1, 2005 · Replies 7 · Jan 2, 2005

Replies: 7

Undergrad Solving Escape Velocity of the Sun: Troubleshooting an Error

DB
Jan 2, 2005 · Replies 5 · Jan 2, 2005

Replies: 5

Graduate GR & Higgs Field: Linked by Mass?

|2eason
Dec 26, 2004 · Replies 5 · Jan 2, 2005

Replies: 5

Graduate A interesting problem in relativity

Doctordick
Dec 30, 2004 · Replies 4 · Dec 31, 2004

Replies: 4

Graduate Is the Speed of Gravity Equal to the Speed of Light?

Les Sleeth
Dec 11, 2004 · Replies 66 · Dec 30, 2004

3

Replies: 66

Graduate When is the radiation from an accelerated charge a matter of controversy?

Rob Woodside
Dec 25, 2004 · Replies 55 · Dec 29, 2004

2

Replies: 55

Graduate Can Photons Have Reference Frames in Special Relativity?

theFuture
Dec 26, 2004 · Replies 9 · Dec 29, 2004

Replies: 9

Undergrad Relative Velocity of a Car on a Moving Truck

JackRuby
Dec 28, 2004 · Replies 2 · Dec 28, 2004

Replies: 2

Graduate Proving relativistic blueshift with Lorentz transforms only

Curious3141
Dec 27, 2004 · Replies 7 · Dec 27, 2004

Replies: 7

Graduate Mathematically rigorous definition of time ?

roger
Dec 23, 2004 · Replies 16 · Dec 27, 2004

Replies: 16

Undergrad What is the Proper Length of a Ruler in Motion?

CollectiveRocker
Sep 1, 2004 · Replies 13 · Dec 27, 2004

Replies: 13

Graduate Riemann curvature tensor derivation

weio
Dec 23, 2004 · Replies 4 · Dec 27, 2004

Replies: 4

Graduate What is the problem with GR and quantum

woodysooner
Dec 22, 2004 · Replies 7 · Dec 26, 2004

Replies: 7

Graduate If you travel faster than the speed of light, do you open up a black hole?

Gamish
Dec 24, 2004 · Replies 9 · Dec 26, 2004

Replies: 9

Graduate Why arent Plancks constant's relative?

The Quark
Dec 14, 2004 · Replies 15 · Dec 26, 2004

Replies: 15

Graduate Rotating Coordinate Systems: Are Geocentric and Heliocentric Views Equivalent?

broegger
Dec 25, 2004 · Replies 3 · Dec 25, 2004

Replies: 3

Graduate Just how far away is that star?

jnorman
Dec 21, 2004 · Replies 15 · Dec 25, 2004

Replies: 15

Undergrad What is the Gravity Equation for Understanding Mass and Black Holes?

Gamish
Dec 24, 2004 · Replies 3 · Dec 25, 2004

Replies: 3

Graduate Where to Find Theodor Kaluza's Paper Sent to Albert Einstein?

Terry Giblin
Dec 17, 2004 · Replies 2 · Dec 24, 2004

Replies: 2

Graduate Is it Possible to Resolve the SR Time Dilation Problem? Help Needed!

Curious3141
Dec 23, 2004 · Replies 4 · Dec 24, 2004

Replies: 4

Graduate Does Mass Change with Energy Exchange in Orbiting Bodies?

Ivan Seeking
Dec 21, 2004 · Replies 22 · Dec 23, 2004

Replies: 22

Graduate Teaching vs Doing: The Role of Concepts in Research - Insights from Physics

pmb_phy
Dec 17, 2004 · Replies 41 · Dec 23, 2004

2

Replies: 41

Graduate Infinite Time and Hawking Radiation

TheDonk
Dec 17, 2004 · Replies 12 · Dec 22, 2004

Replies: 12

Graduate Exploring Gravity's Peculiar Features: T Padmanabhan's Latest Paper

Wave's_Hand_Particle
Dec 15, 2004 · Replies 2 · Dec 22, 2004

Replies: 2

Graduate Mass Gain in Supernovae & Black Holes: Explaining Unaccounted Mass

drew500
Dec 11, 2004 · Replies 6 · Dec 20, 2004

Replies: 6

Graduate Q theory, Relativistic Mass and Einstein

pmb_phy
Dec 18, 2004 · Replies 15 · Dec 20, 2004

Replies: 15

Gravitation from the Ground Up - B.F. Schutz

pmb_phy
Dec 15, 2004 · Replies 6 · Dec 19, 2004

Replies: 6

Graduate Is universal time the 4th or 5th Dimension?

Terry Giblin
Dec 17, 2004 · Replies 3 · Dec 18, 2004

Replies: 3

Graduate Is Gravity an Attractive Force?

Abstruce
Dec 18, 2004 · Replies 10 · Dec 18, 2004

Replies: 10

Graduate Seeking a Resolution to the Bug-Rivet Paradox

yxgao
Dec 17, 2004 · Replies 4 · Dec 18, 2004

Replies: 4

Graduate Scientific alternative to the anthropic principle

wolram
Dec 16, 2004 · Replies 7 · Dec 16, 2004

Replies: 7

Graduate Beyond c if time goes positive does V decrease?

Royce
Dec 14, 2004 · Replies 8 · Dec 16, 2004

Replies: 8

Graduate Why do photons naturally travel at c?

Gamish
Nov 26, 2004 · Replies 36 · Dec 16, 2004

2

Replies: 36

Graduate Mass of Photon: Consequences & Experiments - L.C. Tu et al (2004)

ZapperZ
Nov 23, 2004 · Replies 78 · Dec 16, 2004

3

Replies: 78

Graduate Is the universe's potential energy related to the mass inside a shell of matter?

Brane Dead
Dec 14, 2004 · Replies 6 · Dec 15, 2004

Replies: 6

Graduate Laws of physics in four-vector form. A question.

lslusa
Dec 14, 2004 · Replies 2 · Dec 14, 2004

Replies: 2

Graduate How objects look at high speeds

gaavslev
Dec 13, 2004 · Replies 2 · Dec 13, 2004

Replies: 2

Graduate Many Worlds Interpretation of SR

Bruninho
Dec 13, 2004 · Replies 4 · Dec 13, 2004

Replies: 4

Graduate Einstein´s work ion Unified Field Theory

mprm86
Dec 12, 2004 · Replies 4 · Dec 13, 2004

Replies: 4

Graduate Paradoxes that have come up for special relativity

Alkatran
Nov 8, 2004 · Replies 39 · Dec 13, 2004

2

Replies: 39

Graduate Technical paper on Lense-Thirring Lageos measurement

marcus
Dec 12, 2004 · Replies 4 · Dec 13, 2004

Replies: 4

Graduate GR Metric Meaning: Unpacking Confusion

speeding electron
Nov 29, 2004 · Replies 41 · Dec 11, 2004

2

Replies: 41

Graduate Does a single photon have 'color'

arrell
Dec 7, 2004 · Replies 13 · Dec 10, 2004

Replies: 13

Graduate Deriving the Special Relativity Formula: A Scientific Approach

dekoi
Dec 10, 2004 · Replies 6 · Dec 10, 2004

Replies: 6

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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