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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 Block Universe / Godel's Paradox / Free Will

autumnwests
Dec 1, 2006 · Replies 16 · Dec 4, 2006

Replies: 16

High School Confused by Physics? Let's Figure it Out

Lil ze
Dec 2, 2006 · Replies 3 · Dec 2, 2006

Replies: 3

Undergrad Understanding the Impact of Angular Velocity on Mass in Rotating Objects

sazzles
Mar 21, 2004 · Replies 35 · Dec 1, 2006

2

Replies: 35

Graduate Do Any Spacetimes with 7 to 9 Killing Vectors Exist?

Stingray
Nov 30, 2006 · Replies 5 · Dec 1, 2006

Replies: 5

Graduate Schwarzschild Solution: Find Rigorous Inside Body

blue_sky
Aug 15, 2004 · Replies 7 · Dec 1, 2006

Replies: 7

Graduate Counting solutions to the EFE?

Chris Hillman
Dec 1, 2006 · Replies 0 · Dec 1, 2006

Replies: 0

Graduate Could someone explain Brans-Dicke theory?

alanzhu
Oct 28, 2003 · Replies 8 · Dec 1, 2006

Replies: 8

Graduate Absolute Time in GR: Einstein Fans Unite!

Karlisbad
Nov 30, 2006 · Replies 4 · Dec 1, 2006

Replies: 4

Graduate How Do Thermodynamic Quantities Change at Speeds Close to Light?

ashishk
Dec 1, 2006 · Replies 1 · Dec 1, 2006

Replies: 1

Graduate Additiion of relativistic velocities. what do we need to derive it

bernhard.rothenstein
Nov 23, 2006 · Replies 9 · Nov 29, 2006

Replies: 9

Graduate AdS Space Horizon - Black Holes & Research

PDEagle
Nov 22, 2006 · Replies 1 · Nov 29, 2006

Replies: 1

Graduate Finding a Kerr Metric Using the Einstein Equation

VuNguyen
Apr 1, 2004 · Replies 4 · Nov 28, 2006

Replies: 4

Graduate Rapidly Spinning Mass Effects on GR & SR Gravitational Field

alpha_wolf
May 4, 2004 · Replies 10 · Nov 28, 2006

Replies: 10

Graduate Basic metric diagonalization questions

lonelyphysicist
May 11, 2006 · Replies 4 · Nov 27, 2006

Replies: 4

Graduate Model of Galactic Black Hole Candidates

pervect
Jun 17, 2006 · Replies 1 · Nov 27, 2006

Replies: 1

Graduate Electric fields of black holes

jbusc
Jul 25, 2006 · Replies 3 · Nov 27, 2006

Replies: 3

Graduate Stress-energy tensor of a perfect fluid

notknowing
Oct 25, 2006 · Replies 24 · Nov 27, 2006

Replies: 24

Graduate How Does Acceleration Affect the Geodesic Equation in General Relativity?

Karlisbad
Nov 24, 2006 · Replies 1 · Nov 27, 2006

Replies: 1

Graduate A question about Snyder calculation of imploding stars(1939)

Born2Perform
Nov 23, 2006 · Replies 2 · Nov 27, 2006

Replies: 2

Graduate Solutions of the nonlinear Field Equations

notknowing
Oct 13, 2006 · Replies 38 · Nov 27, 2006

2

Replies: 38

Graduate Phone Book's Fans: Shocking Claim on Torsion

dextercioby
Nov 27, 2006 · Replies 2 · Nov 27, 2006

Replies: 2

Graduate How exactly are QM & GR incompatible?

Thrice
Oct 14, 2006 · Replies 14 · Nov 27, 2006

Replies: 14

Graduate Mass in Relativity: Explaining How Velocity Does Not Increase Mass

AlbertEinstein
Nov 19, 2006 · Replies 23 · Nov 26, 2006

Replies: 23

Graduate What does remain constant in relativity?

y_stassin
Nov 21, 2006 · Replies 10 · Nov 25, 2006

Replies: 10

Graduate Gravitational length contraction

notknowing
Nov 25, 2006 · Replies 2 · Nov 25, 2006

Replies: 2

Undergrad Localization by the doppler effect

disregardthat
Nov 22, 2006 · Replies 3 · Nov 24, 2006

Replies: 3

Graduate Schwarzschild Radii and Relativistic Mass

Lelan Thara
Nov 21, 2006 · Replies 10 · Nov 24, 2006

Replies: 10

Graduate By the way, in GR, where does the need for curvature come from ?

lalbatros
Nov 17, 2006 · Replies 11 · Nov 24, 2006

Replies: 11

Graduate Inner Workings of Relativity Clocks - Learn More Here!

ValenceE
Nov 22, 2006 · Replies 4 · Nov 23, 2006

Replies: 4

Graduate Self Gravitating General Solutions to GR

Wallace
Jun 14, 2006 · Replies 3 · Nov 22, 2006

Replies: 3

Graduate Can Event Horizons Be Non-Spherical?

Quaoar
Aug 2, 2006 · Replies 1 · Nov 22, 2006

Replies: 1

Graduate Can gravity waves be focussed?

Chaos' lil bro Order
Sep 22, 2006 · Replies 8 · Nov 22, 2006

Replies: 8

Graduate Gravitational waves everywhere ?

notknowing
Sep 3, 2006 · Replies 7 · Nov 22, 2006

Replies: 7

Graduate Gravitational energy : positive or negative ?

notknowing
Nov 5, 2006 · Replies 10 · Nov 22, 2006

Replies: 10

Graduate What happens to an observer falling into a charged rotating black hole?

pervect
Nov 21, 2006 · Replies 1 · Nov 22, 2006

Replies: 1

Graduate How much is the Schwarzschild geometry a characteristic feature of GR

lalbatros
Nov 18, 2006 · Replies 19 · Nov 22, 2006

Replies: 19

Graduate Why does the Lorentz transformations form a group?

pivoxa15
Oct 23, 2006 · Replies 6 · Nov 22, 2006

Replies: 6

Graduate What is the significance of Ashby's use of the Langevin metric in GPS and GR?

psychedelic
Oct 15, 2006 · Replies 3 · Nov 21, 2006

Replies: 3

What is the Meaning of "Empty Space"?

ValenceE
Oct 22, 2006 · Replies 5 · Nov 21, 2006

Replies: 5

Undergrad Difference between spatially homogeneous and isotropic?

pivoxa15
Oct 23, 2006 · Replies 4 · Nov 21, 2006

Replies: 4

Graduate Schwarzschild metric, cosmological constant

lalbatros
Oct 30, 2006 · Replies 6 · Nov 21, 2006

Replies: 6

High School Universal Gravitation: Einstein's Warping of Space and Time

Pete81t
Oct 30, 2006 · Replies 7 · Nov 21, 2006

Replies: 7

Graduate Can Spacetime Curvature Exist Independently of Mass?

notknowing
Oct 17, 2006 · Replies 33 · Nov 21, 2006

2

Replies: 33

Graduate The Unruh effect and light beams

notknowing
Nov 7, 2006 · Replies 2 · Nov 21, 2006

Replies: 2

Graduate Stress-energy tensor in curved spacetime

notknowing
Oct 20, 2006 · Replies 23 · Nov 21, 2006

Replies: 23

Graduate Change of speed of light in a gravitational field

notknowing
Nov 19, 2006 · Replies 9 · Nov 21, 2006

Replies: 9

Graduate What Is the Plane Schwarzschild Geometry?

lalbatros
Oct 22, 2006 · Replies 3 · Nov 21, 2006

Replies: 3

Graduate Time dilation and Lorentz-Einstein transformations

bernhard.rothenstein
Nov 16, 2006 · Replies 18 · Nov 20, 2006

Replies: 18

Graduate Nested Event Horizons: Possible in General Relativity?

Loren Booda
Oct 31, 2006 · Replies 18 · Nov 19, 2006

Replies: 18

Graduate Schwarzschild radius of a black hole

MeJennifer
Oct 31, 2006 · Replies 6 · Nov 19, 2006

Replies: 6

Graduate What is the relationship between orbital energy and gravitational waves?

kmarinas86
Nov 19, 2006 · Replies 3 · Nov 19, 2006

Replies: 3

Graduate Can a Photon Orbit a Black Hole?

RobtO
Oct 31, 2006 · Replies 8 · Nov 19, 2006

Replies: 8

Graduate Measurement of distances in the presence of a black hole

notknowing
Nov 3, 2006 · Replies 14 · Nov 19, 2006

Replies: 14

Graduate Finding the inertial frame in the two-body problem in GR

lalbatros
Nov 7, 2006 · Replies 2 · Nov 19, 2006

Replies: 2

Graduate Defining GR with Poisson Bracket

Karlisbad
Nov 11, 2006 · Replies 7 · Nov 19, 2006

Replies: 7

Graduate Comparing Gravitational Accelerations: Newtonian vs. General Relativity

Sheyr
Nov 7, 2006 · Replies 6 · Nov 19, 2006

Replies: 6

Graduate Perihelion drift in SR and in GR

lalbatros
Nov 13, 2006 · Replies 1 · Nov 19, 2006

Replies: 1

Graduate Are horizons fingerprints of General Relativity ? and more questions

lalbatros
Nov 13, 2006 · Replies 5 · Nov 19, 2006

Replies: 5

Graduate How Does the Minkowski Metric Relate to Tensors in General Relativity?

therapeuter
Nov 18, 2006 · Replies 18 · Nov 19, 2006

Replies: 18

Graduate Why do light rays emitted at the event horizon stay there in a black hole?

ChemGuy
Nov 14, 2006 · Replies 6 · Nov 19, 2006

Replies: 6

Graduate Gravitational Waves & Unification: Einstein's Remark?

RAD4921
Nov 18, 2006 · Replies 12 · Nov 19, 2006

Replies: 12

Graduate Gravitomagnetism: 17 Orders of Magnitude Beyond GR Prediction

notknowing
Nov 16, 2006 · Replies 7 · Nov 19, 2006

Replies: 7

Undergrad Unraveling the Mystery of E=mc^2: The Surprising Truth About Light's Energy

Prasanna Suman
Nov 19, 2006 · Replies 3 · Nov 19, 2006

Replies: 3

Undergrad Is E=mc^2 an Exact Equation or an Approximation?

ChemGuy
Nov 14, 2006 · Replies 7 · Nov 19, 2006

Replies: 7

Graduate Charge Invariance: Argument Explained

quasar987
Nov 7, 2006 · Replies 12 · Nov 19, 2006

Replies: 12

Graduate Mechanical experiments testing special relativity?

quantumphilosopher
Nov 18, 2006 · Replies 4 · Nov 19, 2006

Replies: 4

Graduate Is the relativity of simultaneity relative?

quantumphilosopher
Nov 17, 2006 · Replies 7 · Nov 18, 2006

Replies: 7

Graduate Is it possible to derive Lorentz-transforms through geometric methods?

derz
Sep 13, 2005 · Replies 11 · Nov 17, 2006

Replies: 11

Graduate Four-Vector Physics: Exploring Questions

actionintegral
Nov 17, 2006 · Replies 4 · Nov 17, 2006

Replies: 4

Graduate Questions on Spacecraft, Light Mass, Relativity & Quantum Theory

The_Thinker
Nov 16, 2006 · Replies 5 · Nov 17, 2006

Replies: 5

Graduate Relativistic Action: Lorentz Transform to Get Action A

actionintegral
Nov 16, 2006 · Replies 6 · Nov 16, 2006

Replies: 6

Graduate E=mc^2 in Natural Units: Understanding the Meaning of c^2

DaveC426913
Nov 14, 2006 · Replies 6 · Nov 15, 2006

Replies: 6

Graduate Does c-u mean that c composes with u?

bernhard.rothenstein
Nov 13, 2006 · Replies 7 · Nov 15, 2006

Replies: 7

Graduate Why should the covariant derivative of the metric tensor be 0 ?

lalbatros
Nov 15, 2006 · Replies 8 · Nov 15, 2006

Replies: 8

Graduate How to use Einsteins Field Equations ?

notknowing
Nov 10, 2006 · Replies 13 · Nov 14, 2006

Replies: 13

Graduate Length Contraction: Row of Blocks & Rods

daniel_i_l
Nov 11, 2006 · Replies 6 · Nov 14, 2006

Replies: 6

Undergrad Understanding Tensors: A Beginner's Guide to Relativity | New Member Question

resurgance2001
Nov 13, 2006 · Replies 9 · Nov 14, 2006

Replies: 9

Graduate How can I show that G=8pT implies the equivalence principle ?

lalbatros
Nov 9, 2006 · Replies 18 · Nov 14, 2006

Replies: 18

High School Faster than Light Particles: Meuons & Photons

vivekhere
Nov 14, 2006 · Replies 5 · Nov 14, 2006

Replies: 5

Graduate Simultaneity in Special Relativity and lorentz transformation

kevin86
Nov 13, 2006 · Replies 3 · Nov 14, 2006

Replies: 3

Graduate Isolated Horizons: Definition & Use

hellfire
Oct 16, 2006 · Replies 5 · Nov 13, 2006

Replies: 5

Graduate Temporal distortion along train DURING Acceleration

davidong3000
Nov 6, 2006 · Replies 6 · Nov 13, 2006

Replies: 6

Graduate Understanding Pointlike & Local Energy Density

bernhard.rothenstein
Nov 12, 2006 · Replies 5 · Nov 12, 2006

Replies: 5

Graduate Relativity and Faster than the speed of light.

ThinksTooMuch
Nov 6, 2006 · Replies 8 · Nov 12, 2006

Replies: 8

Graduate Reverse time dilation possible?

caston
Nov 10, 2006 · Replies 5 · Nov 12, 2006

Replies: 5

Graduate How does relativity show that energy is proportional to frequency?

lightarrow
Oct 20, 2006 · Replies 20 · Nov 11, 2006

Replies: 20

Graduate Moonrock gravitationally same as earthrock?

ianbell
Nov 10, 2006 · Replies 8 · Nov 11, 2006

Replies: 8

Graduate E = mc2 is not really true in all cases?

jainabhs
Oct 26, 2006 · Replies 9 · Nov 10, 2006

Replies: 9

Graduate A black hole thought experiment

wywong
Nov 7, 2006 · Replies 10 · Nov 9, 2006

Replies: 10

Graduate Light Speed Separation: How Long?

joruz1
Nov 9, 2006 · Replies 1 · Nov 9, 2006

Replies: 1

Graduate Is E = mc^2 the only formula for total energy?

pmb_phy
Nov 7, 2006 · Replies 11 · Nov 9, 2006

Replies: 11

Undergrad Gamma Explained: Reasons for Lorentz Transformation

actionintegral
Nov 9, 2006 · Replies 13 · Nov 9, 2006

Replies: 13

Graduate Newton's Gravity corrected and Pioneer 10 anomaly

tehno
Nov 4, 2006 · Replies 5 · Nov 8, 2006

Replies: 5

Graduate The Mystery of Photon Motion: How Do Photons Perceive One Another?

Bos
Nov 1, 2006 · Replies 15 · Nov 8, 2006

Replies: 15

Graduate Black Hole Questions: Mass Increase & Formation

wywong
Oct 31, 2006 · Replies 23 · Nov 7, 2006

Replies: 23

Graduate Heated discussion about a flaw

lalbatros
Oct 15, 2006 · Replies 11 · Nov 7, 2006

Replies: 11

Graduate Temporal distortion of a moving train

davidong3000
Nov 5, 2006 · Replies 27 · Nov 7, 2006

Replies: 27

Graduate Why was Lorentz transformation known before Einstein explained clock synchronisation

lalbatros
Nov 5, 2006 · Replies 10 · Nov 7, 2006

Replies: 10

Graduate Topology of Spacetime: Non-Compactness Not Required?

shoehorn
Nov 6, 2006 · Replies 2 · Nov 6, 2006

Replies: 2

Graduate Solving the Submarine Problem: Will it Rise or Sink?

raul_l
Nov 5, 2006 · Replies 2 · Nov 6, 2006

Replies: 2

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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