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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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What is the theory of relativity?

Dec 16, 2006 · Replies 30 · Dec 20, 2006

2

Replies: 30

Views: 8K

Can Time Dilation Be Calculated for a Hypothetical Relativistic Trip?

Dec 18, 2006 · Replies 8 · Dec 20, 2006

Replies: 8

Views: 3K

Counting Solutions of Einstein's Equations

Dec 20, 2006 · Replies 0 · Dec 20, 2006

Replies: 0

Views: 3K

Can spacetime with a compact dimension be foliated into spatial hypersurfaces?

Nov 29, 2006 · Replies 6 · Dec 20, 2006

Replies: 6

Views: 4K

Does Mass Affect Time and Space Differently?

Dec 19, 2006 · Replies 15 · Dec 20, 2006

Replies: 15

Views: 4K

I heard from that Stocks, the famous mathematician who I appreciate

Dec 13, 2006 · Replies 6 · Dec 20, 2006

Replies: 6

Views: 4K

Schwarzchild Mass Explained - What is it?

Dec 18, 2006 · Replies 6 · Dec 19, 2006

Replies: 6

Views: 3K

Covariant vs. Contravariant: Understanding the Physical and Historical Basis

Dec 18, 2006 · Replies 6 · Dec 19, 2006

Replies: 6

Views: 9K

Two watches, one thrown in the air.

Dec 18, 2006 · Replies 10 · Dec 19, 2006

Replies: 10

Views: 4K

Where does quantum gravity starts ?

Dec 18, 2006 · Replies 16 · Dec 19, 2006

Replies: 16

Views: 4K

Help Synchronize Clocks: A & B's Perspective

Dec 18, 2006 · Replies 8 · Dec 19, 2006

Replies: 8

Views: 4K

Gravity & Orbit: Does Sun Bend Space-Time?

Dec 16, 2006 · Replies 20 · Dec 18, 2006

Replies: 20

Views: 5K

How Does Relative Motion Affect Perception of Process Speed?

Dec 18, 2006 · Replies 2 · Dec 18, 2006

Replies: 2

Views: 3K

Consider the Incoming Steps of a Rectilinear Path

Dec 17, 2006 · Replies 10 · Dec 18, 2006

Replies: 10

Views: 4K

Solving GR vs Newton: F = -GMm/R^2 for Relativistic Particles

Dec 16, 2006 · Replies 4 · Dec 17, 2006

Replies: 4

Views: 3K

Black holes and time speeding up.

Dec 16, 2006 · Replies 1 · Dec 16, 2006

Replies: 1

Views: 4K

What limits the speed of light to c and how is it quantized?

Dec 16, 2006 · Replies 1 · Dec 16, 2006

Replies: 1

Views: 2K

Do all massless particles travel at the speed of light?

Dec 15, 2006 · Replies 2 · Dec 16, 2006

Replies: 2

Views: 3K

Time Dilation: A Philosophical Debate or Scientific Reality?

Dec 12, 2006 · Replies 69 · Dec 15, 2006

3

Replies: 69

Views: 12K

Does Black Hole Evaporation Result in Visible Emission and Directional Output?

Dec 14, 2006 · Replies 3 · Dec 14, 2006

Replies: 3

Views: 3K

Can space-time homogeneity put limits

Dec 13, 2006 · Replies 2 · Dec 14, 2006

Replies: 2

Views: 2K

Speed of Light: Is There a Force Limiting Ship Mass?

Dec 13, 2006 · Replies 1 · Dec 13, 2006

Replies: 1

Views: 3K

How Does General Relativity Connect Mass and Geometry?

Dec 8, 2006 · Replies 19 · Dec 12, 2006

Replies: 19

Views: 3K

Equivalence Principle: Understand Constant Acceleration & Warped Spacetime

Dec 7, 2006 · Replies 15 · Dec 12, 2006

Replies: 15

Views: 5K

Quantum vs Relativity: What Are the Key Differences Between These Theories?

Sep 15, 2006 · Replies 20 · Dec 12, 2006

Replies: 20

Views: 5K

Symetry, time dilation, twin paradox and all that stuff

Dec 3, 2006 · Replies 32 · Dec 11, 2006

2

Replies: 32

Views: 8K

Gravitational Lensing: Where to See It Through a Telescope

Dec 10, 2006 · Replies 1 · Dec 10, 2006

Replies: 1

Views: 3K

Time dilation within the neighbourhood

Dec 9, 2006 · Replies 2 · Dec 10, 2006

Replies: 2

Views: 2K

Dp/dt in the relativistic domain

Dec 8, 2006 · Replies 2 · Dec 8, 2006

Replies: 2

Views: 2K

Co-ordinate vs. true acceleration

Dec 7, 2006 · Replies 5 · Dec 8, 2006

Replies: 5

Views: 3K

An illustration of a limitation of Wikipedia's utility

Dec 6, 2006 · Replies 10 · Dec 7, 2006

Replies: 10

Views: 5K

Does Traveling at Light Speed Affect Fuel Consumption and Time Dilation?

Dec 7, 2006 · Replies 3 · Dec 7, 2006

Replies: 3

Views: 6K

Does Light Have Mass in Black Hole Physics?

Dec 6, 2006 · Replies 12 · Dec 7, 2006

Replies: 12

Views: 4K

Heisenberg's uncertainty relation not invariant ?

Dec 7, 2006 · Replies 2 · Dec 7, 2006

Replies: 2

Views: 4K

What Will an Observer Measure When Riding on a Moving Electron in a Wire?

Nov 28, 2006 · Replies 40 · Dec 7, 2006

2

Replies: 40

Views: 10K

How does GR not allow for antigravity?

Dec 3, 2006 · Replies 19 · Dec 6, 2006

Replies: 19

Views: 4K

Specific Orbital Energy at Black holes

Dec 5, 2006 · Replies 16 · Dec 6, 2006

Replies: 16

Views: 4K

Light rod (acoustic rod?) what is that?

Dec 4, 2006 · Replies 4 · Dec 6, 2006

Replies: 4

Views: 4K

Transformation to a local inertial Frame

Dec 5, 2006 · Replies 4 · Dec 5, 2006

Replies: 4

Views: 4K

Can Lorentz Transformation Explain Magnetism and the Lorentz Force?

Dec 5, 2006 · Replies 2 · Dec 5, 2006

Replies: 2

Views: 2K

Got wrong from right equations

Dec 4, 2006 · Replies 2 · Dec 5, 2006

Replies: 2

Views: 2K

What is the Minkowski Metric and How Does it Relate to Special Relativity?

Nov 28, 2006 · Replies 87 · Dec 5, 2006

3

Replies: 87

Views: 19K

Schwarzschild Metric Question

Feb 7, 2004 · Replies 15 · Dec 4, 2006

Replies: 15

Views: 5K

Problem with understanding of relative motion.

Dec 4, 2006 · Replies 5 · Dec 4, 2006

Replies: 5

Views: 3K

Black Holes-to-be, Frozen in Time?

Sep 15, 2006 · Replies 23 · Dec 4, 2006

Replies: 23

Views: 9K

Is the Schwarzschild Metric Valid Inside a Black Hole?

Dec 1, 2006 · Replies 3 · Dec 4, 2006

Replies: 3

Views: 4K

Calculating Force due to Gravity - M1 and M2 Mass at Rest or Relativistic?

Dec 1, 2006 · Replies 3 · Dec 4, 2006

Replies: 3

Views: 43K

Synchronized clocks in special relativity

Dec 1, 2006 · Replies 17 · Dec 4, 2006

Replies: 17

Views: 7K

What is the Wave of Death in Spacetime and its implications for the universe?

Oct 12, 2005 · Replies 7 · Dec 4, 2006

Replies: 7

Views: 8K

Block Universe / Godel's Paradox / Free Will

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

Replies: 16

Views: 11K

Confused by Physics? Let's Figure it Out

Dec 2, 2006 · Replies 3 · Dec 2, 2006

Replies: 3

Views: 2K

Understanding the Impact of Angular Velocity on Mass in Rotating Objects

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

2

Replies: 35

Views: 16K

Do Any Spacetimes with 7 to 9 Killing Vectors Exist?

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

Replies: 5

Views: 3K

Schwarzschild Solution: Find Rigorous Inside Body

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

Replies: 7

Views: 4K

Counting solutions to the EFE?

Dec 1, 2006 · Replies 0 · Dec 1, 2006

Replies: 0

Views: 2K

Could someone explain Brans-Dicke theory?

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

Replies: 8

Views: 6K

Absolute Time in GR: Einstein Fans Unite!

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

Replies: 4

Views: 2K

How Do Thermodynamic Quantities Change at Speeds Close to Light?

Dec 1, 2006 · Replies 1 · Dec 1, 2006

Replies: 1

Views: 2K

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

Nov 23, 2006 · Replies 9 · Nov 29, 2006

Replies: 9

Views: 4K

AdS Space Horizon - Black Holes & Research

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

Replies: 1

Views: 4K

Finding a Kerr Metric Using the Einstein Equation

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

Replies: 4

Views: 8K

Rapidly Spinning Mass Effects on GR & SR Gravitational Field

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

Replies: 10

Views: 4K

Basic metric diagonalization questions

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

Replies: 4

Views: 7K

Model of Galactic Black Hole Candidates

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

Replies: 1

Views: 3K

Electric fields of black holes

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

Replies: 3

Views: 4K

Stress-energy tensor of a perfect fluid

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

Replies: 24

Views: 11K

How Does Acceleration Affect the Geodesic Equation in General Relativity?

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

Replies: 1

Views: 2K

A question about Snyder calculation of imploding stars(1939)

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

Replies: 2

Views: 3K

Solutions of the nonlinear Field Equations

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

2

Replies: 38

Views: 9K

Phone Book's Fans: Shocking Claim on Torsion

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

Replies: 2

Views: 2K

How exactly are QM & GR incompatible?

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

Replies: 14

Views: 5K

Mass in Relativity: Explaining How Velocity Does Not Increase Mass

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

Replies: 23

Views: 5K

What does remain constant in relativity?

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

Replies: 10

Views: 3K

Gravitational length contraction

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

Replies: 2

Views: 4K

Localization by the doppler effect

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

Replies: 3

Views: 2K

Schwarzschild Radii and Relativistic Mass

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

Replies: 10

Views: 6K

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

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

Replies: 11

Views: 3K

Inner Workings of Relativity Clocks - Learn More Here!

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

Replies: 4

Views: 2K

Self Gravitating General Solutions to GR

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

Replies: 3

Views: 3K

Can Event Horizons Be Non-Spherical?

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

Replies: 1

Views: 3K

Can gravity waves be focussed?

Sep 22, 2006 · Replies 8 · Nov 22, 2006

Replies: 8

Views: 3K

Gravitational waves everywhere ?

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

Replies: 7

Views: 3K

Gravitational energy : positive or negative ?

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

Replies: 10

Views: 7K

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

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

Replies: 1

Views: 3K

How much is the Schwarzschild geometry a characteristic feature of GR

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

Replies: 19

Views: 4K

Why does the Lorentz transformations form a group?

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

Replies: 6

Views: 8K

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

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

Replies: 3

Views: 5K

What is the Meaning of "Empty Space"?

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

Replies: 5

Views: 4K

Difference between spatially homogeneous and isotropic?

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

Replies: 4

Views: 17K

Schwarzschild metric, cosmological constant

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

Replies: 6

Views: 8K

Universal Gravitation: Einstein's Warping of Space and Time

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

Replies: 7

Views: 3K

Can Spacetime Curvature Exist Independently of Mass?

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

2

Replies: 33

Views: 5K

The Unruh effect and light beams

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

Replies: 2

Views: 3K

Stress-energy tensor in curved spacetime

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

Replies: 23

Views: 8K

Change of speed of light in a gravitational field

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

Replies: 9

Views: 7K

What Is the Plane Schwarzschild Geometry?

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

Replies: 3

Views: 3K

Time dilation and Lorentz-Einstein transformations

Nov 16, 2006 · Replies 18 · Nov 20, 2006

Replies: 18

Views: 4K

Nested Event Horizons: Possible in General Relativity?

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

Replies: 18

Views: 5K

Schwarzschild radius of a black hole

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

Replies: 6

Views: 7K

What is the relationship between orbital energy and gravitational waves?

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

Replies: 3

Views: 3K

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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