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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 Time-Indep General Relativity: Can Someone Help Understand Equation (10)?

Nov 30, 2013 · Replies 1 · Nov 30, 2013

Replies: 1

Views: 2K

Graduate E/M Constant: Mass Conversion in Universe

Nov 29, 2013 · Replies 5 · Nov 29, 2013

Replies: 5

Views: 2K

Graduate General relativity and invariant mass

Nov 17, 2013 · Replies 18 · Nov 28, 2013

Replies: 18

Views: 5K

Graduate Why the curvature of spacetime is related to momentum?

Nov 28, 2013 · Replies 4 · Nov 28, 2013

Replies: 4

Views: 2K

Graduate Problem caused by length contraction and relativity and personal expla

Nov 22, 2013 · Replies 9 · Nov 28, 2013

Replies: 9

Views: 2K

Graduate Is SR really internally consistent?

Oct 1, 2013 · Replies 55 · Nov 28, 2013

2

Replies: 55

Views: 8K

Graduate Does the curvature of spacetime have a unit?

Nov 27, 2013 · Replies 10 · Nov 28, 2013

Replies: 10

Views: 4K

Graduate Clocks inside a cavity inside a collapsing dust shell

Nov 27, 2013 · Replies 14 · Nov 27, 2013

Replies: 14

Views: 2K

Graduate Einstein's Mass-Energy Relation

Nov 27, 2013 · Replies 5 · Nov 27, 2013

Replies: 5

Views: 2K

Graduate Lorentz Transformation and Time Dilation

Nov 27, 2013 · Replies 3 · Nov 27, 2013

Replies: 3

Views: 2K

Graduate SPECIAL relativity's effect on gravity

Nov 26, 2013 · Replies 10 · Nov 27, 2013

Replies: 10

Views: 3K

Graduate Negative Velocities in Lorentz Transformations

Nov 27, 2013 · Replies 4 · Nov 27, 2013

Replies: 4

Views: 5K

Graduate Explain Where My Argument (MTW Ex 4.10) is Going Wrong - TerryW

Nov 27, 2013 · Replies 1 · Nov 27, 2013

Replies: 1

Views: 2K

Graduate Can information escape a blackhole?

Nov 26, 2013 · Replies 14 · Nov 27, 2013

Replies: 14

Views: 2K

Graduate Combining gravitational time dilation components.

Nov 22, 2013 · Replies 19 · Nov 27, 2013

Replies: 19

Views: 3K

Graduate Thought Experiment: The flow of time at different parts of the univers

Nov 26, 2013 · Replies 11 · Nov 27, 2013

Replies: 11

Views: 2K

Graduate QUESTION: Relativistic Doppler Effect & Special Relativity

Nov 26, 2013 · Replies 9 · Nov 26, 2013

Replies: 9

Views: 3K

Graduate Do Black Holes Outlive Everything Else in the Universe?

Nov 26, 2013 · Replies 2 · Nov 26, 2013

Replies: 2

Views: 2K

Graduate Bending of Light: General Relativity Explained

Nov 26, 2013 · Replies 8 · Nov 26, 2013

Replies: 8

Views: 2K

Undergrad Basic Findings of Special & General Relativity

Nov 26, 2013 · Replies 1 · Nov 26, 2013

Replies: 1

Views: 2K

Undergrad C FOR Loop Paradox: Unraveling the Mystery

Nov 25, 2013 · Replies 11 · Nov 25, 2013

Replies: 11

Views: 2K

Graduate Calculating gravity with high precision ?

Nov 24, 2013 · Replies 20 · Nov 25, 2013

Replies: 20

Views: 3K

Graduate Do length contraction affects accelerating objects?

Nov 24, 2013 · Replies 8 · Nov 25, 2013

Replies: 8

Views: 2K

Graduate The aging effect with regard to high speed travel

Nov 24, 2013 · Replies 17 · Nov 25, 2013

Replies: 17

Views: 3K

Undergrad The Lance Duel Paradox: Who Will Win?

Nov 23, 2013 · Replies 34 · Nov 24, 2013

2

Replies: 34

Views: 4K

Graduate Black Hole & Wormhole: Questions Answered

Nov 11, 2013 · Replies 2 · Nov 24, 2013

Replies: 2

Views: 2K

High School Gravity: Not Proportional to Inverse Square?

Nov 23, 2013 · Replies 1 · Nov 23, 2013

Replies: 1

Views: 2K

Graduate Following a light ray through a curved spacetime.

Nov 20, 2013 · Replies 28 · Nov 23, 2013

Replies: 28

Views: 4K

Graduate Ehrenfest paradox debate, how does a pinning disk look like?

Nov 23, 2013 · Replies 1 · Nov 23, 2013

Replies: 1

Views: 2K

Graduate What Happens to a Pole Spinning Near Light Speed?

Nov 22, 2013 · Replies 4 · Nov 22, 2013

Replies: 4

Views: 2K

Undergrad Does Light Speed Up Near Black Holes?

Nov 22, 2013 · Replies 10 · Nov 22, 2013

Replies: 10

Views: 3K

Graduate Intuition behind the warp drive

Nov 19, 2013 · Replies 4 · Nov 22, 2013

Replies: 4

Views: 2K

Undergrad What is the simplest way to explain general and/or special relativity?

Nov 21, 2013 · Replies 24 · Nov 22, 2013

Replies: 24

Views: 5K

Graduate Is time and space moving through us? Do black holes rotation create time?

May 17, 2011 · Replies 11 · Nov 21, 2013

Replies: 11

Views: 8K

Graduate Similar to the Einstein train experiment

Nov 16, 2013 · Replies 48 · Nov 20, 2013

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Replies: 48

Views: 6K

Graduate Special relativity and quantum mech

Nov 19, 2013 · Replies 3 · Nov 20, 2013

Replies: 3

Views: 2K

Graduate Space-Time: Does Faster Mass Increase Curvature?

Nov 19, 2013 · Replies 9 · Nov 19, 2013

Replies: 9

Views: 2K

Graduate What is the proof/validity of Born rigidity in Special relativity?

Nov 19, 2013 · Replies 52 · Nov 19, 2013

2

Replies: 52

Views: 6K

Undergrad How we know which mass would be heavier.

Nov 16, 2013 · Replies 6 · Nov 19, 2013

Replies: 6

Views: 2K

Graduate What Are the True Nature and Meaning of Extra Dimensions?

Nov 19, 2013 · Replies 2 · Nov 19, 2013

Replies: 2

Views: 2K

Graduate Is ADM Energy Equivalent to Komar Mass in All Spacetimes?

Nov 18, 2013 · Replies 3 · Nov 18, 2013

Replies: 3

Views: 3K

Graduate What will show scale inside rocket?

Nov 18, 2013 · Replies 3 · Nov 18, 2013

Replies: 3

Views: 2K

Graduate Relativity and terminal velocity

Nov 18, 2013 · Replies 5 · Nov 18, 2013

Replies: 5

Views: 2K

Graduate Intuition of Geodesics: Visualizing Tangent & Parallel Transported Vectors

Nov 17, 2013 · Replies 11 · Nov 18, 2013

Replies: 11

Views: 3K

Graduate Quastions about Zee's book EGR in a nutshell

Nov 16, 2013 · Replies 12 · Nov 17, 2013

Replies: 12

Views: 3K

Undergrad Is the Speed of Light Truly Constant in Deep Space?

Nov 16, 2013 · Replies 1 · Nov 16, 2013

Replies: 1

Views: 2K

Graduate Special Relativity: Time Intervals & Colocated Origins

Nov 15, 2013 · Replies 8 · Nov 16, 2013

Replies: 8

Views: 3K

Graduate Elementary Explanation of Unruh Effect

Oct 17, 2013 · Replies 8 · Nov 16, 2013

Replies: 8

Views: 4K

Graduate Gravity distortion at the center of a massive object?

Nov 14, 2013 · Replies 33 · Nov 16, 2013

2

Replies: 33

Views: 6K

Graduate General relativity - Conceptual question

Nov 14, 2013 · Replies 6 · Nov 16, 2013

Replies: 6

Views: 2K

Graduate Spacetime/Proper Length

Nov 4, 2013 · Replies 14 · Nov 15, 2013

Replies: 14

Views: 5K

Undergrad GRT: Can Identical Objects Orbit Center of Gravity?

Nov 13, 2013 · Replies 6 · Nov 15, 2013

Replies: 6

Views: 2K

Graduate Understanding the Twin Paradox: Time Dilation in Relativity

Nov 15, 2013 · Replies 11 · Nov 15, 2013

Replies: 11

Views: 2K

Graduate Does the cosmological constant 'require' energy?

Nov 13, 2013 · Replies 7 · Nov 15, 2013

Replies: 7

Views: 2K

Undergrad Einstein's train thought experiment

Nov 15, 2013 · Replies 5 · Nov 15, 2013

Replies: 5

Views: 2K

Graduate GR Effects on Satellites in Free Fall: Resolving the Confusion

Nov 12, 2013 · Replies 32 · Nov 14, 2013

2

Replies: 32

Views: 6K

Graduate Units of spacetime in Minkowski metric

Oct 14, 2013 · Replies 54 · Nov 14, 2013

2

Replies: 54

Views: 26K

Graduate Understanding Spacetime Diagrams & Relativity

Nov 1, 2013 · Replies 20 · Nov 13, 2013

Replies: 20

Views: 6K

Graduate Understanding Doppler Shift for Light in Special Relativity

Nov 12, 2013 · Replies 3 · Nov 12, 2013

Replies: 3

Views: 2K

Graduate What is the problem with the Minkowski relationship in special relativity?

Nov 12, 2013 · Replies 4 · Nov 12, 2013

Replies: 4

Views: 2K

Graduate How is it that black holes can have angular momentum?

Nov 11, 2013 · Replies 6 · Nov 12, 2013

Replies: 6

Views: 2K

Undergrad Correct definition of time dilation

Nov 9, 2013 · Replies 21 · Nov 11, 2013

Replies: 21

Views: 5K

Graduate How Does Time Differ for Observers in Relative Motion?

Sep 30, 2013 · Replies 31 · Nov 11, 2013

2

Replies: 31

Views: 5K

Graduate [Question] About the radio signal for Twin Paradox

Nov 9, 2013 · Replies 3 · Nov 10, 2013

Replies: 3

Views: 2K

Graduate Can the concept of negative mass shed light on the independence of momentum?

Nov 9, 2013 · Replies 12 · Nov 10, 2013

Replies: 12

Views: 2K

Undergrad SR Problem: Calculating Angle of Tilt of Moving Bar

Nov 9, 2013 · Replies 6 · Nov 10, 2013

Replies: 6

Views: 3K

Graduate Simultaneity between events in reference frames

Nov 9, 2013 · Replies 2 · Nov 10, 2013

Replies: 2

Views: 3K

Graduate Understanding the Effect of Space Curvature on Time in Relativity

Nov 7, 2013 · Replies 15 · Nov 9, 2013

Replies: 15

Views: 4K

Can anybody suggest any books, journals, or webs on antigravity?

Nov 9, 2013 · Replies 15 · Nov 9, 2013

Replies: 15

Views: 2K

Undergrad Changing magnetic field creates potential difference

Nov 8, 2013 · Replies 1 · Nov 8, 2013

Replies: 1

Views: 2K

Graduate What caused us to have relative time

Nov 4, 2013 · Replies 62 · Nov 8, 2013

3

Replies: 62

Views: 7K

Graduate CTCs in Kerr Metric: Examining the Invariance of CTCs in Spacetime

Nov 7, 2013 · Replies 6 · Nov 8, 2013

Replies: 6

Views: 3K

Graduate Mechanism by which mass curves space

Nov 1, 2013 · Replies 9 · Nov 8, 2013

Replies: 9

Views: 4K

Graduate Concept of coordinate reference frame in GR

Nov 7, 2013 · Replies 7 · Nov 7, 2013

Replies: 7

Views: 3K

Graduate Could a warp drive work as a time machine?

Nov 2, 2013 · Replies 51 · Nov 7, 2013

2

Replies: 51

Views: 19K

Graduate Gravitons: Explaining Need & Function in Relation to GR

Nov 6, 2013 · Replies 4 · Nov 7, 2013

Replies: 4

Views: 2K

Graduate Locally non-rotating observers

Jul 21, 2013 · Replies 178 · Nov 6, 2013

6

Replies: 178

Views: 27K

Graduate Negative time difference of simultaneous events?

Oct 9, 2013 · Replies 12 · Nov 5, 2013

Replies: 12

Views: 5K

Graduate Time Travelling at Speed of Light: What is My Time?

Nov 3, 2013 · Replies 5 · Nov 5, 2013

Replies: 5

Views: 2K

Graduate Understanding Time Dilation: Proper Time vs. Time

Nov 5, 2013 · Replies 5 · Nov 5, 2013

Replies: 5

Views: 3K

Graduate Magnetism as a Relativistic Phenomenon

Nov 5, 2013 · Replies 1 · Nov 5, 2013

Replies: 1

Views: 3K

Undergrad Newton's law of gravity or Einstein's general theory of relativity?

Nov 4, 2013 · Replies 29 · Nov 4, 2013

Replies: 29

Views: 7K

High School Einstein and his theory of light speed

Nov 3, 2013 · Replies 6 · Nov 3, 2013

Replies: 6

Views: 2K

Graduate Why Does a Bullet Fall Below a Laser Beam in General Relativity?

Nov 3, 2013 · Replies 6 · Nov 3, 2013

Replies: 6

Views: 3K

Graduate Light & Space-Time: Why So Fast?

Aug 28, 2013 · Replies 18 · Nov 3, 2013

Replies: 18

Views: 4K

Graduate Constant Acceleration / Deceleration Propulsion

Nov 2, 2013 · Replies 7 · Nov 3, 2013

Replies: 7

Views: 4K

Graduate What does vanishing Ricci tensor signify ?

Nov 3, 2013 · Replies 1 · Nov 3, 2013

Replies: 1

Views: 2K

Graduate Could There be a Preferred Time in the Universe?

Nov 3, 2013 · Replies 1 · Nov 3, 2013

Replies: 1

Views: 2K

Graduate Unbreakable pole moved in an infinite vacuum

Nov 2, 2013 · Replies 1 · Nov 2, 2013

Replies: 1

Views: 2K

High School Does Gravity Affect How Long You Live?

Nov 2, 2013 · Replies 1 · Nov 2, 2013

Replies: 1

Views: 2K

Graduate Einstein's Basis for Equivalence in his Field Equations

Nov 2, 2013 · Replies 3 · Nov 2, 2013

Replies: 3

Views: 2K

Graduate Question regarding the qualitative difference between General Relativi

Nov 2, 2013 · Replies 4 · Nov 2, 2013

Replies: 4

Views: 2K

Undergrad Moving faster than light cannot stop biological aging Or can?

Nov 1, 2013 · Replies 20 · Nov 2, 2013

Replies: 20

Views: 8K

Graduate How Do You Calculate Average Acceleration in Relativistic Motion?

Oct 30, 2013 · Replies 8 · Nov 2, 2013

Replies: 8

Views: 3K

Graduate Can you see inside a space ship moving at the speed of light?

Nov 1, 2013 · Replies 5 · Nov 1, 2013

Replies: 5

Views: 2K

Graduate Does time go backwards if object is going faster than light?

Nov 1, 2013 · Replies 3 · Nov 1, 2013

Replies: 3

Views: 2K

Graduate What causes people to age differently?

Oct 29, 2013 · Replies 36 · Nov 1, 2013

2

Replies: 36

Views: 6K

Undergrad How to understand gravitational potential

Oct 31, 2013 · Replies 14 · Nov 1, 2013

Replies: 14

Views: 2K

Graduate Proof of CTCs: Post Selection & Entanglement

Oct 29, 2013 · Replies 4 · Nov 1, 2013

Replies: 4

Views: 2K

Graduate Velocity addition formula question

Oct 28, 2013 · Replies 7 · Nov 1, 2013

Replies: 7

Views: 4K

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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