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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 What is the More Accurate Value for G?

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

Replies: 1

Views: 7K

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

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

Replies: 2

Views: 3K

Graduate Do photons effectivley travel instantaneously?

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

Replies: 3

Views: 3K

Graduate FTL Signals and the Paradox of Causality

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

Replies: 3

Views: 3K

Graduate Possible Consequences of Time Travel: A Scientific Perspective

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

Replies: 4

Views: 6K

Graduate Understanding the Ether Test: Scientists' Determination and Implications

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

Replies: 6

Views: 5K

Undergrad Gravity and time, am I understanding this?

Nov 21, 2003 · Replies 2 · Nov 21, 2003

Replies: 2

Views: 3K

Graduate Contradicting Physics Beyond the Standard Model

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

Replies: 26

Views: 6K

Graduate Is Gravity Caused by Non-Linear Time Dilation?

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

2

Replies: 30

Views: 6K

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

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

2

Replies: 57

Views: 12K

Graduate Unraveling the Energy Redshift Paradox in General Relativity | Physics Post

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

Replies: 2

Views: 4K

Graduate Does relativity imply alternate realities?

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

Replies: 4

Views: 4K

Undergrad Solving Relativity Paradox & Problems in Physics

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

Replies: 7

Views: 4K

Graduate New Bekenstein paper on BH and Information

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

Replies: 7

Views: 4K

Graduate Time Travel & Energy: Possible Violation of Conservation Law?

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

Replies: 7

Views: 4K

Graduate Special Relativity and radioactive nucleus

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

Replies: 15

Views: 4K

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

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

Replies: 4

Views: 2K

Undergrad Determining Age of Universe w/ Hubbles Constant

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

Replies: 2

Views: 3K

Graduate Tutorial on the Christoffel equation used in relativity

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

Replies: 2

Views: 6K

Undergrad Speed of Laser on Spaceship Traveling at 0.5c?

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

Replies: 3

Views: 3K

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

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

Replies: 5

Views: 5K

Graduate QM mimics Relativity in an EPR guided symmetrical Universe

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

Replies: 18

Views: 8K

Graduate QG Troubles: Problems Connected with Quantum Gravity

Nov 8, 2003 · Replies 7 · Nov 9, 2003

Replies: 7

Views: 4K

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

Nov 7, 2003 · Replies 3 · Nov 8, 2003

Replies: 3

Views: 4K

Graduate Can anyone explain the relationship between t²-x² in relativity theory?

Nov 7, 2003 · Replies 3 · Nov 8, 2003

Replies: 3

Views: 6K

Undergrad [Help]whatis the relationship between general and special relativity

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

Replies: 17

Views: 5K

Undergrad General Relativity, Gravity, Help

Nov 6, 2003 · Replies 4 · Nov 7, 2003

Replies: 4

Views: 4K

Graduate Contraviant and covariant tensor

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

Replies: 10

Views: 5K

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

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

Replies: 12

Views: 6K

Undergrad Does Faster Speed Increase Mass?

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

Replies: 11

Views: 4K

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

Nov 2, 2003 · Replies 6 · Nov 4, 2003

Replies: 6

Views: 18K

High School Formula for gravitational energy

Nov 3, 2003 · Replies 4 · Nov 4, 2003

Replies: 4

Views: 4K

Graduate General relativity and quantam - what would happen?

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

Replies: 1

Views: 3K

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

Nov 4, 2003 · Replies 1 · Nov 4, 2003

Replies: 1

Views: 4K

Graduate Black Hole Gravitation: Unravelling Its Mystery

Nov 4, 2003 · Replies 2 · Nov 4, 2003

Replies: 2

Views: 5K

Graduate What Causes Black Holes to Form?

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

Replies: 20

Views: 7K

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

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

Replies: 8

Views: 3K

Graduate The Unexistence of Singularity Inside the Event Horizon

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

Replies: 12

Views: 6K

Graduate What Are the Real Implications of Time Travel?

Oct 21, 2003 · Replies 10 · Oct 30, 2003

Replies: 10

Views: 4K

Graduate What affect would antigravity have on time?

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

Replies: 4

Views: 8K

Graduate Expansion slows down and then speeds up

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

Replies: 3

Views: 5K

Graduate Just what we need, a finite dodecahedral universe

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

Replies: 6

Views: 6K

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

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

Replies: 7

Views: 3K

Undergrad The Mystery of Gravity: The Relationship Between Energy and Gravity

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

Replies: 3

Views: 2K

Undergrad Does Laser Light Bend Near Large Masses Like Starlight?

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

Replies: 6

Views: 13K

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

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

Replies: 8

Views: 7K

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

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

Replies: 3

Views: 3K

Graduate Is this online text a good resource for learning differential geometry and general relativity?

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

Replies: 2

Views: 5K

Graduate New speculation about cause of dark energy

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

Replies: 2

Views: 6K

Graduate How Does a Relativity Reference Frame Impact Quantum Measurements?

Oct 10, 2003 · Replies 2 · Oct 18, 2003

Replies: 2

Views: 4K

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

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

Replies: 7

Views: 6K

Graduate Creational Theory - The Mystery of "Nothing

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

2

Replies: 30

Views: 10K

Graduate Conservation of linear momentum at relativistic speeds

Oct 5, 2003 · Replies 2 · Oct 14, 2003

Replies: 2

Views: 7K

Graduate Do Hotdogs Shrink When Traveling Near Light Speed?

Oct 12, 2003 · Replies 17 · Oct 14, 2003

Replies: 17

Views: 5K

Graduate What is the relationship between gravity and time?

Oct 12, 2003 · Replies 1 · Oct 14, 2003

Replies: 1

Views: 2K

Graduate Is Time the 4th Dimension in Physics?

Jul 4, 2003 · Replies 43 · Oct 14, 2003

2

Replies: 43

Views: 7K

Undergrad Can anyone explain the theory of relativity to me

Oct 13, 2003 · Replies 3 · Oct 13, 2003

Replies: 3

Views: 3K

Graduate Do Time Paradoxes Prove the Impossibility of Time Travel?

Oct 8, 2003 · Replies 11 · Oct 11, 2003

Replies: 11

Views: 7K

Graduate How General R disobeys the (Special R) speed limit

Sep 18, 2003 · Replies 18 · Oct 9, 2003

Replies: 18

Views: 7K

Graduate The transference of potential energy to kenetic energy and it's effect on momentum

Oct 8, 2003 · Replies 2 · Oct 8, 2003

Replies: 2

Views: 11K

High School The sun attractive to the earth and holds us in orbit.

Oct 5, 2003 · Replies 4 · Oct 6, 2003

Replies: 4

Views: 6K

Graduate Quantizing GR to Fix Big Bang Singularity: Research Roundup

Sep 19, 2003 · Replies 12 · Oct 5, 2003

Replies: 12

Views: 6K

Graduate Gravity Warps Matter: Effects on Object Shape?

Sep 26, 2003 · Replies 13 · Oct 5, 2003

Replies: 13

Views: 7K

Graduate New test of GR - verified to 1:20,000

Oct 3, 2003 · Replies 6 · Oct 4, 2003

Replies: 6

Views: 6K

Graduate Lambda interacts with gravity to give expantion

Oct 2, 2003 · Replies 5 · Oct 3, 2003

Replies: 5

Views: 6K

High School What Does the Cover of Slice of Pie's Album Reveal About Relativity?

Sep 30, 2003 · Replies 3 · Oct 2, 2003

Replies: 3

Views: 6K

Graduate Understanding Black Holes: Gravity, Light, and the Mystery of Spinning Bodies

Sep 23, 2003 · Replies 22 · Sep 30, 2003

Replies: 22

Views: 8K

Graduate Using gravity to explain gravity

Sep 12, 2003 · Replies 30 · Sep 29, 2003

2

Replies: 30

Views: 7K

Graduate Was Einstein's Original Formula for Transverse Mass Incorrect?

Sep 8, 2003 · Replies 35 · Sep 22, 2003

2

Replies: 35

Views: 7K

Graduate New Bojowald paper-BB non-singularity continued

Sep 18, 2003 · Replies 3 · Sep 18, 2003

Replies: 3

Views: 6K

Graduate Planck units in his quantum foam theory

Sep 17, 2003 · Replies 3 · Sep 18, 2003

Replies: 3

Views: 5K

Graduate Let's see how the new board works GR-wise

Sep 17, 2003 · Replies 5 · Sep 17, 2003

Replies: 5

Views: 6K

Graduate Is Dark Energy Really Just Negative Pressure?

Sep 17, 2003 · Replies 3 · Sep 17, 2003

Replies: 3

Views: 7K

Graduate Uncovering the Mystery of Gravitational Waves

Sep 14, 2003 · Replies 15 · Sep 17, 2003

Replies: 15

Views: 4K

Graduate How Does Relativity Affect the Perception of a Falling Body Near a Massive Star?

Sep 3, 2003 · Replies 2 · Sep 11, 2003

Replies: 2

Views: 3K

Graduate A twist on the twin paradox, help me figure this out

Sep 8, 2003 · Replies 10 · Sep 10, 2003

Replies: 10

Views: 4K

Graduate Can Gravity Deviate from 1/r² at Short Distances?

Sep 9, 2003 · Replies 4 · Sep 10, 2003

Replies: 4

Views: 3K

Graduate Does Time Actually Slow Down During High-Speed Travel?

Aug 13, 2003 · Replies 13 · Sep 8, 2003

Replies: 13

Views: 5K

High School Gravity: Effects on Short & Long Distances

Sep 5, 2003 · Replies 3 · Sep 7, 2003

Replies: 3

Views: 3K

Graduate Understanding Cd^2 and Its Relationship to SR in Practice

Sep 3, 2003 · Replies 2 · Sep 5, 2003

Replies: 2

Views: 2K

Graduate Inertial Systems: What we can Say Without More Data

Aug 20, 2003 · Replies 30 · Sep 3, 2003

2

Replies: 30

Views: 5K

Graduate Comparing Time in Different Galaxies: A Dilemma?

Aug 24, 2003 · Replies 38 · Sep 3, 2003

2

Replies: 38

Views: 7K

Graduate How does energy differ from mass?

Jul 21, 2003 · Replies 48 · Aug 22, 2003

2

Replies: 48

Views: 9K

Graduate What Are the True Dimensions of Time?

Jul 27, 2003 · Replies 21 · Aug 20, 2003

Replies: 21

Views: 4K

Graduate Absolute Space and Time in Einstein's General Theory of Relativity

Aug 18, 2003 · Replies 8 · Aug 20, 2003

Replies: 8

Views: 8K

Graduate Does Travelling at Light Speed Turn the Time Cone into a Cube?

Aug 19, 2003 · Replies 1 · Aug 19, 2003

Replies: 1

Views: 3K

Graduate Gravity and Time: A Revolutionary Thought

Aug 17, 2003 · Replies 5 · Aug 19, 2003

Replies: 5

Views: 3K

Undergrad Questioning the Inclusion of Time in the E=mc2 Equation

Aug 18, 2003 · Replies 4 · Aug 19, 2003

Replies: 4

Views: 3K

Graduate Is Peter Lynds a Controversial Figure in the Discussion of Space and Time?

Aug 13, 2003 · Replies 1 · Aug 15, 2003

Replies: 1

Views: 4K

Graduate Speed of Tachyons: Accelerating Toward Shooter

Aug 7, 2003 · Replies 15 · Aug 14, 2003

Replies: 15

Views: 5K

Graduate Is symmetry the key to understanding our relativistic universe?

Aug 12, 2003 · Replies 4 · Aug 14, 2003

Replies: 4

Views: 3K

Undergrad How Is Age Calculated in the Twin Paradox?

Aug 12, 2003 · Replies 3 · Aug 13, 2003

Replies: 3

Views: 3K

Graduate The Implications of Homogeneity and Isotropy

Aug 6, 2003 · Replies 5 · Aug 6, 2003

Replies: 5

Views: 4K

Graduate Is Relativity the Key to Understanding Doppler Shift on a Moving Train?

Jul 31, 2003 · Replies 19 · Aug 5, 2003

Replies: 19

Views: 5K

Graduate Is the Twin Paradox Really Solved by Considering Acceleration?

Aug 4, 2003 · Replies 7 · Aug 5, 2003

Replies: 7

Views: 3K

Graduate Can the Effects of Relativity be Detected in a Simple Wire Experiment?

Aug 4, 2003 · Replies 10 · Aug 4, 2003

Replies: 10

Views: 3K

Undergrad Time Dilation: Seeing the Effects from Different Perspectives

Aug 2, 2003 · Replies 17 · Aug 4, 2003

Replies: 17

Views: 5K

Graduate Are the people encountered in time travel the same as in the present?

Jul 14, 2003 · Replies 4 · Aug 1, 2003

Replies: 4

Views: 3K

Graduate Is Time Truly Relative or Does It Happen Simultaneously?

Jul 28, 2003 · Replies 14 · Jul 30, 2003

Replies: 14

Views: 4K

Undergrad What's the Time? Einstein & Moving Clocks Explained

Jul 26, 2003 · Replies 2 · Jul 28, 2003

Replies: 2

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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