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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.

Prefix: Undergrad

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Undergrad Help With Dilation: Get Answers Here

Apr 21, 2004 · Replies 11 · Jun 22, 2004

Replies: 11

Views: 3K

Undergrad Two Questions about Black Holes and Laws of Physics

Jun 17, 2004 · Replies 4 · Jun 18, 2004

Replies: 4

Views: 3K

Undergrad What is stress-energy and how does it differ from other forms of energy?

May 18, 2004 · Replies 20 · Jun 9, 2004

Replies: 20

Views: 5K

Undergrad What Did Einstein Imagine When Riding on a Beam of Light?

May 17, 2004 · Replies 9 · Jun 5, 2004

Replies: 9

Views: 9K

Undergrad Can Slowing Down Light Unlock the Secrets of Time Travel?

Mar 24, 2004 · Replies 12 · May 30, 2004

Replies: 12

Views: 4K

Undergrad Can a Strong Cable Connect Planets Faster Than the Speed of Light?

May 27, 2004 · Replies 7 · May 28, 2004

Replies: 7

Views: 6K

Undergrad A MACHO is passing the solar system at the velocity of .5c.

May 26, 2004 · Replies 8 · May 27, 2004

Replies: 8

Views: 2K

Undergrad Is it possible to time travel according to Einstein's theory?

May 24, 2004 · Replies 2 · May 24, 2004

Replies: 2

Views: 2K

Undergrad Real Time Travel: Dr. Mallet & His Time Machine

Apr 29, 2004 · Replies 30 · May 12, 2004

2

Replies: 30

Views: 5K

Undergrad Questioning Time Travel: Can We? Should We?

Apr 30, 2004 · Replies 10 · May 1, 2004

Replies: 10

Views: 3K

Undergrad A computer teacher on a physics roll here?

May 1, 2004 · Replies 1 · May 1, 2004

Replies: 1

Views: 2K

Undergrad How Does Mass Distort Spacetime?

Apr 22, 2004 · Replies 4 · Apr 27, 2004

Replies: 4

Views: 3K

Undergrad Is Mass Truly Just Energy in Different Forms?

Apr 17, 2004 · Replies 14 · Apr 27, 2004

Replies: 14

Views: 4K

Undergrad SR Misunderstanding: Mass from E=mc^2?

Apr 26, 2004 · Replies 7 · Apr 27, 2004

Replies: 7

Views: 3K

Undergrad Relative Direction: Proving Einstein's Theory with Clocks

Apr 24, 2004 · Replies 6 · Apr 25, 2004

Replies: 6

Views: 3K

Undergrad Why Do People Believe in Einstein Theory Over Push/Radiation Theory?”

Apr 24, 2004 · Replies 12 · Apr 25, 2004

Replies: 12

Views: 3K

Undergrad Doesn't light's constant speed dictate an 'ether'?

Mar 26, 2004 · Replies 105 · Apr 19, 2004

4

Replies: 105

Views: 14K

Undergrad The Pugilistic Albert - Round 1

Apr 12, 2004 · Replies 4 · Apr 13, 2004

Replies: 4

Views: 2K

Undergrad What Are the Best Resources for Understanding Einstein's Relativity?

Apr 10, 2004 · Replies 2 · Apr 12, 2004

Replies: 2

Views: 2K

Undergrad How can mass equation rely on 'rest mass'?

Apr 11, 2004 · Replies 6 · Apr 12, 2004

Replies: 6

Views: 3K

Undergrad Relativistic Mass Propulsion or the RMP

Mar 26, 2004 · Replies 8 · Apr 11, 2004

Replies: 8

Views: 3K

Undergrad Traveling at Light Speed: Our Earth's Movement Through Time

Apr 5, 2004 · Replies 5 · Apr 7, 2004

Replies: 5

Views: 4K

Undergrad Satellite to test Einstein's predictions

Apr 3, 2004 · Replies 2 · Apr 5, 2004

Replies: 2

Views: 2K

Undergrad Light in the wake of huge objects

Mar 24, 2004 · Replies 2 · Apr 2, 2004

Replies: 2

Views: 2K

Undergrad Why is c even in the equation?

Mar 21, 2004 · Replies 4 · Mar 24, 2004

Replies: 4

Views: 15K

Undergrad Centrifugal Force: Facts & Equations

Mar 20, 2004 · Replies 4 · Mar 24, 2004

Replies: 4

Views: 6K

Undergrad What exactly are Lorentz transformations?

Mar 20, 2004 · Replies 8 · Mar 20, 2004

Replies: 8

Views: 4K

Undergrad Can Gravity and Acceleration Ever Equal the Speed of Light?

Mar 15, 2004 · Replies 4 · Mar 17, 2004

Replies: 4

Views: 2K

Undergrad Q: Questions About Stephen Hawking, Einstein & Gravity

Mar 15, 2004 · Replies 2 · Mar 16, 2004

Replies: 2

Views: 10K

Undergrad Lenght contraction experiments.

Mar 9, 2004 · Replies 16 · Mar 11, 2004

Replies: 16

Views: 5K

Undergrad If there is no Ether how can we talk about light being a wave?

Mar 5, 2004 · Replies 132 · Mar 9, 2004

5

Replies: 132

Views: 16K

Undergrad Speed of light-can this be correct?

Mar 7, 2004 · Replies 5 · Mar 8, 2004

Replies: 5

Views: 3K

Undergrad The Mystery of Light: FTL Travel

Jan 31, 2004 · Replies 49 · Mar 4, 2004

2

Replies: 49

Views: 8K

Undergrad Time & Speed: Questions from a Non-Physics Student

Feb 13, 2004 · Replies 15 · Mar 2, 2004

Replies: 15

Views: 4K

Undergrad Explore Ideas: Learning & Discussing Space Probes & Gravity

Mar 2, 2004 · Replies 2 · Mar 2, 2004

Replies: 2

Views: 3K

Undergrad Does the speed of light affect the aberration of starlight?

Feb 19, 2004 · Replies 51 · Mar 2, 2004

2

Replies: 51

Views: 11K

Undergrad Solving Time Dilation Question from Simply Einstein

Feb 16, 2004 · Replies 7 · Feb 17, 2004

Replies: 7

Views: 3K

Undergrad Question about Special Relativity

Feb 15, 2004 · Replies 4 · Feb 16, 2004

Replies: 4

Views: 3K

Undergrad Is Time a Proven Fact or Still Just a Theory?

Feb 10, 2004 · Replies 22 · Feb 15, 2004

Replies: 22

Views: 4K

Undergrad What are the implications of time being relative?

Feb 13, 2004 · Replies 3 · Feb 13, 2004

Replies: 3

Views: 3K

Undergrad Expanding people in an expanding universe?

Jan 17, 2004 · Replies 36 · Feb 6, 2004

2

Replies: 36

Views: 16K

Undergrad Einstein's Modified Newton's Equation of Motion

Jan 29, 2004 · Replies 17 · Feb 5, 2004

Replies: 17

Views: 6K

Undergrad What if the speed of light was slower?

Dec 28, 2003 · Replies 21 · Feb 3, 2004

Replies: 21

Views: 25K

Undergrad I admit, I only had wrong impression

Jan 21, 2004 · Replies 2 · Jan 28, 2004

Replies: 2

Views: 3K

Undergrad Gravity and the Speed of Gravitational Influence

Jan 25, 2004 · Replies 12 · Jan 26, 2004

Replies: 12

Views: 3K

Undergrad What Is Relativistic Kinematics?

Jan 18, 2004 · Replies 2 · Jan 26, 2004

Replies: 2

Views: 5K

Undergrad E=MC2: does this prevent a Mass from achieving Light Speed?

Jan 11, 2004 · Replies 16 · Jan 13, 2004

Replies: 16

Views: 7K

Undergrad How Fast Do Mechanical Forces Travel Through Different Mediums?

Jan 1, 2004 · Replies 3 · Jan 7, 2004

Replies: 3

Views: 3K

Undergrad QM or Relativity first for self learners?

Jan 6, 2004 · Replies 3 · Jan 7, 2004

Replies: 3

Views: 3K

Undergrad What Happens If a Time Traveler Dies in the Past?

Dec 27, 2003 · Replies 1 · Dec 31, 2003

Replies: 1

Views: 4K

Undergrad Can Timelines Intersect or Travel in Different Directions?

Dec 30, 2003 · Replies 2 · Dec 31, 2003

Replies: 2

Views: 3K

Undergrad Particles having nonzero rest mass can approach the speed of light

Dec 16, 2003 · Replies 4 · Dec 16, 2003

Replies: 4

Views: 3K

Undergrad How do we measure velocity at the first place?

Dec 9, 2003 · Replies 2 · Dec 16, 2003

Replies: 2

Views: 2K

Undergrad What is the significance of aether in science, philosophy, and astronomy?

Dec 5, 2003 · Replies 2 · Dec 12, 2003

Replies: 2

Views: 3K

Undergrad Is a photonic-boom possible?

Dec 8, 2003 · Replies 4 · Dec 8, 2003

Replies: 4

Views: 17K

Undergrad Special Relativity: Light's Relative Speed Explained

Dec 6, 2003 · Replies 8 · Dec 8, 2003

Replies: 8

Views: 3K

Undergrad Accelerating in Space vs Standing in Gravity Well

Nov 29, 2003 · Replies 23 · Dec 6, 2003

Replies: 23

Views: 6K

Undergrad Scientific american article about the nature of gravity.

Nov 26, 2003 · Replies 29 · Dec 3, 2003

Replies: 29

Views: 7K

Undergrad Gravity and time, am I understanding this?

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

Replies: 2

Views: 3K

Undergrad Solving Relativity Paradox & Problems in Physics

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

Replies: 7

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

Undergrad Speed of Laser on Spaceship Traveling at 0.5c?

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

Replies: 3

Views: 3K

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

Undergrad Does Faster Speed Increase Mass?

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

Replies: 11

Views: 4K

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

Undergrad Can anyone explain the theory of relativity to me

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

Replies: 3

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

Undergrad How Is Age Calculated in the Twin Paradox?

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

Replies: 3

Views: 3K

Undergrad Time Dilation: Seeing the Effects from Different Perspectives

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

Replies: 17

Views: 5K

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

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

Replies: 2

Views: 3K

Undergrad Can Anyone Ever Surpass a 100m Sprint Time of 0.000000334 Seconds?

Jun 30, 2003 · Replies 16 · Jul 2, 2003

Replies: 16

Views: 18K

Undergrad How do the effects of relativity cancel out in the twin paradox?

Jun 30, 2003 · Replies 6 · Jun 30, 2003

Replies: 6

Views: 3K

Undergrad Question about Cg and the Speed of Gravity in Newton's Theory

Jun 28, 2003 · Replies 1 · Jun 28, 2003

Replies: 1

Views: 2K

Undergrad Does Relativistic Mass Increase with Speed?

Jun 3, 2003 · Replies 32 · Jun 14, 2003

2

Replies: 32

Views: 8K

Undergrad Are phottons effected by gravity?

Jun 9, 2003 · Replies 5 · Jun 10, 2003

Replies: 5

Views: 6K

Undergrad Understanding Time Dilation: Help for Middle Schoolers

May 23, 2003 · Replies 7 · May 24, 2003

Replies: 7

Views: 3K

Undergrad Time Dilation Explained: Theory & How It Works

Apr 15, 2003 · Replies 52 · Apr 29, 2003

2

Replies: 52

Views: 10K

Undergrad Converting Kinetic Energy: Solving for Mass in E=mc2 Equation

Apr 18, 2003 · Replies 12 · Apr 21, 2003

Replies: 12

Views: 7K

Undergrad How does time dilation in relativity work?

Apr 18, 2003 · Replies 4 · Apr 18, 2003

Replies: 4

Views: 4K

Undergrad I am heavy or having more mass ? E=mc^2

Apr 14, 2003 · Replies 18 · Apr 16, 2003

Replies: 18

Views: 4K

Undergrad Understanding the Compatibility of Relativity and Quantum Theories

Apr 11, 2003 · Replies 4 · Apr 12, 2003

Replies: 4

Views: 3K

Undergrad Relativity and the Constant Velocity of Light

Mar 25, 2003 · Replies 2 · Mar 25, 2003

Replies: 2

Views: 4K

Undergrad Question about two-clock experiment

Mar 19, 2003 · Replies 9 · Mar 23, 2003

Replies: 9

Views: 6K

Undergrad Why Is Gravitational Energy Considered Negative?

Mar 20, 2003 · Replies 6 · Mar 20, 2003

Replies: 6

Views: 18K

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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