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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 Want to learn about special relativity?

May 1, 2012 · Replies 8 · May 1, 2012

Replies: 8

Views: 2K

Undergrad Implications of the Mass-energy equivalence

Apr 28, 2012 · Replies 8 · Apr 29, 2012

Replies: 8

Views: 3K

Undergrad Is true or is it another pseudoscience crap

Apr 25, 2012 · Replies 10 · Apr 27, 2012

Replies: 10

Views: 3K

Undergrad Is acceleration relative or absolute?

Apr 20, 2012 · Replies 26 · Apr 24, 2012

Replies: 26

Views: 7K

Undergrad Gravitational force at midpoint between 2 equal massive bodies

Apr 24, 2012 · Replies 1 · Apr 24, 2012

Replies: 1

Views: 3K

Undergrad Can anyone explain this possible paradox?

Apr 22, 2012 · Replies 11 · Apr 24, 2012

Replies: 11

Views: 4K

Undergrad Comparing Event Occurrence Across PORs

Mar 8, 2012 · Replies 91 · Apr 24, 2012

4

Replies: 91

Views: 13K

Undergrad Confused about seeming recursivity of time dilation between two moving bodies

Apr 23, 2012 · Replies 2 · Apr 24, 2012

Replies: 2

Views: 2K

Undergrad Learning Tensor Basics: Overcoming Difficulties

Apr 22, 2012 · Replies 5 · Apr 23, 2012

Replies: 5

Views: 2K

Undergrad Does the energy of light depend on the observer's reference frame?

Apr 23, 2012 · Replies 3 · Apr 23, 2012

Replies: 3

Views: 3K

Undergrad Has the One-Way Speed of Light Been Measured?

Apr 22, 2012 · Replies 11 · Apr 23, 2012

Replies: 11

Views: 3K

Undergrad How Do You Convert GeV/c to m/s for Particle Velocities?

Apr 19, 2012 · Replies 5 · Apr 21, 2012

Replies: 5

Views: 11K

Undergrad Is there truly an object at rest in the universe?

Apr 19, 2012 · Replies 5 · Apr 20, 2012

Replies: 5

Views: 2K

Undergrad Noob time-space thought problem

Apr 17, 2012 · Replies 2 · Apr 19, 2012

Replies: 2

Views: 2K

Undergrad Newb Question Regarding Special Relativity

Apr 17, 2012 · Replies 12 · Apr 18, 2012

Replies: 12

Views: 2K

Undergrad Question on Mass-energy equivalence

Apr 17, 2012 · Replies 13 · Apr 18, 2012

Replies: 13

Views: 3K

Undergrad The speed of light and time travel

Apr 15, 2012 · Replies 11 · Apr 18, 2012

Replies: 11

Views: 4K

Undergrad Was gravitational length contraction predicted by general theory of relativity ?

Apr 17, 2012 · Replies 2 · Apr 17, 2012

Replies: 2

Views: 2K

Undergrad Fringe shifts - Michelson Morely Experiment

Mar 19, 2012 · Replies 29 · Apr 16, 2012

Replies: 29

Views: 9K

Undergrad Time Distortion and Time Dilation

Apr 16, 2012 · Replies 1 · Apr 16, 2012

Replies: 1

Views: 3K

Undergrad Why is speed of light constent at a given place

Apr 15, 2012 · Replies 5 · Apr 15, 2012

Replies: 5

Views: 2K

Undergrad Spacetime dilation in special relativity

Apr 10, 2012 · Replies 7 · Apr 10, 2012

Replies: 7

Views: 2K

Undergrad Questions about results of time traveling

Apr 10, 2012 · Replies 6 · Apr 10, 2012

Replies: 6

Views: 2K

Undergrad General theory of relativity clearly explained

Apr 3, 2012 · Replies 11 · Apr 6, 2012

Replies: 11

Views: 4K

Undergrad Time Dilation Data Sets: Get Graphs & Experiments Results

Apr 3, 2012 · Replies 2 · Apr 3, 2012

Replies: 2

Views: 2K

Undergrad What is the shape of an electron's circular motion in a magnetic field?

Apr 3, 2012 · Replies 6 · Apr 3, 2012

Replies: 6

Views: 2K

Undergrad Is force of gravity dependent on speed of one of the body?

Mar 29, 2012 · Replies 68 · Apr 3, 2012

3

Replies: 68

Views: 10K

Undergrad Einstein's Theory of Relativity - Is Light Speed Absolute?

Apr 2, 2012 · Replies 2 · Apr 2, 2012

Replies: 2

Views: 2K

Undergrad Can Light Travel Into the Future While We Explore Time Travel?

Dec 14, 2011 · Replies 50 · Mar 31, 2012

2

Replies: 50

Views: 11K

Undergrad How can anyone know photons exist?

Mar 28, 2012 · Replies 8 · Mar 31, 2012

Replies: 8

Views: 4K

Undergrad Speed of Light: Doubts and Confusions

Mar 28, 2012 · Replies 12 · Mar 30, 2012

Replies: 12

Views: 3K

Undergrad Einstein's Train Metaphor: Explained

Mar 16, 2012 · Replies 6 · Mar 30, 2012

Replies: 6

Views: 5K

Undergrad Optics - Reflection of image from a moving mirror

Mar 13, 2012 · Replies 36 · Mar 28, 2012

2

Replies: 36

Views: 8K

Undergrad Relativity Questions: Can Time Change Significantly in Space or Black Holes?

Mar 25, 2012 · Replies 12 · Mar 27, 2012

Replies: 12

Views: 3K

Undergrad Zero Gravity: ISS Orbit & Neil Degrasse Tyson

Mar 25, 2012 · Replies 2 · Mar 25, 2012

Replies: 2

Views: 3K

Undergrad Constant c and not its invariance.

Mar 21, 2012 · Replies 8 · Mar 24, 2012

Replies: 8

Views: 3K

Undergrad Please help me I want special relativity practice problems.

Mar 23, 2012 · Replies 5 · Mar 23, 2012

Replies: 5

Views: 2K

Undergrad Why does c have to be the speed of light

Mar 22, 2012 · Replies 5 · Mar 22, 2012

Replies: 5

Views: 3K

Undergrad Why is C Invariant? FORs Explained

Mar 20, 2012 · Replies 18 · Mar 21, 2012

Replies: 18

Views: 6K

Undergrad Understanding Special Relativity: The Equation E = mc² Explained

Mar 20, 2012 · Replies 3 · Mar 21, 2012

Replies: 3

Views: 2K

Undergrad Time dilation analogy. Please tell me if this is accurate.

Mar 20, 2012 · Replies 2 · Mar 20, 2012

Replies: 2

Views: 3K

Undergrad Rest energy of a sample of pure matter

Mar 16, 2012 · Replies 11 · Mar 18, 2012

Replies: 11

Views: 3K

Undergrad A compressed spring has more mass

Mar 8, 2012 · Replies 26 · Mar 17, 2012

Replies: 26

Views: 31K

Undergrad Why do electrons revolve so fast?

Mar 15, 2012 · Replies 19 · Mar 17, 2012

Replies: 19

Views: 6K

Undergrad Understanding the Concept of Relativity: Unraveling the Confusion

Mar 15, 2012 · Replies 6 · Mar 17, 2012

Replies: 6

Views: 2K

Undergrad Why do you need to measure the speed of light in two directions?

Jan 15, 2012 · Replies 120 · Mar 16, 2012

5

Replies: 120

Views: 20K

Undergrad Idea's for FTL and Space travel

Mar 14, 2012 · Replies 15 · Mar 16, 2012

Replies: 15

Views: 7K

Undergrad Can Photons Really Have Zero Momentum and Energy?

Mar 12, 2012 · Replies 2 · Mar 12, 2012

Replies: 2

Views: 2K

Undergrad Magnitude of a velocity vector with special relativity

Mar 11, 2012 · Replies 1 · Mar 11, 2012

Replies: 1

Views: 2K

Undergrad Atomic clock used in spaceships

Mar 8, 2012 · Replies 9 · Mar 11, 2012

Replies: 9

Views: 3K

Undergrad Time & Mass: Newbie Questions from a Spaceship Observer

Mar 9, 2012 · Replies 2 · Mar 9, 2012

Replies: 2

Views: 2K

Undergrad Is the concept of dynamic space and the effects of gravity on light measurable?

Feb 29, 2012 · Replies 12 · Mar 7, 2012

Replies: 12

Views: 3K

Undergrad Time Travel Paradox: Can It Happen?

Dec 28, 2011 · Replies 11 · Mar 5, 2012

Replies: 11

Views: 5K

Undergrad Question on movement speeds relative to an observer.

Feb 29, 2012 · Replies 4 · Feb 29, 2012

Replies: 4

Views: 2K

Undergrad GeekGeodetic Effect Explained: Proving Relativity

Feb 21, 2012 · Replies 12 · Feb 28, 2012

Replies: 12

Views: 6K

Undergrad Coordinate time and proper time.

Feb 19, 2012 · Replies 26 · Feb 26, 2012

Replies: 26

Views: 24K

Undergrad Variation in speed of light - how does it accelerate after being slowed down?

Feb 19, 2012 · Replies 8 · Feb 26, 2012

Replies: 8

Views: 5K

Undergrad When is it ok to use non-relativistic equations?

Feb 25, 2012 · Replies 5 · Feb 25, 2012

Replies: 5

Views: 4K

Undergrad Using Mathematica for 4 vectors and etc.

Feb 22, 2012 · Replies 5 · Feb 23, 2012

Replies: 5

Views: 5K

Undergrad Relativity of Simultaneity & C Invariance Doubts

Feb 22, 2012 · Replies 2 · Feb 22, 2012

Replies: 2

Views: 2K

Undergrad What forces do act upon light?

Feb 10, 2012 · Replies 20 · Feb 21, 2012

Replies: 20

Views: 8K

Undergrad Black hole lifespan, what happens in the end?

Feb 19, 2012 · Replies 1 · Feb 20, 2012

Replies: 1

Views: 2K

Undergrad Is General Relativity More Accurate for Planetary Calculations?

Feb 16, 2012 · Replies 7 · Feb 19, 2012

Replies: 7

Views: 3K

Undergrad Speed & Direction of wave

Feb 6, 2012 · Replies 31 · Feb 16, 2012

2

Replies: 31

Views: 7K

Undergrad Time dilation explaination with mechanical clock instead of light clock

Feb 8, 2012 · Replies 55 · Feb 12, 2012

2

Replies: 55

Views: 17K

Undergrad Ed: The Significance of C in E=mc2 Explained

Jan 6, 2011 · Replies 57 · Feb 12, 2012

2

Replies: 57

Views: 21K

Undergrad Flying at the Speed of Sound: What Would a Human Feel?

Jan 26, 2012 · Replies 31 · Feb 10, 2012

2

Replies: 31

Views: 7K

Undergrad Is Time Dilation Caused by Distance?

Feb 8, 2012 · Replies 7 · Feb 8, 2012

Replies: 7

Views: 2K

Undergrad Relative motion and collisions

Feb 4, 2012 · Replies 7 · Feb 6, 2012

Replies: 7

Views: 5K

Undergrad Unravelling the Mystery of Light Speed (c)

Jan 29, 2012 · Replies 9 · Feb 3, 2012

Replies: 9

Views: 3K

Undergrad Is Dark Energy the Cause of the Universe's Accelerating Expansion?

Feb 2, 2012 · Replies 2 · Feb 2, 2012

Replies: 2

Views: 2K

Undergrad Travel Instantly: Is Distance Still a Factor?

Dec 2, 2005 · Replies 24 · Feb 1, 2012

Replies: 24

Views: 11K

Undergrad Basic questions on the speed of light

Jan 29, 2012 · Replies 11 · Jan 31, 2012

Replies: 11

Views: 3K

Undergrad Can light be transmitted through a fluid medium?

Jan 30, 2012 · Replies 2 · Jan 30, 2012

Replies: 2

Views: 2K

Undergrad Question of Relativity and the Speed of Light?

Jan 29, 2012 · Replies 3 · Jan 29, 2012

Replies: 3

Views: 2K

Undergrad What is the speed of gravitational waves?

Jan 29, 2012 · Replies 3 · Jan 29, 2012

Replies: 3

Views: 3K

Undergrad Wormholes for Dummies: Calculating Distance

Jan 24, 2009 · Replies 2 · Jan 28, 2012

Replies: 2

Views: 4K

Undergrad Speed of Light Limit: Earth & Spaceships

Jan 27, 2012 · Replies 2 · Jan 27, 2012

Replies: 2

Views: 2K

Undergrad Timetraveller killing himself in the past

Nov 18, 2011 · Replies 66 · Jan 26, 2012

3

Replies: 66

Views: 10K

Undergrad A question on Special Relativity

Jan 25, 2012 · Replies 10 · Jan 25, 2012

Replies: 10

Views: 3K

Undergrad Unraveling the Time Dilation Argument: Does Speed Affect the Passage of Time?

Jan 20, 2012 · Replies 34 · Jan 20, 2012

2

Replies: 34

Views: 4K

Undergrad How To Travel at The Speed of Light

Jan 17, 2012 · Replies 5 · Jan 20, 2012

Replies: 5

Views: 3K

Undergrad Why the speed of light in the equation?

Jan 17, 2012 · Replies 13 · Jan 19, 2012

Replies: 13

Views: 3K

Undergrad SR vs. GR: Unraveling the Differences in These Two Theories of Relativity

Jan 18, 2012 · Replies 2 · Jan 18, 2012

Replies: 2

Views: 9K

Undergrad Block Universe Theory: Evidence For & Against

Jan 13, 2012 · Replies 14 · Jan 17, 2012

Replies: 14

Views: 11K

Undergrad Is the Earth's gravity actually caused by its acceleration?

Jan 10, 2012 · Replies 4 · Jan 17, 2012

Replies: 4

Views: 3K

Undergrad What does the time coordinate represent in spacetime?

Jan 11, 2012 · Replies 19 · Jan 14, 2012

Replies: 19

Views: 4K

Undergrad Where can I find the formula for the relavistic rocket equation?

Jan 13, 2012 · Replies 3 · Jan 13, 2012

Replies: 3

Views: 2K

Undergrad Gravitational waves and Tidal forces

Jan 9, 2012 · Replies 11 · Jan 11, 2012

Replies: 11

Views: 5K

Undergrad Twin paradox and time dilation

Jan 6, 2012 · Replies 1 · Jan 6, 2012

Replies: 1

Views: 2K

Undergrad E=MC^2 Here,say we want to find the energy of a single

Jan 1, 2012 · Replies 9 · Jan 6, 2012

Replies: 9

Views: 3K

Undergrad Confused about time dilation. (Just got introduced to relativity))

Dec 19, 2011 · Replies 35 · Jan 5, 2012

2

Replies: 35

Views: 8K

Undergrad One clock on Earth, one on Mars

Jan 3, 2012 · Replies 26 · Jan 5, 2012

Replies: 26

Views: 18K

Undergrad Weightlessness: Gravitational Effects When a > g

Jan 2, 2012 · Replies 7 · Jan 3, 2012

Replies: 7

Views: 2K

Undergrad Could you say that GR is a theory of four or five dimensions?

Jan 1, 2012 · Replies 9 · Jan 1, 2012

Replies: 9

Views: 3K

Undergrad Relativistic mass thought experiment/proof?

Dec 29, 2011 · Replies 18 · Dec 29, 2011

Replies: 18

Views: 6K

Undergrad Time Dilation and Length Contraction the same thing?

Dec 26, 2011 · Replies 7 · Dec 27, 2011

Replies: 7

Views: 6K

Undergrad Length of Moving Rod Relative to Frame S

Dec 24, 2011 · Replies 10 · Dec 27, 2011

Replies: 10

Views: 3K

Undergrad Why Does Stationary Observer See Light Clock Traverse Longer Distance?

Dec 26, 2011 · Replies 4 · Dec 26, 2011

Replies: 4

Views: 2K

Undergrad Aberration of light in classical and relatvistical cases

Dec 25, 2011 · Replies 8 · Dec 26, 2011

Replies: 8

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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