Special and General Relativity Forum

Post thread
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.
Show Lorentz invariance for Euler-Lagrange's equations- how?
  • · Replies 4 ·
Replies
4
Views
6K
Why do people insist on the graviton
  • · Replies 2 ·
Replies
2
Views
2K
Hypothesis about speed of light
  • · Replies 22 ·
Replies
22
Views
4K
Unraveling the Concept of Relativity: Understanding Light and Time
  • · Replies 5 ·
Replies
5
Views
4K
Relativity Questions: Answers for the Beginner
  • · Replies 3 ·
Replies
3
Views
3K
Gravity, cause or effect of time dilation?
  • · Replies 9 ·
Replies
9
Views
7K
Why Does the Speed of Light Remain Constant When Moving in an Airplane?
  • · Replies 3 ·
Replies
3
Views
2K
Is there a relation between GCT and Lorentz invariance?
  • · Replies 2 ·
Replies
2
Views
2K
How infinite does time get by gamma
  • · Replies 3 ·
Replies
3
Views
2K
Understanding Notation in Hawking and Ellis: V_{(c;d)} and V_{[c;d]}
  • · Replies 2 ·
Replies
2
Views
2K
A question concerning the lorentz transformation derivation
  • · Replies 21 ·
Replies
21
Views
5K
GR explanation of Newtonian Phenomena
  • · Replies 14 ·
Replies
14
Views
4K
How can the Riemann tensor help me calculate the bend in space-time?
  • · Replies 3 ·
Replies
3
Views
3K
The classical aether vs. the modern vacuum
  • · Replies 57 ·
2
Replies
57
Views
17K
Apparent position and light travel time
  • · Replies 77 ·
3
Replies
77
Views
17K
Question on Special Relativity.
  • · Replies 18 ·
Replies
18
Views
4K
Interesting new take on gravitation?
  • · Replies 4 ·
Replies
4
Views
2K
Rotating Spacetime - a question
  • · Replies 2 ·
Replies
2
Views
2K
Why does light have invarient speed?
  • · Replies 3 ·
Replies
3
Views
3K
GR/SR Space-Time: Explaining Gravitation and its Geodesics
  • · Replies 1 ·
Replies
1
Views
2K
Plotting space-time curvatures as curved 2D-surfaces
  • · Replies 9 ·
Replies
9
Views
8K
An illustration of relativity with rulers and clocks
  • · Replies 8 ·
Replies
8
Views
21K
Massive objects moving too fast
  • · Replies 57 ·
2
Replies
57
Views
11K
Understanding ct: Time vs Distance on Spacetime Diagrams
  • · Replies 25 ·
Replies
25
Views
12K
Finding a Textbook for General Relativity and String Theory
  • · Replies 6 ·
Replies
6
Views
3K
Does my spaceship accelerate forever?
  • · Replies 17 ·
Replies
17
Views
9K
Help with showing the existance of the Schwarzschild singularity at r=0.
  • · Replies 4 ·
Replies
4
Views
2K
Is Einstein's Explanation of General Relativity Self-Contradicting?
  • · Replies 19 ·
Replies
19
Views
4K
Is Relativity Considered a Gauge Theory?
  • · Replies 1 ·
Replies
1
Views
4K
Black Hole Existence: Questions Answered
  • · Replies 4 ·
Replies
4
Views
3K
Does Clock Speed Vary with Gravitational Potential Inside a Spherical Cavity?
  • · Replies 13 ·
Replies
13
Views
3K
How close to light speed can you theoretically get?
  • · Replies 16 ·
Replies
16
Views
6K
Parallel transport approximation
  • · Replies 1 ·
Replies
1
Views
3K
Is Gravity Really Linked to Mass or Something More Complex?
  • · Replies 6 ·
Replies
6
Views
5K
A noob question about relativity.
  • · Replies 9 ·
Replies
9
Views
3K
Derivative of metric and log identity
  • · Replies 11 ·
Replies
11
Views
5K
What Two Speed Measurements Do Observers in Relative Motion Always Agree On?
  • · Replies 9 ·
Replies
9
Views
5K
Finding Geometry of Near-Extremal D3 Brane | Schwarzschild in 5D
  • · Replies 4 ·
Replies
4
Views
3K
How Does Time Travel Through Wormholes Violate Causality?
  • · Replies 1 ·
Replies
1
Views
4K
Does that help?Cheers,Chris.Pendulum Clock Time Dilation
  • · Replies 3 ·
Replies
3
Views
5K
Elapsed time on accelerating clock
  • · Replies 5 ·
Replies
5
Views
6K
Why Was the Big Bang Not a Black Hole?
  • · Replies 14 ·
Replies
14
Views
5K
Understanding the Units in Relativistic Momentum Calculations
  • · Replies 3 ·
Replies
3
Views
22K
Information for the uninformed
  • · Replies 20 ·
Replies
20
Views
4K
Noob with a question about lightspeed travel.
  • · Replies 7 ·
Replies
7
Views
3K
Adjoint of functional derivative in superspace
  • · Replies 1 ·
Replies
1
Views
2K
Non-standard clock synchronization
  • · Replies 10 ·
Replies
10
Views
4K
Is the Relative Speed of Light Constant?
  • · Replies 12 ·
Replies
12
Views
3K
Understanding the Train Experiment: Explaining Observers and Time Perception
  • · Replies 50 ·
2
Replies
50
Views
9K
Is the Aether Truly Attached to Earth?
  • · Replies 12 ·
Replies
12
Views
3K
Deriving the line element in homogenous isotropic space
  • · Replies 1 ·
Replies
1
Views
3K
Conventionality and clock symchrnization
  • · Replies 4 ·
Replies
4
Views
3K
Simple problem driving me nuts :-)
  • · Replies 4 ·
Replies
4
Views
3K
Does a Spinning Cylinder Affect Rocket Acceleration and Energy Conservation?
  • · Replies 27 ·
Replies
27
Views
6K
The Villain's Fate: Alive or Dead?
  • · Replies 4 ·
Replies
4
Views
4K
What is the required energy for reaching 99.99999c velocity?
  • · Replies 5 ·
Replies
5
Views
3K
What Is the Importance of Understanding the 4th Dimension?
  • · Replies 5 ·
Replies
5
Views
4K
Colliding rotating black holes
  • · Replies 3 ·
Replies
3
Views
3K
Can information travel faster than light?
  • · Replies 5 ·
Replies
5
Views
4K
Learn GR: Mathematics Required for General Relativity
  • · Replies 2 ·
Replies
2
Views
2K
Local acceleration experienced by observer
  • · Replies 10 ·
Replies
10
Views
4K
Understanding the Validity of Relativity: Questioning and Learning
  • · Replies 46 ·
2
Replies
46
Views
6K
Angular momentum and quantum spin
  • · Replies 1 ·
Replies
1
Views
2K
Can relativistic abberation be observed in quasar jets?
  • · Replies 5 ·
Replies
5
Views
5K
Light moves at C from all frames of references?
  • · Replies 9 ·
Replies
9
Views
4K
Energy-mom tensor of charged dust (homogeneous and isotropic)
  • · Replies 1 ·
Replies
1
Views
4K
Consensus about Van Flandern's ideas on speed of gravity?
  • · Replies 53 ·
2
Replies
53
Views
15K
Proper time of accelerated clocks
  • · Replies 18 ·
Replies
18
Views
7K
Question on traveling spaceships
  • · Replies 19 ·
Replies
19
Views
5K
Emission/Absorption and electron orbits
  • · Replies 14 ·
Replies
14
Views
5K
Speed of Light and Flash Light
  • · Replies 2 ·
Replies
2
Views
2K
Help Deriving formula for Einstein Radius
  • · Replies 1 ·
Replies
1
Views
8K
Radial geodesic distance with Schwarzschild's solution
  • · Replies 4 ·
Replies
4
Views
6K
I have 2 questions about relativity
  • · Replies 6 ·
Replies
6
Views
3K
Reverse-tracing Einstein's field equation
  • · Replies 11 ·
Replies
11
Views
8K
How Large Must a Spark Chamber Be to Qualify as an Inertial Frame?
  • · Replies 1 ·
Replies
1
Views
3K
How do I find the line element on a torus?
  • · Replies 2 ·
Replies
2
Views
5K
Calculating Christoffel symbols for a spherical shell in 2-space
  • · Replies 10 ·
Replies
10
Views
4K
Is Synchronizing Clocks at Different Positions Neglecting Light Travel Delays?
  • · Replies 7 ·
Replies
7
Views
4K
Black holes and the time issue
  • · Replies 2 ·
Replies
2
Views
2K
Educational value of spacetime diagrams
  • · Replies 16 ·
Replies
16
Views
6K
Can Anything Travel Faster Than Light - Explained Simply
  • · Replies 65 ·
3
Replies
65
Views
12K
Special Relativity, 2nd postulate, and a dilemma
  • · Replies 6 ·
Replies
6
Views
3K
From Lorentz transformatios to Bondi's approach
  • · Replies 7 ·
Replies
7
Views
4K
Is the Universe a Singular Entity with Time as an Illusion?
  • · Replies 1 ·
Replies
1
Views
2K
How Does Kaluza-Klein Theory Separate Classical and Quantum Equations of Motion?
  • · Replies 13 ·
Replies
13
Views
6K
Understanding the Speed of Light in Theory of Relativity: A Beginner's Guide
  • · Replies 8 ·
Replies
8
Views
3K
Tugging on a Chain: Earth-Moon Connection Explored
  • · Replies 4 ·
Replies
4
Views
2K
The light clock and time dilation.
  • · Replies 3 ·
Replies
3
Views
4K
Deriving/Justifying Lorentz Interval
  • · Replies 15 ·
Replies
15
Views
10K
Spacetime transformations or not?
  • · Replies 9 ·
Replies
9
Views
3K
What Is the Triplet Paradox and Its Implications for Time Dilation?
  • · Replies 6 ·
Replies
6
Views
4K
Why is the Torsion Tensor Overlooked in General Relativity?
  • · Replies 2 ·
Replies
2
Views
3K
Tachyons travel backward in time?
  • · Replies 71 ·
3
Replies
71
Views
44K
Is the Contravariant Derivative Defined by Contracting with the Metric?
  • · Replies 3 ·
Replies
3
Views
5K
Twin Paradox: Why Does the Traveling Twin Age Slower?
  • · Replies 19 ·
Replies
19
Views
4K
Can Lorentz Transform Hold in a Discrete Space-Time Model?
  • · Replies 2 ·
Replies
2
Views
3K
Einstein's Thought-Experiment: Disgruntled Observer's Perspective
  • · Replies 3 ·
Replies
3
Views
3K
Schwarzschild Metric: Combining Special & General Relativity
  • · Replies 10 ·
Replies
10
Views
8K
Proof of invariance of gas pressure
  • · Replies 44 ·
2
Replies
44
Views
9K