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.
Graduate Black holes & hawking radiation
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Directional covariant derivative
  • · Replies 5 ·
Replies
5
Views
5K
Graduate Photon Velocity and Pythagorean Theorem
  • · Replies 13 ·
Replies
13
Views
5K
Graduate Proof of invariance of dp1*dp2*dp3/E
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is True Time the Key to Understanding Light Speed and Relativity?
  • · Replies 78 ·
3
Replies
78
Views
14K
Undergrad Ideas for small special relativity wiki-page
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Trouble following the derivation of Scott and Viner 1965
  • · Replies 2 ·
Replies
2
Views
3K
Graduate GR and the role of the graviton
  • · Replies 21 ·
Replies
21
Views
4K
Graduate What Does Curved Space Really Look Like? A Visual Guide to General Relativity
  • · Replies 20 ·
Replies
20
Views
5K
Graduate Velocity of laser light pt. on moon > c ?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate What is the resolution to the lighthouse paradox?
  • · Replies 34 ·
2
Replies
34
Views
11K
Graduate What is the energy here refers to?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Question: Spin particles in scalar gravitational field
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Coordinate Systems in Modern Interpretation of Relativity
  • · Replies 29 ·
Replies
29
Views
6K
Graduate Test problems in mechanics and special relativity
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How Can We Accurately Predict the Moon's Position Despite Quantum Uncertainty?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Proper Time For Photon on Null Geodesic
  • · Replies 3 ·
Replies
3
Views
7K
Graduate How to reduce Rindler metric to falt one
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Maxwell's Equations and Path of light & Gravitational wave
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Is Time Travel Possible with a Device That Slows Down Time?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate What If the Speed of Light Varied: Implications for Our Universe?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate The Nature of length contraction
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Special Relativity and Reference Frames
  • · Replies 9 ·
Replies
9
Views
4K
Graduate From special relativity to the classical one
  • · Replies 12 ·
Replies
12
Views
2K
Graduate Anisotropy of Space: Implications for Lorentz Invariance and Quantum Mechanics
  • · Replies 19 ·
Replies
19
Views
5K
Graduate Vacuum solution with nonzero cosmological constant
  • · Replies 8 ·
Replies
8
Views
3K
Graduate The upward force in General Relativity
  • · Replies 8 ·
Replies
8
Views
8K
Graduate Physical interpretation of spacetime curvature?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Researching Authors Who Have Explored Light Being Static
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad The inherent symmetry of time dilation
  • · Replies 4 ·
Replies
4
Views
2K
Graduate How Does Stopping a Train Realign Differing Time Perceptions in Relativity?
  • · Replies 20 ·
Replies
20
Views
4K
Graduate Can Gravitons Escape From a Black Hole if Light Cannot?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Why, why, why, Mr. Anderson, WHY?
  • · Replies 24 ·
Replies
24
Views
5K
Undergrad How Does Mass Relate to Time in Physics?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Equivalence principle & accelerated charge
  • · Replies 14 ·
Replies
14
Views
5K
Graduate Stokes theorem under covariant derivaties?
  • · Replies 1 ·
Replies
1
Views
6K
Graduate How Does Time Dilation Affect Perception of Speed in Relativity?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Birkhoff's Theorem: Schwarzschild Metric Unique Solution?
  • · Replies 15 ·
Replies
15
Views
5K
Graduate Alternate derivation of general relativity
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Twin Paradox: Einstein's Explanation and Alternative Interpretations
  • · Replies 219 ·
8
Replies
219
Views
27K
Graduate Tensors and differential geometry
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How to calculate relative velocity in SR
  • · Replies 16 ·
Replies
16
Views
6K
Graduate Explaining Time Dilation and the Universe
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad When the speed of an object becomes equal to the speed of light
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Time Dilation: Slower vs. Faster at v=c?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Does Nuclear Reaction Energy Contribute to the Existence of Infinity?
  • · Replies 41 ·
2
Replies
41
Views
5K
Graduate What is General Relativity and How Does it Work?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Four momentum of Photon in Center of Mass frame?
  • · Replies 2 ·
Replies
2
Views
6K
Undergrad Analyzing E=MC2: What Does Energy Have to Do with Distance?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Are electrical fields affected by gravity?
  • · Replies 16 ·
Replies
16
Views
8K
Graduate What will happen to a body that is not moving at all?
  • · Replies 33 ·
2
Replies
33
Views
5K
Graduate Is it possible to experience the same event twice?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate What does a rod passing through a hole look like in the inertial frame?
  • · Replies 86 ·
3
Replies
86
Views
11K
Graduate Equivalence principle and Acceleration
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Poincaré on the constancy of light
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Relativistic collision and max energy
  • · Replies 12 ·
Replies
12
Views
5K
Graduate Andromeda paradox and empirical consequences
  • · Replies 22 ·
Replies
22
Views
9K
Graduate Unifying Quantum and Relativity
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Understanding EM Stress Energy Tensor: Sources and Current Density
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Vector drive - faster than light?
  • · Replies 9 ·
Replies
9
Views
3K
Einstein's real importance to relativity theory
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Solving a Paradox of SR: A Rocket Collision Example
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Is Space More Like Fabric or Fluid?
  • · Replies 8 ·
Replies
8
Views
5K
Graduate How can simultaneity and the constant speed of light stay coexist.
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Ether hypothesis and M/M Experiment not needed
  • · Replies 20 ·
Replies
20
Views
5K
Graduate How does weight work in general relativity?
  • · Replies 10 ·
Replies
10
Views
5K
Graduate How High Must A Tower Be To Break Earth's Gravity?
  • · Replies 16 ·
Replies
16
Views
4K
Graduate What Are Christoffel Symbols and Their Types in General Relativity?
  • · Replies 5 ·
Replies
5
Views
6K
Undergrad What is the true nature of gravity?
  • · Replies 16 ·
Replies
16
Views
4K
Graduate Lorentz-FitzGerald Contraction
  • · Replies 8 ·
Replies
8
Views
5K
Graduate Measuring curvature with parallel transport
  • · Replies 2 ·
Replies
2
Views
3K
Graduate A fast fly hits a train and then ?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate How is the increase in relativistic mass determined in particle collisions?
  • · Replies 20 ·
Replies
20
Views
5K
Graduate Partial derivative as a vector
  • · Replies 12 ·
Replies
12
Views
11K
Graduate Communication with no time boundaries?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate What Causes Time Dilation in the Twin Paradox?
  • · Replies 250 ·
9
Replies
250
Views
35K
Graduate The one-form basis and contraction
  • · Replies 5 ·
Replies
5
Views
5K
Undergrad How is Time Dilation Possible in Front of Me?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Optical effects of special relativity
  • · Replies 3 ·
Replies
3
Views
4K
Graduate How is general relativity cast as a gauge theory?
  • · Replies 12 ·
Replies
12
Views
4K
Undergrad Speed of light c = 0 Km/s. Not 300K, but a big, fat zero Km/sec
  • · Replies 17 ·
Replies
17
Views
8K
Graduate Will a Photon Launched Perpendicular to a Point Source Mass Ever Return?
  • · Replies 14 ·
Replies
14
Views
3K
High School How does light travel so fast?
  • · Replies 25 ·
Replies
25
Views
10K
Graduate Acceleration and Curvature of space-time
  • · Replies 13 ·
Replies
13
Views
7K
Graduate Geometry of Space as a Function of Time: Time Dilation & GR
  • · Replies 10 ·
Replies
10
Views
3K
Graduate What is the relationship between the metric tensor and spacetime?
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Did the Apollo Missions Use an Atomic Clock for Time Dilation Experiments?
  • · Replies 3 ·
Replies
3
Views
6K
Graduate Can We Theoretically Travel Faster Than Light?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Calculating Particle Decay in a Magnetic Field
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Covariant vs. contravariant time component
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Does relativity apply to a coordinate system moving with a photon?
  • · Replies 16 ·
Replies
16
Views
6K
Graduate Length contraction depends on the distance of the object?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Calculation of the black hole horizon's surface
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Understanding the Metric Tensor and its dx's in Space-Time
  • · Replies 4 ·
Replies
4
Views
2K
Graduate What determines who feels the time dilation?
  • · Replies 28 ·
Replies
28
Views
4K
Graduate Breakedown of common sense and inertial ccordinate systems
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Affect of gravity instant or not?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Travelling near the speed of light
  • · Replies 13 ·
Replies
13
Views
7K
Graduate Where did General Relativity Come From
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Why do objects follow curved paths in spacetime without the presence of gravity?
  • · Replies 7 ·
Replies
7
Views
3K