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 Is it true than general relativity can be deduced from a max
  • · Replies 4 ·
Replies
4
Views
1K
Graduate Throwing something into a black hole
  • · Replies 11 ·
Replies
11
Views
3K
Graduate GR Journal: Equivalence Principle & Tidal Forces
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Thomas precession Goldstein/Eisberg versus Taylor/Wheeler
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Does relativity change the rules for time being a vector or a scalar?
  • · Replies 25 ·
Replies
25
Views
7K
Graduate Close to the speed of light relative to what?
  • · Replies 27 ·
Replies
27
Views
3K
Graduate Kerr & Kerr-Newman Solutions in Straumann's GR
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Understanding Lambda Mu Nu Prime and Its Indices
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Now plane moving to the past and future
  • · Replies 17 ·
Replies
17
Views
2K
Undergrad Does Mass Really Change with Velocity Near the Speed of Light?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Einstein's argument for a finite universe
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Help with Notation: (Λ-1)μν=Λνμ ≡ ημρΛρσησν
  • · Replies 2 ·
Replies
2
Views
990
Graduate Deriving the Lorentz Transformation
  • · Replies 27 ·
Replies
27
Views
6K
Graduate Learning General Relativity: Finding Examples with Numbers
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Practice calculations for a relativistic speed object
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Experimental determination of the metric tensor
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Are Electron Neutrinos Tachyons? Expert Analysis of 1408.2804v7
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Proper mass vs Schwarzschild Mass
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Ball Thrown Up: Constant Speed Despite Height
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Could black holes have no singularity?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Are force fields deformed by length contraction?
  • · Replies 28 ·
Replies
28
Views
3K
Graduate Understanding Einstein's Field Equations Solutions
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Sphere-Ellipsoid Metric Transformation at u = 0.99c
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Do Photons Perceive Time?
  • · Replies 4 ·
Replies
4
Views
2K
High School Light Constant: Speed, Increase, Decrease?
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad General Case of Relative Velocities
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Is the twin paradox affected by the topology of a torus?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Useful relativistic gravity equation of motion
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Do we have time because we are moving?
  • · Replies 72 ·
3
Replies
72
Views
10K
Graduate Relativistic Orbits: Effects of Mass Increase & Length Contraction
  • · Replies 13 ·
Replies
13
Views
2K
Graduate Effect of Magnitude & Direction on Organpipe's Note
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Riemann tensor and derivatives of ##g_{\mu\nu}##
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Where Can I Find a Detailed Explanation of Stress-Energy Tensors in GR?
  • · Replies 93 ·
4
Replies
93
Views
14K
Graduate Kind of newbie question about gravity
  • · Replies 55 ·
2
Replies
55
Views
6K
Graduate Comoving Observers Concepts cosmology
  • · Replies 9 ·
Replies
9
Views
7K
Graduate Understanding the Metric Tensor: A 4-Vector Perspective
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Black Holes & Hawking Radiation: Time Paused in Gravity?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Does Gravity Affect Time Dilation on a Flat, Non-Rotating Earth?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is there a difference between rest mass and invariant mass?
  • · Replies 11 ·
Replies
11
Views
4K
High School Time Travel & Theory of Relativity for HS Students
  • · Replies 2 ·
Replies
2
Views
1K
Graduate What Is the Truth Behind the Misnomer of Stable Wormholes?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Twin paradox and the size of the universe
  • · Replies 32 ·
2
Replies
32
Views
4K
Graduate Light clock on Train experiment.
  • · Replies 13 ·
Replies
13
Views
2K
Undergrad Speed of Light: Does It Slow Down in a Gravity Field?
  • · Replies 14 ·
Replies
14
Views
3K
Graduate Proper Distance, Rest Length: What to Know
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Real Earth Diameter: SRT Calculation Revealed
  • · Replies 21 ·
Replies
21
Views
3K
Graduate Is this an acceptable way to state the EP?
  • · Replies 19 ·
Replies
19
Views
2K
Graduate EMrocket Engine: Does it Violate Newton's Law?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Kaluza-Klein Theory Q&A: Inducing EM Field & Ricci Tensor
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Choice of Origin of Coordinate Systems
  • · Replies 15 ·
Replies
15
Views
3K
Graduate Surface gravity of Kerr black hole
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Does Penrose's Andromeda paradox prove determinism?
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Explaining Universe Expansion with Gravitons in String Theory/Supergravity
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Norm of Vector Formed by Two Vectors
  • · Replies 13 ·
Replies
13
Views
2K
Graduate A question of history concerning Rindler Coordinates
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Questions about Gravitational Waves: Answers Here
  • · Replies 5 ·
Replies
5
Views
1K
Graduate Will Time Dilation at 100% c Speed Result in Eternal Life?
  • · Replies 44 ·
2
Replies
44
Views
5K
Graduate A direct derivation of the speed transformation formula?
  • · Replies 23 ·
Replies
23
Views
3K
Graduate Diameter of Earth With GRT: Did Feynman Say It?
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Compare Starting w/ Ansatz vs Complete Solution
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Ricci tensor of schwarzschild metric
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad E=MC^2 Explained: Photon Mass & Energy
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Does object lose kinetic energy due to emitting gravitational waves?
  • · Replies 14 ·
Replies
14
Views
4K
Graduate Gravitational Lensing Derivations - Is There Another Way?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Time dilation as seen by different observers
  • · Replies 16 ·
Replies
16
Views
3K
Graduate A thought experiment general relativity
  • · Replies 25 ·
Replies
25
Views
3K
Graduate Are There Really 4 Isotropic Axes of Spacetime at Light Speed?
  • · Replies 3 ·
Replies
3
Views
1K
Graduate How Does a Photon Get Absorbed at t=0?
  • · Replies 5 ·
Replies
5
Views
1K
Graduate What Happens to the Space Between Relativistically Moving Spaceships?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Traveling at Near Speed of Light - Questions Answered
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Bending of Light: Newton vs Einstein
  • · Replies 13 ·
Replies
13
Views
2K
Graduate Rest Energy of Electrons in Particle Accelerators: Zero or Not?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Compacting Matter in a Black Hole Singularity: Is It Pure Entropy?
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Euler-Lagrange Equation of $$ds^2=-f(x)dt^2+g(x)dx^2+2l(x)dxdt$$
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Modifications in General Relativity
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Near-C Speed Spinning Top: Immovable Object?
  • · Replies 10 ·
Replies
10
Views
2K
Graduate Relativity Musings: Gravitation, Acceleration & Inertial Ref Frames
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Inverse curvature of space-time
  • · Replies 21 ·
Replies
21
Views
5K
Undergrad Math & Relativity: Understand Einstein's Theories
  • · Replies 5 ·
Replies
5
Views
1K
Graduate Progression of Time & Entropy: Is the Pass. Slowing?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Lie Algebra of Lorentz Group: Weird Notation?
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Photon Rest Mass: Understand 4 Momentum & Mass
  • · Replies 1 ·
Replies
1
Views
2K
Graduate General Theory of Relativity Question
  • · Replies 30 ·
2
Replies
30
Views
4K
Graduate Momentum to Energy Conversion: Learn How it is Done
  • · Replies 4 ·
Replies
4
Views
1K
Graduate Ball Thrown Up Follows Curvature of Spacetime
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Hawking Radiation from All Gravitational Sources?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Length Contraction in Special Relativity
  • · Replies 11 ·
Replies
11
Views
2K
Graduate Rest Energy of Electron: E=m(0)*c^2=0.511MeV
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Do atmospheric muons accelerate?
  • · Replies 34 ·
2
Replies
34
Views
3K
Graduate Why must the event horizon be a null surface?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate High Energy Electron Greetings: Creation of Extra Particles?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Relativistic kinetic energy derivation (from Work expended)
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Understanding Light's Motion in a Moving Clock
  • · Replies 13 ·
Replies
13
Views
3K
Undergrad Time dilation - effect on clock or 'time' itself?
  • · Replies 10 ·
Replies
10
Views
2K
Graduate Twin Paradox: Will Car A Age Slower?
  • · Replies 4 ·
Replies
4
Views
1K
Graduate Null geodesics of the FRW metric
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Does the weight of a relativistic mass change when measured on a moving scale?
  • · Replies 54 ·
2
Replies
54
Views
6K
Graduate Black Hole Penrose Process: Understanding Negative Energy Condition
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Pound-Rebka Experiment: Accuracy & Data Availability
  • · Replies 8 ·
Replies
8
Views
1K
Graduate Observable universe as a black hole
  • · Replies 6 ·
Replies
6
Views
2K