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 Mass of a system of two photons
  • · Replies 52 ·
2
Replies
52
Views
16K
Graduate Light Speed Relativity: Discussions on Simultaneous Photons
  • · Replies 18 ·
Replies
18
Views
5K
Undergrad Question about deflection of light test
  • · Replies 29 ·
Replies
29
Views
6K
Graduate Orbital Mechanics: NASA Launching Probes & GR/SR Considerations
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Is Time a Measure of Length in a Single Point?
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Electron beams and an inertial frame problem
  • · Replies 10 ·
Replies
10
Views
7K
Graduate Theory of Everything: Bridging Relativity & Quantum Mechanics
  • · Replies 8 ·
Replies
8
Views
3K
Graduate I have devised away to travel Faster Than Light
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Proof of Mass Dilation: Experimental Evidence & Examples
  • · Replies 9 ·
Replies
9
Views
8K
Undergrad How Does a Black Hole Attract Light?
  • · Replies 10 ·
Replies
10
Views
11K
Graduate Physical Intuition for Length Contraction
  • · Replies 8 ·
Replies
8
Views
5K
Graduate Schwarzchild solution with cosmological constant
  • · Replies 3 ·
Replies
3
Views
6K
Undergrad Can space-time curvature be applied to artificial satellites.
  • · Replies 21 ·
Replies
21
Views
5K
Graduate What do they do in numerical GR ?
  • · Replies 16 ·
Replies
16
Views
5K
Graduate Trying to wrap my pea sized brain around the universe.
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Energy-mom tensor does not determine curvature tensor uniquely ?
  • · Replies 10 ·
Replies
10
Views
5K
Undergrad Questions about General Relativity (GR) - Andrew
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Solving Basic SR Confusion for Twin Paradox
  • · Replies 70 ·
3
Replies
70
Views
11K
Graduate Why is the speed of light constant in special relativity?
  • · Replies 14 ·
Replies
14
Views
4K
Undergrad Questions about motion equations
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad General Relativity for Dummies
  • · Replies 42 ·
2
Replies
42
Views
36K
Graduate Why is the curvature around a star asymmetrical in the theory of relativity?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate From the scalar of curvature (Newman-Penrose formalism) to the Ricci scalar
  • · Replies 8 ·
Replies
8
Views
8K
Graduate Fundamental identity of SR valid in GR?
  • · Replies 16 ·
Replies
16
Views
5K
Graduate Time dilation without acceleration
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Complex four vector algebra in relativity
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Smolin's in depth perspective on Einstein, man and mind (NYRB)
  • · Replies 1 ·
Replies
1
Views
2K
Graduate A question about a relativity light clock
  • · Replies 11 ·
Replies
11
Views
4K
Undergrad Time Dilation: An Explainer for Beginners
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Does Einstein's General Relativity need to be adjusted for the Higgs field?
  • · Replies 7 ·
Replies
7
Views
5K
Undergrad How Can Photons Have Momentum If They Have No Mass?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Time Dilation Explained: Why Planes Lose Time
  • · Replies 5 ·
Replies
5
Views
3K
Graduate How to survive in a black hole: Myth Debunked
  • · Replies 45 ·
2
Replies
45
Views
10K
Graduate Understanding SR: The Relationship Between Speed, Time, and Space Explained
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Debunking Crackpot Theories on Special and General Relativity | calphysics.org
  • · Replies 7 ·
Replies
7
Views
2K
High School Is Time Travel Physically Possible According to Einstein's Theories?
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Nothing can exceed the speed of light
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Uncovering the Metric Sign in Einstein's Equations
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Effects of Accelerating Point Mass on Orbital Dynamics
  • · Replies 8 ·
Replies
8
Views
4K
Graduate What is a Cauchy surface and its significance in spacetime?
  • · Replies 2 ·
Replies
2
Views
7K
Graduate Is Time a Constant Journey or a Fixed Point in Space?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate General Relativity: Comparing Newtonian and Einstein Circular Orbits
  • · Replies 7 ·
Replies
7
Views
5K
Graduate Speed of light in the universe, experimental data
  • · Replies 19 ·
Replies
19
Views
5K
Graduate About interpretations and logic
  • · Replies 20 ·
Replies
20
Views
5K
Graduate Does the Sun Create Different Geodesics for Each Planet?
  • · Replies 18 ·
Replies
18
Views
6K
Graduate Light, Elevators, and Gravity: A Confusing Experiment or Just Me?
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Does a black hole have a stress-energy tensor?
  • · Replies 17 ·
Replies
17
Views
12K
Graduate How Does Newton's Second Law Adapt to Relativistic Speeds?
  • · Replies 19 ·
Replies
19
Views
21K
Graduate Non-relativistic derivation of Schwarzschild's equation
  • · Replies 8 ·
Replies
8
Views
5K
Undergrad Does Light Exert a Force on Lasers?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Is the speed of light really constant?
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad Time as a function of distance for constant a
  • · Replies 18 ·
Replies
18
Views
9K
Graduate Calculating distance between two points in potential
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Particle production in curved spacetime
  • · Replies 13 ·
Replies
13
Views
3K
Graduate Conceptual Aspect of Relativity: Electric & Magnetic Forces
  • · Replies 1 ·
Replies
1
Views
2K
Graduate A question about forces in different references of frame
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Question on advance of perihelion.
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Static vs Stationary Spacetime Metric: Examples & Explained
  • · Replies 11 ·
Replies
11
Views
23K
Physics Articles - Abstracts for SR and GR Papers
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Parametric equations for geodesics
  • · Replies 4 ·
Replies
4
Views
7K
Undergrad Time Dilation: Stationary vs. Moving Atomic Clocks
  • · Replies 52 ·
2
Replies
52
Views
10K
Graduate Question about the weak field approximation
  • · Replies 18 ·
Replies
18
Views
7K
Undergrad Distance Travelled by B After Circumnavigating A: 2\pi r
  • · Replies 5 ·
Replies
5
Views
8K
Graduate Electric Current in Special Relativity
  • · Replies 4 ·
Replies
4
Views
5K
Graduate SR forbides BHs and GR demands them
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Point Masses and the Speed of Light: An Exploration of Relativity
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Professionally researched relativistic orbits
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Hi, can't find the way to debunk this
  • · Replies 23 ·
Replies
23
Views
4K
Graduate Geodesics between two points ?
  • · Replies 11 ·
Replies
11
Views
4K
Undergrad Relativity in Film: A Resource Guide
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How Does Snell's Law Change in Curved Spacetime?
  • · Replies 1 ·
Replies
1
Views
3K
  • Poll Poll
Graduate Schwarzschild Orbits in Cartesian coordinates
  • · Replies 62 ·
3
Replies
62
Views
38K
Graduate Question about the energy momentum tensor
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Connection of General relativity and geometric Refraction of light
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Is Jefimenko's Approach to Relativity Based on Retarded Potentials Valid?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Vacuum Solutions: General Relativity Explained
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Looking out the window of a fast ship
  • · Replies 24 ·
Replies
24
Views
4K
Undergrad Clock Ticking Speed: Center vs Surface
  • · Replies 11 ·
Replies
11
Views
5K
Graduate Unveiling the Mystery of Simultaneity
  • · Replies 31 ·
2
Replies
31
Views
6K
Graduate Liftetime of photons in matter
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Frame fields vs. Coordinate bases
  • · Replies 4 ·
Replies
4
Views
8K
Graduate Does gravitational waves participate in gravitation interaction?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate How is 3-space curved without a fourth spatial dimension?
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Some simple minded aspects of gravity
  • · Replies 18 ·
Replies
18
Views
5K
Undergrad Relationship between E=mc^2 and gravity
  • · Replies 14 ·
Replies
14
Views
12K
Graduate What is it about speed that affects time?
  • · Replies 19 ·
Replies
19
Views
16K
Graduate Solving Paradox of SR & Warning Alpha Centaurians: Passer-by's Perspective
  • · Replies 40 ·
2
Replies
40
Views
8K
Graduate Rotating Black Holes | Angular Momentum Explained
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Which direction did they measure a meter?
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Lorentz Factor Explained for Laymen: Twin Paradox
  • · Replies 4 ·
Replies
4
Views
4K
Graduate General Relativity vs Newtonian Mechanics
  • · Replies 5 ·
Replies
5
Views
6K
Graduate Is Acceleration Truly Relative or Absolute in the Context of General Relativity?
  • · Replies 14 ·
Replies
14
Views
5K
Graduate How Does Time Function as a Fourth Dimension in Our Solar System?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Gravitomagnetism and acceleration
  • · Replies 19 ·
Replies
19
Views
4K
Graduate What Is the Physical Meaning of the Torsion Tensor in General Relativity?
  • · Replies 9 ·
Replies
9
Views
10K
Graduate Has the Hawking-Penrose Debate Shaped Modern Physics?
  • · Replies 1 ·
Replies
1
Views
5K
Graduate Understanding Einstein-Hilbert Action: Detailed Explanation from an Expert
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Time & Gravity: GR in Physics Today?
  • · Replies 60 ·
3
Replies
60
Views
18K
Graduate Full Orbit in General Relativity: Defining a Frame Invariant Concept
  • · Replies 19 ·
Replies
19
Views
5K
Graduate Practical meaning of simultaneity calculations?
  • · Replies 10 ·
Replies
10
Views
3K