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 The rotating disk of Albert Einstein
  • · Replies 54 ·
2
Replies
54
Views
11K
Graduate Photons Trapped on Expanding Event Horizons
  • · Replies 3 ·
Replies
3
Views
1K
Graduate A simple problem of conservation of momentum
  • · Replies 2 ·
Replies
2
Views
2K
Graduate 2013 edits to the sci.physics.faq Rotating Rigid Disk in Relativity
  • · Replies 15 ·
Replies
15
Views
2K
Graduate Confusion about time dilation and length contraction
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Can You Travel Faster Than Light While Running on a Train?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Is Gravity the only force that affects time?
  • · Replies 7 ·
Replies
7
Views
3K
High School Can Humans Really Time Travel?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Why Does Light Fall Into a Black Hole?
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Is Spacetime a Field in General Relativity?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Does gravity affect the speed of light on Jupiter ?
  • · Replies 15 ·
Replies
15
Views
3K
Graduate Solving Newtonian Tensor from A. Zee's EGR Book
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Is there an absolute reality in the universe, independent of observation?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Calculating Absolute Velocity at 50% the Speed of Light
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Can different time-slices of an object interact?
  • · Replies 19 ·
Replies
19
Views
3K
Graduate Klein bottle in 4d- Questions/ Discussion
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is Space-Time Symmetrical or Asymmetrical?
  • · Replies 8 ·
Replies
8
Views
2K
Graduate The invariant momentum-space volume element?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Minkowski Metric and Lorentz Metric
  • · Replies 5 ·
Replies
5
Views
5K
Graduate Fuel conservation near a Schwarzschild black hole
  • · Replies 5 ·
Replies
5
Views
2K
Graduate How Does a Photon Experience Time During Its Journey Across the Universe?
  • · Replies 13 ·
Replies
13
Views
2K
Graduate Spacetime symmetries vs. diffeomorphism invariance
  • · Replies 34 ·
2
Replies
34
Views
6K
Graduate A stationary photon for an observer in circular motion?
  • · Replies 11 ·
Replies
11
Views
2K
Graduate Accelerated Rest Frame: Time Flow Explained
  • · Replies 23 ·
Replies
23
Views
3K
Graduate Is the metric tensor constant in polar coordinates?
  • · Replies 9 ·
Replies
9
Views
13K
Graduate Redshifting Through Hole in Earth
  • · Replies 88 ·
3
Replies
88
Views
7K
Graduate Current through a wire and special relativity
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Error in Carroll's Spacetime Geometry?
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad Uncovering the Mystery of Time Dilation in Mechanical Watches
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Is the Twin Paradox a Misinterpretation of Relativity?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Generating energy with wormholes?
  • · Replies 9 ·
Replies
9
Views
4K
Graduate If light approaches a black hole will it accelerate?
  • · Replies 10 ·
Replies
10
Views
2K
Graduate Time Dilation: An Overview of an Experiment
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Understanding the lightspeed limit
  • · Replies 21 ·
Replies
21
Views
3K
Graduate Observing objects moving close to light speed
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Are there non-perfect fluid stress-energy tensors in GR?
  • · Replies 36 ·
2
Replies
36
Views
5K
Graduate Why do we always need to define simultaneity in relativity. The
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Geodesic Equation & Orbital Surface Area Around the Sun
  • · Replies 3 ·
Replies
3
Views
2K
Graduate What is the Relationship Between Moment of Inertia and Relativity?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Coordinates in general relativity
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Space Time Diagrams? And lorentz Transformation?
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad What is the Definition of the Age of the Universe and How is it Determined?
  • · Replies 13 ·
Replies
13
Views
3K
Graduate If time slows at speed of light
  • · Replies 6 ·
Replies
6
Views
4K
Graduate What is the effect of curvature on the rigidity of a beam?
  • · Replies 13 ·
Replies
13
Views
2K
Graduate Why is the stress-energy tensor symmetric?
  • · Replies 5 ·
Replies
5
Views
6K
Graduate 4-acceleration of a vector in a linearly moving train
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Is it possible to exceed the speed of light?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Studying GR from a mathematical point of view
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Massless charged particle in electrostatic field
  • · Replies 20 ·
Replies
20
Views
3K
Graduate Understanding the Twin Paradox in Time Dilation
  • · Replies 17 ·
Replies
17
Views
3K
Graduate Use of chain rule in showing invariance.
  • · Replies 4 ·
Replies
4
Views
3K
Graduate General relativity without Differential geometry
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Does General Relativity Theory Account for Accelerating Frames?
  • · Replies 15 ·
Replies
15
Views
3K
Graduate Time Dilation Observed in Relative Frames: A Simple Question
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Time dilation on fast massive objects
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Study buddies for 'A First Course in General Relativity' by B. Schutz
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Question about affine connection definition, Weinberg's Gravitation
  • · Replies 9 ·
Replies
9
Views
2K
Graduate Time Dilation and Length Contraction
  • · Replies 14 ·
Replies
14
Views
4K
Graduate Explaining Hawking Radiation & Its Effect on Black Hole Mass
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Why Is the Norm of the Tangent Vector Constant in Geodesic Equations?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Question About World Lines and Asymptotes
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Distance role in simultaneity measurement
  • · Replies 42 ·
2
Replies
42
Views
5K
Graduate Maxwell's equations and spacetime
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Proper time of an accelerated frame in a external gravitational field
  • · Replies 31 ·
2
Replies
31
Views
4K
Graduate How does GR describe acceleration from non-gravitational forces?
  • · Replies 11 ·
Replies
11
Views
3K
Graduate A question about an alternate version of the Alcubierre Drive
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Gauss-Codacci equation space-like foliation
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Magnetic field moving faster than speed of light?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Understanding Rest Mass and Its Relation to Velocity in Special Relativity
  • · Replies 9 ·
Replies
9
Views
2K
Graduate Inhomogeneous Timefield in Classical Mechanics & Relativity
  • · Replies 1 ·
Replies
1
Views
1K
Graduate The physics meaning of the light cones tipping over
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Why Can't Flat Spacetime Connection Be Used in GR Covariant Derivative?
  • · Replies 23 ·
Replies
23
Views
3K
Graduate How Does the Ricci Tensor Affect Tensor Equations in Wald's Problem?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Gödel Metric Theses & Dissertations: 3 in Eng/Port, 1 in Portuguese
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Relativity Of Simultaneity Problem
  • · Replies 10 ·
Replies
10
Views
2K
Graduate Attempting to learn tensor calculus
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Is Clock Synchronization Throughout a Time-Like Congruence Transitive?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Incorporation of special relativity into general relativity
  • · Replies 27 ·
Replies
27
Views
5K
Graduate Curvature of Spacetime and its Impact on the Speed of Light
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Special relativity, light direction and wave source.
  • · Replies 40 ·
2
Replies
40
Views
5K
Graduate Does Time Slow Down for Objects Falling into a Black Hole at the Event Horizon?
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Defining negative energy of gravitational field
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Most proper time in Schwarzchild metric
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad What Happens to Mass as it Approaches the Speed of Light?
  • · Replies 9 ·
Replies
9
Views
6K
Graduate Is there a known parametrization for time dilation in the FLRW metric?
  • · Replies 36 ·
2
Replies
36
Views
6K
Graduate Twin paradox without acceleration - A different question
  • · Replies 14 ·
Replies
14
Views
3K
Graduate Understanding Euclidean Group E(n) Elements
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Sign conventions in general relativity
  • · Replies 7 ·
Replies
7
Views
5K
Graduate The Relativity of Motion: Is it Relative to the Object or the Rest Frame?
  • · Replies 52 ·
2
Replies
52
Views
7K
Graduate About the Starship Titanic and joules/accelerations.
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Gravitational pull on an object
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Tensors in GR and in mechanics
  • · Replies 38 ·
2
Replies
38
Views
4K
Graduate Orbit eq. holds inside BH? - MTW sec. 25
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Why does gravity cause acceleration in modern physics?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Space-Time Warpage and Kinetic Energy
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Mass is not the cause of gravity?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Understanding the Twin Paradox: A Quick Question Answered
  • · Replies 32 ·
2
Replies
32
Views
4K
Graduate How Does Relativistic Velocity Affect the Heat Capacity of an Ideal Gas?
  • · Replies 10 ·
Replies
10
Views
5K
Graduate Relativity and particle collision.
  • · Replies 7 ·
Replies
7
Views
2K
Graduate If all space-time already 'exists' then
  • · Replies 12 ·
Replies
12
Views
3K