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 Relative energy of a black hole.
  • · Replies 112 ·
4
Replies
112
Views
17K
Graduate The Role of Gravitation in Particle Physics: Beyond the Everyday Interactions
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Entering supermassive black holes
  • · Replies 29 ·
Replies
29
Views
7K
Graduate Cosmological Redshift: Equation & Universe History
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Momentums and Curve Our Space is clearly a little weirder than expected
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Confused by proof of Lorentz properties from invariance of interval
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Proper definition of world lines in Galilean and Minkowskian spacetime
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What do I do once the Field Equations have been assembled
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Does a Yank of 100 Newton Meters Affect a 5 Kg Rod?
  • · Replies 14 ·
Replies
14
Views
3K
Graduate Relativity and The Stopped Clock Paradox
  • · Replies 76 ·
3
Replies
76
Views
12K
Undergrad Question on movement speeds relative to an observer.
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Please Explain to me this thought experiment
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Galilean principle of relativity
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Precise instrument (w,h,l) after length contraction still working?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Can flat spacetime model Black Holes?
  • · Replies 14 ·
Replies
14
Views
3K
Undergrad GeekGeodetic Effect Explained: Proving Relativity
  • · Replies 12 ·
Replies
12
Views
6K
Graduate Generators for Lorentz transformations
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Potential Energy of Length Contraction
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What is the true nature of motion?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Coordinate and proper time animation
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Windmills and the Speed of Light
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Time dilation from length contraction
  • · Replies 14 ·
Replies
14
Views
3K
Graduate Confusion about synchronization
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Calculating Relativistic Velocity from Work and Mass
  • · Replies 8 ·
Replies
8
Views
4K
Graduate What are your best arguments for time dilation, so duration is different ?
  • · Replies 40 ·
2
Replies
40
Views
7K
Graduate Why I doubt the generality of Gauss' law: A Gaussian sphere 1 light year across
  • · Replies 57 ·
2
Replies
57
Views
10K
Graduate Classification of events and curves in Minkowskian spacetime
  • · Replies 13 ·
Replies
13
Views
3K
Graduate Motion of light in a gravitational field
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Are Christoffel symbols measurable?
  • · Replies 142 ·
5
Replies
142
Views
21K
Graduate What Is the Estimated Entropy of the Final Crunch in a Closed Universe?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Time as Parameter in QM vs Coordinate in QFT
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Infinite Slab of Mass: Black Hole Effects
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad Coordinate time and proper time.
  • · Replies 26 ·
Replies
26
Views
24K
Graduate Can the Speed of Light be derived?
  • · Replies 9 ·
Replies
9
Views
5K
Undergrad Variation in speed of light - how does it accelerate after being slowed down?
  • · Replies 8 ·
Replies
8
Views
5K
Graduate Does Spacetime Always Remember Events?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How does GR handle metric transition for a spherical mass shell?
  • · Replies 202 ·
7
Replies
202
Views
31K
Graduate Is there a relativistic version of the work-energy theorem?
  • · Replies 4 ·
Replies
4
Views
7K
Undergrad When is it ok to use non-relativistic equations?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Length contraction near the speed of light
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Language in which Einstein intuitively discovered GR
  • · Replies 6 ·
Replies
6
Views
3K
Graduate What's Wrong With Black Hole Thermodynamics?
  • · Replies 48 ·
2
Replies
48
Views
9K
Graduate What is general relativity in one irreducible simple sentence?
  • · Replies 13 ·
Replies
13
Views
5K
Graduate Massive observers with light speed when crossing the event horizon
  • · Replies 16 ·
Replies
16
Views
5K
Graduate Relative Black Holes: Can Particles See Universes of Them?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate One way speed of light and simultaneity
  • · Replies 14 ·
Replies
14
Views
3K
Graduate Writing Tensor Equations in Matrix Form
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Lapse function and spacetime splicing
  • · Replies 29 ·
Replies
29
Views
7K
Graduate Twin Paradox Explained: Long Outbound & Short Inbound Leg
  • · Replies 24 ·
Replies
24
Views
4K
Undergrad Using Mathematica for 4 vectors and etc.
  • · Replies 5 ·
Replies
5
Views
5K
Graduate When Does the Future Stop Being Mapped Out in Special Relativity?
  • · Replies 47 ·
2
Replies
47
Views
9K
Graduate Is your information destroyed when you reach the singularity
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Time, simultaneity, black holes & entropy
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Time flow on other planets or galaxies
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Escaping a Black Hole's Event Horizon
  • · Replies 5 ·
Replies
5
Views
3K
Why isnt a bh singularity a reference point?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Explaining time dilation from length contraction easier
  • · Replies 9 ·
Replies
9
Views
4K
Graduate BREAKING NEWS: Error Undoes Faster-Than-Light Neutrino Results
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Relativity of Simultaneity & C Invariance Doubts
  • · Replies 2 ·
Replies
2
Views
2K
Graduate A simple resource about tensors
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Anomalous Precession of Mercury's Orbit: Facts & Theories
  • · Replies 12 ·
Replies
12
Views
4K
Graduate Is there a direct relationship between time and space in special relativity?
  • · Replies 17 ·
Replies
17
Views
3K
Graduate Can Quantum Mechanics Explain True Randomness?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Multiple images in gravitaional lensing
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Status of relativistic 2-body problem
  • · Replies 21 ·
Replies
21
Views
5K
Graduate Time Contraction in Lorentz Transforms?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad What forces do act upon light?
  • · Replies 20 ·
Replies
20
Views
8K
Graduate Varying Intensity of Gravitational Field and Equivalence
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How does my special relativity simulator work?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate What happens when you fall into a black hole?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Relativity: what's wrong with this logic?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Is General Relativity Really About Physics on Curved Spacetimes?
  • · Replies 36 ·
2
Replies
36
Views
6K
Undergrad Black hole lifespan, what happens in the end?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate The Relativity Of Simultaneity.
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Is the order of the events reversed here?
  • · Replies 15 ·
Replies
15
Views
3K
Graduate Does g increase asymptotically near a black hole singularity or event horizon?
  • · Replies 14 ·
Replies
14
Views
5K
Undergrad Is General Relativity More Accurate for Planetary Calculations?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Does gravity attract instantaneously?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Original problem with maxwell's that led to special relativity
  • · Replies 3 ·
Replies
3
Views
2K
Graduate GR: Why does space HAVE to contract in a gravitational well?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Can reality be defined other than at a point?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Time-retarded E-field and Gaussian surface integral
  • · Replies 14 ·
Replies
14
Views
4K
Graduate Einstein Tensor; What is wrong here?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate What were the first technologie to be based on SR and GR?
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Wouldn't The Time Being Relative Be A Product Of Space Curvature Near Mass
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Time Moves Forward for Obvious Reason?
  • · Replies 81 ·
3
Replies
81
Views
15K
Graduate Local Reference Frame: Explaining What It Is?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Question about rearranging formula in Brian Cox's Why Does E=MC2
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Difference between relativistic doppler effect and classical one?
  • · Replies 2 ·
Replies
2
Views
6K
Graduate What happens when two length contracted ladders move through the same garage?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate What is linearized GR and how does it relate to Riemannian geometry?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Does light recalibrate its speed?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Unraveling the Mystery of Photon Mass and Its Interplay with Gravity
  • · Replies 37 ·
2
Replies
37
Views
11K
Undergrad Speed & Direction of wave
  • · Replies 31 ·
2
Replies
31
Views
7K
Graduate Rest frame through a force field possible (time dilation) ?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate LT of the magnetic vector potential when the scalar potential=0
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Max/Min Time Dilation: What is the Scale?
  • · Replies 34 ·
2
Replies
34
Views
5K
Graduate Time Dilation & Contraction: Conflicting Clocks
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Schwarzschild's solution, classical (local) GR tests and general covariance
  • · Replies 6 ·
Replies
6
Views
3K
High School Is 'straightness' relative to earths curviture?
  • · Replies 19 ·
Replies
19
Views
4K