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 Div Curl: Black Hole Edge Explored
  • · Replies 7 ·
Replies
7
Views
3K
Graduate No SR time dilation without Lorentz contraction
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Confusion between simultanety and time dialation
  • · Replies 10 ·
Replies
10
Views
2K
Graduate What if light clock experiment was done on top of train?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Overview of the topic and current topics/unsolved problems
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Orthonormal basis in fermi coordinates
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Is Relativity Broken Due to Simultaneity and Time Dilation?
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Gravitational Field & Reference Frames
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Beginner's Minkowski diagram / space-time interval question
  • · Replies 6 ·
Replies
6
Views
8K
Graduate Time dilation has a direct corelation in the production of gravity
  • · Replies 4 ·
Replies
4
Views
2K
Graduate What Would Happen to Astronaut A in a Rotating Spacecraft Access Tube?
  • · Replies 26 ·
Replies
26
Views
8K
Graduate What came first Gravity or Curvature
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Does Thomas Precession violate angular momentum conservation?
  • · Replies 43 ·
2
Replies
43
Views
15K
Graduate Thermodynamics of Spacetime: The Einstein Equation of State?
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Does General Relativity Allow for Swimming in Space-Time?
  • · Replies 11 ·
Replies
11
Views
5K
Graduate Applications of realitivty once we can travel at near c
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Experience Zero-Gravity at Earth's Core
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Tesnsors and Units Consistancy
  • · Replies 10 ·
Replies
10
Views
2K
Graduate Published definitions of rapidity
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Question on linearity of Lorentz transformations
  • · Replies 66 ·
3
Replies
66
Views
12K
Undergrad Simulating relativity in a velocity verlet algorithm
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Bell's spaceship paradox - reversed
  • · Replies 3 ·
Replies
3
Views
4K
Graduate How can two objects colliding and merging have a bigger mass?
  • · Replies 9 ·
Replies
9
Views
2K
Graduate What's in your differential geometry toolbox?
  • · Replies 12 ·
Replies
12
Views
7K
Graduate Is there any derivation of length contraction through proper lenght?
  • · Replies 11 ·
Replies
11
Views
3K
Undergrad What does it mean if a transformation is 'linear'?
  • · Replies 6 ·
Replies
6
Views
5K
Graduate Black Hole; Gravity & Speed Within Questions
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Light speed relative to accelerating & const vel source
  • · Replies 10 ·
Replies
10
Views
4K
Undergrad Alpha centuri .4 light year relative to who?
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Killing vectors for Anti desitter space in 3+1
  • · Replies 1 ·
Replies
1
Views
6K
Graduate Einstein's Postulates & Momentum in 3D: Is it Possible?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad What is the Twin Paradox and How Does Space Affect Time?
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Why is the speed of light erm the speed of light?
  • · Replies 12 ·
Replies
12
Views
3K
Graduate How does mass know that space is curved?
  • · Replies 15 ·
Replies
15
Views
3K
Graduate Deriving Lorentz Metric and E=m
  • · Replies 10 ·
Replies
10
Views
2K
Graduate How does the GR field equation reduce to Newton's law of gravity?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Using the Einstein Equation to Solve Problems in GR
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Rubber sheet analogy - density change
  • · Replies 3 ·
Replies
3
Views
3K
Graduate How is acceleration in relativity measured?
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad Some Questions on Time Dilation.
  • · Replies 41 ·
2
Replies
41
Views
6K
Graduate Twin 1 goes on a rocket flys to pluto at .99c
  • · Replies 20 ·
Replies
20
Views
3K
Graduate Is equivalence principal really true?
  • · Replies 19 ·
Replies
19
Views
3K
Graduate How much energy is needed to create 3 protons and an antiproton from 2 protons?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Is There a Perpetual Motion Machine Hidden in the Capacitor Paradox?
  • · Replies 52 ·
2
Replies
52
Views
16K
Graduate Lorentz Transformation: Finding d(gamma)/dt
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Calculating Earth's Increased Mass with Velocity Change: A Scientific Analysis
  • · Replies 42 ·
2
Replies
42
Views
7K
Graduate (gamma)ma=F-[F.(beta)]beta How derive this?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Dangers of FTL Space Drives: AIAA/NASA Report Analysis
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Why cant special reletivity and Newtonian theory of gravity agree?
  • · Replies 21 ·
Replies
21
Views
6K
Graduate Confusions over general relitivity
  • · Replies 10 ·
Replies
10
Views
3K
Graduate What Happens to Mass Inside a Black Hole?
  • · Replies 4 ·
Replies
4
Views
3K
High School Perception vs. Reality-relativity of time
  • · Replies 4 ·
Replies
4
Views
5K
Graduate Apparent paradox: e=mc^2 violates conservation of energy?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Light move away from the emitter at 1.00 c ?
  • · Replies 18 ·
Replies
18
Views
4K
Graduate .5 c train relativity question
  • · Replies 9 ·
Replies
9
Views
2K
Graduate Minimum Travel Time: Is It Possible?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Velocity Addition: Lead Photon Movement?
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad What is the reason for Gravity ?
  • · Replies 22 ·
Replies
22
Views
6K
Graduate Can gravitational blue shift happen without gravitational time dilation?
  • · Replies 5 ·
Replies
5
Views
5K
Graduate Does J go to inf when v goes to c?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Question about 'uniform' pseudo-field felt by accelerating observer
  • · Replies 18 ·
Replies
18
Views
4K
High School Ether and how it was disproved.
  • · Replies 23 ·
Replies
23
Views
23K
Graduate Does Gravity Exist or Is It Just a Bend in Space-Time?
  • · Replies 32 ·
2
Replies
32
Views
8K
Graduate Einstein on the relativity of distance.
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Getting the Ricci and metric tensor from T ?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Can a Photon Exist in Multiple Places Due to the Problem of Simultaneity?
  • · Replies 9 ·
Replies
9
Views
2K
Graduate Understanding the Metric Tensor in General Relativity
  • · Replies 14 ·
Replies
14
Views
4K
Graduate Frequent flyer miles for the travelling twin
  • · Replies 13 ·
Replies
13
Views
3K
Graduate Cosmological Constant and Planck Length in relativity
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Lengths perpendicular to relative motion are unchanged
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Relativistic Angular Momentum?
  • · Replies 1 ·
Replies
1
Views
4K
The World's First Time Machine: A Documentary and a Mystery
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad When does Newton's Gravitation fail us?
  • · Replies 16 ·
Replies
16
Views
7K
Graduate Lead Photon Motion: Is Distance Constant?
  • · Replies 14 ·
Replies
14
Views
3K
Graduate Question's About the Speed of Light
  • · Replies 7 ·
Replies
7
Views
4K
Graduate How Does Traveling at .9999c Affect Human Time Perception?
  • · Replies 29 ·
Replies
29
Views
4K
Graduate What sort of vector is this?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Ampere's Law: Questions from E.M. Purcell's Textbook
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Superluminal transfer of information via gravity
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Electric is Magnetic - Relativistically speaking
  • · Replies 10 ·
Replies
10
Views
2K
Graduate Lorentz Generators, Srednicki eq. 2.13
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Black Hole Horizon Information
  • · Replies 6 ·
Replies
6
Views
5K
Graduate Crossing event horizon and Hawking radiation
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Object Blueshift: Where Do Extra Vibrations Come From?
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad Question about the effect of c on light
  • · Replies 11 ·
Replies
11
Views
2K
Graduate Superluminal velocities & redshift
  • · Replies 15 ·
Replies
15
Views
4K
Graduate SR and classical Doppler shift
  • · Replies 35 ·
2
Replies
35
Views
6K
Undergrad Relativity & Gravity: Questions for a 16-Year-Old
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Time Dilation, who is aging slower?
  • · Replies 10 ·
Replies
10
Views
5K
Graduate Local Inertial Frame: Understanding Riemann Curvature & Metric Tensor
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad Understanding Gravitational Potential in Different Reference Frames
  • · Replies 19 ·
Replies
19
Views
4K
Graduate The Truth About Time Travel: Separating Fact from Fiction
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Unifying Gravity & GR: A Contradiction in Physics?
  • · Replies 24 ·
Replies
24
Views
5K
Graduate Relativistic Mass Increase and Its Dependence on Relative Speed
  • · Replies 20 ·
Replies
20
Views
3K
Graduate Does time speed up as space expands
  • · Replies 15 ·
Replies
15
Views
6K
Graduate Speed increases mass, which increases gravity?
  • · Replies 3 ·
Replies
3
Views
5K
Graduate The visible universe and the speed of light
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Earths rotation and special relativity
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Problem with Rubber and Metal Ball Analogy
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Relativity Theory and Quantum Theory
  • · Replies 7 ·
Replies
7
Views
3K