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 How Can I Find a GR Problem Comparable to a QED Cross-Section Calculation?
  • · Replies 14 ·
Replies
14
Views
3K
Graduate Photons that orbit at the event horizon.
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Does space expansion theory obey relativity laws?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Special relativity and apparent, actual and synchronized positions
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Can information travel faster than light?
  • · Replies 64 ·
3
Replies
64
Views
15K
Graduate Are There Theories Challenging the Conservation of Energy Law?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Charged particle at relativistic velocity
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Einstein's resolution of the clock paradox
  • · Replies 32 ·
2
Replies
32
Views
8K
Why Does light have a speed limit.?
  • · Replies 37 ·
2
Replies
37
Views
15K
Graduate Distinguish Fictitious Force: Real Vs. Acceleration
  • · Replies 14 ·
Replies
14
Views
6K
Graduate Round trip (two way) speed of light
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Universal Reference point in time
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Expanding universe & relativity
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Orbiting Time Dilation: Who is Younger?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Speed of C in all frames of reference
  • · Replies 15 ·
Replies
15
Views
3K
Graduate Do All Masses Exhibit Schwarzschild Singularities?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Question About Time: Is Something You Shine Light At Younger?
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad How Long for a 186,000-Mile Rod to Move?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Understanding Simultaneity in Relativity: Common Doubts Addressed
  • · Replies 6 ·
Replies
6
Views
3K
Graduate A question on why Special Relativity holds
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Infinite Tensor: Does Coordinate System Matter?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Identifications between the model and the real world
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Gravitational force = inertial mass
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Proper Acceleration: Measurements & Definition
  • · Replies 10 ·
Replies
10
Views
6K
Graduate SR's Length Contraction and Time Dilation
  • · Replies 4 ·
Replies
4
Views
3K
Graduate How Does Mass Increase Affect Proton Velocity in a Cyclotron?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Spinning at the speed of light?
  • · Replies 1 ·
Replies
1
Views
5K
Graduate Understanding the Lorentz Time Contraction Equation
  • · Replies 18 ·
Replies
18
Views
4K
Graduate How Does Time Dilation Affect Measurements of Earth's Size from Satellites?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Understanding Light as a Particle and Wave
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Stress energy tensor of a rotating hoop
  • · Replies 14 ·
Replies
14
Views
7K
Graduate Trivial question about gravity affecting itself
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Is Simultaneity Absolute in the Train-Platform Thought Experiment?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Can mass go faster than the speed of light?
  • · Replies 63 ·
3
Replies
63
Views
10K
Graduate Is Kronecker Delta a Coordinate-Independent Identity Operator?
  • · Replies 6 ·
Replies
6
Views
8K
A question about the relativity
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Are Gravitons the Key to Understanding Gravity?
  • · Replies 35 ·
2
Replies
35
Views
6K
Graduate What scientific experiments have been invalidated by extinction phenomena?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad NASA's Stance on Warp Drive: Could FTL Travel Be Possible?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate What doesn't have gravitational mass?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate What is the Wedge Product and How is it Defined?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Frequency shift of light between observers in Schwarzschild space-time
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad (special) relativistic effects made clear in animation
  • · Replies 1 ·
Replies
1
Views
3K
Graduate How Does the Unruh Effect Differ Between Observers in Motion and at Rest?
  • · Replies 9 ·
Replies
9
Views
4K
Graduate What is the Classical Pendulum Paradox?
  • · Replies 28 ·
Replies
28
Views
8K
Graduate Converting Geometrized Units: The Role of G and c in Christoffel Symbols
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Electron Beam Speed in TV Picture Tubes: Explaining Special Relativity
  • · Replies 14 ·
Replies
14
Views
7K
Graduate Why Are Two Indices Used for the Generators of Lorentz and Poincare Groups?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Can Pulsed Gravity Waves Be Used for Faster-Than-Light Communication?
  • · Replies 9 ·
Replies
9
Views
4K
Graduate How Does Rotation Affect Gravity and Relativity Perception?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Time and Space: What Happens When Two Men Meet in Adjacent Rockets?
  • · Replies 40 ·
2
Replies
40
Views
7K
Graduate How often does mass effect space
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Relativistic mass and space-time curvature
  • · Replies 10 ·
Replies
10
Views
5K
Undergrad Traveling at 0.5c: Time Dilation & Length Contraction
  • · Replies 13 ·
Replies
13
Views
4K
High School Is the speed of light a constant
  • · Replies 32 ·
2
Replies
32
Views
6K
Graduate Is Light's Speed Limit Universal for All Massless Particles?
  • · Replies 13 ·
Replies
13
Views
3K
Graduate A Thought Experiment with Time Dilation
  • · Replies 2 ·
Replies
2
Views
6K
Graduate Understanding Black Holes: Questions About Event Horizon
  • · Replies 34 ·
2
Replies
34
Views
6K
Graduate Is Special Relativity Based on Human Error?
  • · Replies 24 ·
Replies
24
Views
4K
Graduate Would Gravity Waves Show Doppler Shift?
  • · Replies 10 ·
Replies
10
Views
5K
Graduate Is Spherically Symmetric Spacetime Algebraically Special?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Does the metric really represent intrinsic spacetime in plain English?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Thought Experiments: Will Spaceship B Move Immediately?
  • · Replies 16 ·
Replies
16
Views
5K
Graduate Calculating Angular Distance in SR
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Gravity Warps Space & Time: A cm Difference?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Uncovering the Mystery of Photons in Orbit: Factors Affecting Their Movement"
  • · Replies 23 ·
Replies
23
Views
5K
Graduate Traveling from Point A to Point B at the Speed of Light
  • · Replies 20 ·
Replies
20
Views
4K
Graduate How does the theory of relativity explain changes in mass and energy?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Tensors for Relativity Without Tears
  • · Replies 3 ·
Replies
3
Views
8K
Graduate Advance of Perihelion: Mercury's Formula & Approximations
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Calculating Homothetic Vector Fields
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Analogue of Lorentz transformation in General Relativity.
  • · Replies 3 ·
Replies
3
Views
5K
Graduate Whom do we consider as moving in special theory of relativity?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate A more interesting Pendulum Paradox
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Possible Analogy for Objects Moving at C
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Help with McMahon's Relativity
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad How Can V Draw Space Time Curve
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Space-Like Intervals: Can Events Effect Each Other?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate What is the meaning of topological black holes?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Warped Space or Gravitons: Which Theory Explains Gravity Better?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Unveiling the Non-Zero Components of Riemann Tensor for Schwarzschild Curvature
  • · Replies 3 ·
Replies
3
Views
7K
Graduate Is Space Infinitely Small and Large Without a Medium?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Can Time Dilation from Special Relativity Unlock Superpowers?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Photon Acceleration: Speed, Mass & Emission
  • · Replies 11 ·
Replies
11
Views
4K
Graduate What properties of space determine gravity velocity?
  • · Replies 9 ·
Replies
9
Views
5K
Undergrad Time Dilation: Einstein's Theory of Time-Shift
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Light speed in relation to the size of the universe
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Can Photons Travel the Same Path at Different Speeds?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate A weird spherically symmetric metric
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Negative Clock Readings: Compatible with Relativity?
  • · Replies 5 ·
Replies
5
Views
5K
Graduate Are Artificial Black Holes Created in the LHC Safe for Earth?
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Gravity & Massless Particles: Why Does it Affect Photons?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is there a gravitational equivalent to magnetism?
  • · Replies 12 ·
Replies
12
Views
5K
Graduate How Fast Does Gravity Travel to a Black Hole if the Sun Vanishes?
  • · Replies 12 ·
Replies
12
Views
4K
Undergrad Is motion relative to the size of an object
  • · Replies 18 ·
Replies
18
Views
5K
Graduate Little problem with group velocity
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Questions about acceleration in SR
  • · Replies 32 ·
2
Replies
32
Views
12K
Graduate Does Traveling at Light Speed Eliminate the Dimension of Time?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate 3 and 4 velocity and acceleration
  • · Replies 10 ·
Replies
10
Views
4K
Graduate In this scenario is faster then light speed possible?
  • · Replies 6 ·
Replies
6
Views
3K