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 Coordinate change to remove asymptotic geodesic?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Alternative way to calculate the special relativistic time dilation factor
  • · Replies 28 ·
Replies
28
Views
7K
Graduate Galilean Transformation Limitations: Explained w/ Example
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Problem Landau relativity special
  • · Replies 3 ·
Replies
3
Views
3K
Graduate What is the need for KK-theories (and similar)
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Geometric representation of two-forms.
  • · Replies 9 ·
Replies
9
Views
2K
Graduate Observing Light Flash from 0.9999c Moving Body
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Questioning speed of light and infinite mass
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Inertial frame of reference of light speed (And beyond)
  • · Replies 12 ·
Replies
12
Views
3K
Graduate GPS & Relativity: Position Error Lower Than 38000 Feet?
  • · Replies 60 ·
3
Replies
60
Views
14K
Graduate Question about viewpoints in relativity
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Time dilation and relative velocity
  • · Replies 19 ·
Replies
19
Views
4K
Graduate Symmetry assumption in derivation of SR
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Is this a legitimate derivation of the changing of mass?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate On the Reissner-Nordstrom Metric
  • · Replies 22 ·
Replies
22
Views
7K
Graduate Family of nested spheres in Schwarzschild spacetime
  • · Replies 1 ·
Replies
1
Views
2K
High School Real life examples of simultaneity
  • · Replies 115 ·
4
Replies
115
Views
23K
Graduate Mass-less particles? How can that be?
  • · Replies 30 ·
2
Replies
30
Views
6K
Graduate How does SR apply to rotating bodies?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate I don't understnad how to get the 4-volume element for a Minkowksi space
  • · Replies 4 ·
Replies
4
Views
6K
Graduate Spinning mass & spatial distortion
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Einstein Field equations for dummies
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Spinning Mass & Spatial distortion
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Photon, Lagrange Point, Binary Black Hole
  • · Replies 7 ·
Replies
7
Views
6K
Graduate Lorentz Transformations and Photon Delay
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Is there a spacetime which is timelike and spacelike complete but null
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Speed of light measurements using different light source.
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Can Moving a Hydrogen Atom by an Angstrom Alter Its Mass?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate What is the relativistic cause of planetary orbital rotation.
  • · Replies 16 ·
Replies
16
Views
5K
Graduate Which principle would be violated?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Understanding the Trace of the SEM Tensor
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Einstein holding Maxwell's equations above Newton's equations
  • · Replies 26 ·
Replies
26
Views
12K
Graduate Could GPS satellites be used to detect gravitational waves?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Equivalence principle and gravitational neutron diffraction
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Why Is the tt Component of the Metric Interpreted Differently in This Paper?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Perturbative Construction of General Relativity
  • · Replies 1 ·
Replies
1
Views
2K
High School Do not understand why 'c' is squared in Einstein's equation
  • · Replies 7 ·
Replies
7
Views
4K
Graduate How Do Black Holes Form from Space-Time Curvature?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Did Einstein Have Multiple Definitions of Time?
  • · Replies 28 ·
Replies
28
Views
26K
Graduate Maxwell's Equations in a Medium
  • · Replies 71 ·
3
Replies
71
Views
17K
Undergrad Why doesn't light get absorbed?
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Do Photons Have Mass and Momentum?
  • · Replies 170 ·
6
Replies
170
Views
25K
High School Why Does Gravity Pull Objects Together?
  • · Replies 75 ·
3
Replies
75
Views
53K
Graduate A question regarding Special Relativity.
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Can the Universe Travel Faster Than Light and Time Travel?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Can matter and anti matter manipulation be used for replication of
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Can two stationary electrons generate a magnetic field?
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad What does time mean at t=1/infinity?
  • · Replies 8 ·
Replies
8
Views
4K
Graduate The crossing of two light waves, a point standing still ?
  • · Replies 16 ·
Replies
16
Views
4K
High School Is Time Travel Possible with Speed of Light?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Is There Research on Spacetime Elasticity and Its Relationship with Mass?
  • · Replies 7 ·
Replies
7
Views
6K
Undergrad Does Traveling Affect Age? A Thought Experiment
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Can Neutrinos Travel Faster thyan Light?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Fourier transform in Minkowski space
  • · Replies 6 ·
Replies
6
Views
8K
Graduate The Schwartzschild solution - why no Stress Tensor?
  • · Replies 51 ·
2
Replies
51
Views
9K
Graduate Communicating Through an Einstein-Rosen Bridge Without Causality Violation
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Potential energy contributes more to gravity
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Question on Time Dilation for Traveling Observers
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Why Does Lorentz Transformation Not Yield the General Form of Four-Acceleration?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Verifying Time Dilation, Length Contraction & Space-Time Curvature
  • · Replies 27 ·
Replies
27
Views
5K
Graduate Questions about photons. Their interaction with time and their life-cycle.
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Speed of Light and Relativity of simultaneity
  • · Replies 10 ·
Replies
10
Views
5K
Graduate What Are the Limits of Acceleration and Energy in Relativity?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Michelson-Morley experiment, a pointless exercise when taking SR into account ?
  • · Replies 11 ·
Replies
11
Views
3K
Graduate What is Waving in Light Waves?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Question on The Dichotomy Paradox
  • · Replies 3 ·
Replies
3
Views
3K
Graduate I have a crude understanding of dark energy and the relativist universe.
  • · Replies 16 ·
Replies
16
Views
3K
Undergrad Energy of photon never becomes zero
  • · Replies 10 ·
Replies
10
Views
4K
Undergrad Can the change in energy change the mass?
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Time Dilation: Two Observers, Different Times
  • · Replies 6 ·
Replies
6
Views
2K
Graduate My understanding of Space, Time and spacetime
  • · Replies 61 ·
3
Replies
61
Views
10K
Graduate Newton's 3rd Law & Acceleration Paradox
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Conservation of momentum question
  • · Replies 8 ·
Replies
8
Views
3K
Graduate How can a metric connection have torsion?
  • · Replies 11 ·
Replies
11
Views
5K
Graduate If energy/matter deforms spacetime in three dimensions
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Does Earth's Rotation and Revolution Affect Time and Speed?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Q: A&B moving in opposite directions @ 0.6 c comparison with sound.
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Derivation of expansion scalar for FRW spacetime - weird observation
  • · Replies 53 ·
2
Replies
53
Views
10K
Graduate Distance light travels in a relatively moving frame?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate What is it that sets the speed limit of light?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Confusion over Einstein summation convention and metric tensors.
  • · Replies 24 ·
Replies
24
Views
5K
Graduate Center of mass of a system of two photons
  • · Replies 2 ·
Replies
2
Views
5K
Graduate What do I do with these christoffel symbols?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Combining SR and the Broglie Wavelength equations: Are they cumulative?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Can motion be detected without external reference in a moving container?
  • · Replies 52 ·
2
Replies
52
Views
12K
Undergrad Why is light speed constant in all reference frames?
  • · Replies 39 ·
2
Replies
39
Views
26K
Graduate How does curved space create gravity?
  • · Replies 7 ·
Replies
7
Views
5K
Graduate How did Albert Einstein figure this out?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Help understanding a SR equation
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Issues entering a spacetime in GRTensor II
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Does Time Flow for a Photon in the Context of Time-Space?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Beginner question about special relativity
  • · Replies 3 ·
Replies
3
Views
2K
Graduate A mind experiment about speed and time
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Mass is Energy Moving Faster then Light?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate In the back of the popular Relativity book
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Time dilation thought experiment clarification
  • · Replies 9 ·
Replies
9
Views
4K
Graduate How Does Newton's F=ma Relate to the Geodesic Equation in General Relativity?
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Radius of Ring Singularity in Kerr Black Hole
  • · Replies 17 ·
Replies
17
Views
9K
Graduate Global observations from Rindler frame
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Worldline congruence and general covariance
  • · Replies 145 ·
5
Replies
145
Views
19K