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 Gravity: Thoughts on Earth's Center Point
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Geodesics in metric geometry and affine
  • · Replies 7 ·
Replies
7
Views
5K
Graduate Coordinate transformation and choice of a suitable coordinate system.
  • · Replies 2 ·
Replies
2
Views
7K
Graduate Why Do Black Hole Models Assume Singularities as Facts?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Does acceleration cause time dilation?
  • · Replies 85 ·
3
Replies
85
Views
30K
Undergrad Is There a Flaw in the Michelson-Morley Experiment?
  • · Replies 69 ·
3
Replies
69
Views
13K
Graduate Absolute Zero and time travel?
  • · Replies 14 ·
Replies
14
Views
7K
Graduate On GR and Interstellar exploration
  • · Replies 4 ·
Replies
4
Views
2K
High School Does Taking a Step Forward Affect Age Difference in Time Dilation?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Is the Velocity of Light Truly Constant Regardless of Your Motion?
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Re: time-space Why the paradoxes of time? (CONFUSED)
  • · Replies 10 ·
Replies
10
Views
4K
Undergrad Can Inert Gases Exhibit Electric Activity in Our Atmosphere?
  • · Replies 28 ·
Replies
28
Views
9K
Undergrad Question about Acceleration and Relativity
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Understanding Time Dilation in Special Relativity
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Uncovering the Truth: The Michaelson-Morley Experiment and Earth's Motion
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Rest length in general relativity
  • · Replies 124 ·
5
Replies
124
Views
21K
Graduate Are Space and Time Inseparable Aspects of Our Universe?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate On The Ether Concept In Physics
  • · Replies 5 ·
Replies
5
Views
9K
Graduate Relative Moving Charge: Electric vs Magnetic Field
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Measuring Light Speed & Slowing it Down with Matter
  • · Replies 13 ·
Replies
13
Views
3K
Graduate The General Principle of Relativity
  • · Replies 19 ·
Replies
19
Views
4K
Graduate Does Traveling at Light Speed Freeze Time?
  • · Replies 31 ·
2
Replies
31
Views
5K
Graduate Could we say that velocity of light does not remain constant in time,
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad Train A and B's Speed of Light Encounter: A Physics Question
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Was Einstein's Pursuit of Unified Field Theory Fruitful in His Final Years?
  • · Replies 11 ·
Replies
11
Views
7K
Undergrad Velocity of light remain costant in a gravitational field?
  • · Replies 15 ·
Replies
15
Views
3K
Graduate Speed of light - with observer experiencing gravity
  • · Replies 2 ·
Replies
2
Views
2K
Graduate New Relativity FAQ: Understanding Mass in Special Relativity
  • · Replies 20 ·
Replies
20
Views
5K
Graduate Gravity Red Shift: Can it Happen?
  • · Replies 6 ·
Replies
6
Views
6K
Graduate Group theory and Spacetime symmetries
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Length of Meter Stick Near Event Horizon of Black Hole
  • · Replies 12 ·
Replies
12
Views
3K
Undergrad Just a simple question about the speed of light and c^2.
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Who coined the term relativistic mass
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Curved space-time and dimensions
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Pushing in the wrong direction
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Worldline of photon in comoving coordinates.
  • · Replies 18 ·
Replies
18
Views
6K
Graduate Energy-momentum tensor for a scalar field (sign problem)
  • · Replies 2 ·
Replies
2
Views
9K
Graduate Wave Function in Lorent tranform
  • · Replies 7 ·
Replies
7
Views
2K
Graduate The very significant and positive result of the MM Exp
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Time dilation and the pioneer spacecraft
  • · Replies 1 ·
Replies
1
Views
2K
Graduate If tachyons existes, does they obey the transfomation relations
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Is There a Non-QED Derivation of E=pc?
  • · Replies 18 ·
Replies
18
Views
6K
Can't Find Matter-Energy Equivalence Video - Help Please
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Why Does the Ship's Twin Observe Earth's Clock Jump in the Twin Paradox?
  • · Replies 77 ·
3
Replies
77
Views
13K
Graduate How Does Relativistic Motion Affect Star Brightness?
  • · Replies 32 ·
2
Replies
32
Views
7K
Graduate Wouldn’t time dilation govern a speed limit?
  • · Replies 15 ·
Replies
15
Views
4K
Graduate Charge of Black Holes: Measurability & Effects
  • · Replies 27 ·
Replies
27
Views
6K
Graduate Temperature and special relativity
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Help with relativity [relativistic rocket]
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Is this tensor operation valid?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Can motion affect spectral signatures in a hydrogen-filled cube?
  • · Replies 13 ·
Replies
13
Views
3K
  • Poll Poll
Graduate Gravitons or Warped Space-Time?
  • · Replies 40 ·
2
Replies
40
Views
13K
Graduate Why not fewer visible stars in far away galaxies?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Special relativity treatment of gravity?
  • · Replies 25 ·
Replies
25
Views
8K
Graduate How much does Earth's time dilation decrease with distance from the surface?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Can objects 'fall faster than c' in a gravity field?
  • · Replies 22 ·
Replies
22
Views
6K
Graduate Why Are Physicists Interested in AdS Black Holes Over de Sitter Black Holes?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Accelerating universe = conservation of energy?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Question on Einstein's Simple derivation of Lorentz Transformation.
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Acceleration or gravitational time dilation the same?
  • · Replies 35 ·
2
Replies
35
Views
10K
Graduate How Do We Measure Distance to Stars and Galaxies?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Gravity: Speed of Light & Black Holes
  • · Replies 68 ·
3
Replies
68
Views
14K
Graduate Absolute simultaneity with Einstein synchronized clocks?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Solving Curvature Tensor of Paraboloid Problem
  • · Replies 7 ·
Replies
7
Views
6K
Graduate Forumulation of field equations
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Geodesics and stretched strings
  • · Replies 29 ·
Replies
29
Views
5K
Graduate Understanding the Nature of Gravity and its Relationship to Energy Creation
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Drawing Penrose diagram figures
  • · Replies 1 ·
Replies
1
Views
5K
Graduate Is Special Relativity Incomplete Without Considering Intrinsic Momentum?
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Special Theory and String Theory.
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Are relativistic effects real ?
  • · Replies 71 ·
3
Replies
71
Views
11K
Graduate Clarification on the consistency of light speed
  • · Replies 25 ·
Replies
25
Views
5K
Undergrad Einsteins Genius Derivation: E=mc^2 and the Concept of Light as Matter
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Question on Time Dilation Experiment
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Doppler-shift/hubbles-law implies big bang/universe age?
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Time, Temp & Movement: Amitai's Question
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Why is the Doppler shift expression sometimes reversed?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Movement & Spacetime: Point A to B Difference
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Invarients for 4-vector quantites.
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Relative Time Question: Train Experiment and Conflicting Views
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Vacuum Solutions: Are They Always Divergence Free?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Is Spacetime Flat in Uniform Gravitational Fields and Acceleration?
  • · Replies 27 ·
Replies
27
Views
5K
Graduate Is inertial mass of gas the same as its rest mass
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Is There an Absolute Time When Events Occur?
  • · Replies 32 ·
2
Replies
32
Views
6K
Graduate Determined c in S v. Result of the Michelson_Morley Exp.
  • · Replies 4 ·
Replies
4
Views
2K
Graduate What Physical Meaning Underlies the Non-Divergence of the Einstein Tensor?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Does Light Curving Around the Sun Prove It Has Weight?
  • · Replies 4 ·
Replies
4
Views
11K
Graduate Can light have a phase velocity faster than c?
  • · Replies 4 ·
Replies
4
Views
19K
Graduate Help me through a simple SR problem
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Lengths and times relative to S' and S
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Light Speed and Newton's Equation F=ma: Explanation
  • · Replies 56 ·
2
Replies
56
Views
17K
Graduate The Michelson-Morley experiment
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Erenkov Radiation: Charged Particles Explained
  • · Replies 10 ·
Replies
10
Views
3K
High School Did Einstein guess the time-dilation equation?
  • · Replies 11 ·
Replies
11
Views
6K
Graduate Question about the rotating disc
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Strange Paradox: Rockets' Clocks Syncing
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Actual and observed time dialation
  • · Replies 8 ·
Replies
8
Views
4K
Graduate What kind of math is needed to understand relativity
  • · Replies 3 ·
Replies
3
Views
5K
Graduate Solve Simultaneity Problem with Alice & Bob
  • · Replies 58 ·
2
Replies
58
Views
10K
Graduate In what direction does length contraction occur?
  • · Replies 7 ·
Replies
7
Views
4K