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 Does Absolute Zero Influence Our Understanding of Time and Movement?
  • · Replies 22 ·
Replies
22
Views
6K
Graduate How does mass affect time near the Great Pyramid of Giza?
  • · Replies 2 ·
Replies
2
Views
9K
Graduate Tensor transformation under reflections
  • · Replies 10 ·
Replies
10
Views
6K
Graduate Derivation of Proper Time, Speed, and Acceleration in SR
  • · Replies 14 ·
Replies
14
Views
4K
Undergrad Gravity at Centre of Earth: Infinite?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate General relativity with infinite speed of light?
  • · Replies 38 ·
2
Replies
38
Views
6K
Graduate A red herring is a debating tactic that seeks to divert an opponent
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Lorentz Transformation: Coefficients a_{nm}(u) & Inverse Relations
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Constancy of metric tensor components as a test of curvature
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad Is Faster Than Light Travel Possible Through Black Holes?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Derivation of proper time in acceleration in SR
  • · Replies 100 ·
4
Replies
100
Views
17K
Graduate Does Gravitational Time Dilation imply mass change?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Local Lorentz Frame: Blandford & Thorne's Applications of Classical Physics
  • · Replies 26 ·
Replies
26
Views
7K
High School Wondering e=mc^2 is derived from what equations
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Does Extreme Gravity Alter the Value of Pi?
  • · Replies 14 ·
Replies
14
Views
4K
High School Length Contraction Explained Simply
  • · Replies 14 ·
Replies
14
Views
4K
Undergrad Relativity: light in train with person in it
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Currents in the Universe: Understanding Their Effects
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Understanding Time Dilation: Confusions and Questions Answered
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Derivation of Hyperbolic Representation from Lorentz/Minkowski equations in SR
  • · Replies 43 ·
2
Replies
43
Views
11K
Graduate Modification of Law of Reflection from a (moving) mirror in Special Relativity
  • · Replies 5 ·
Replies
5
Views
10K
Can anyone tell a good quotation about GR?
  • · Replies 14 ·
Replies
14
Views
3K
High School Time Dilation Debate: Arguments For and Against
  • · Replies 23 ·
Replies
23
Views
5K
Graduate Light Bending in Accelerating Elevators
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Basic question about the speed of light
  • · Replies 19 ·
Replies
19
Views
4K
Graduate Voyager probes and time dilation
  • · Replies 11 ·
Replies
11
Views
5K
Graduate Is Time the Fifth Dimension in Spacetime?
  • · Replies 25 ·
Replies
25
Views
6K
Graduate Gravity Wave Detectors: Prepared for Detection & Active Time
  • · Replies 1 ·
Replies
1
Views
2K
Conservapedia - Counterexamples in relativity
  • · Replies 17 ·
Replies
17
Views
5K
Graduate What is the relationship between matter and spacetime curvature?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Spaceship arriving at a planet
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Frame of Reference: Does Stuff in the Frame Matter?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Could the linear velocity at an infinite distance exceed the speed of light?
  • · Replies 24 ·
Replies
24
Views
5K
Graduate Reasons why lightspeed travel is impossible
  • · Replies 38 ·
2
Replies
38
Views
9K
High School Is E=mc^2 Fully Proven or Still Up for Debate?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Gravitational waves are also redshifted?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Einstein on Space: Understanding the Concept of Space in Relativity Theory
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Can we use the Andromeda Paradox?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate What Are Riemann Normal Coordinates in General Relativity?
  • · Replies 13 ·
Replies
13
Views
7K
Graduate What are the properties required for spacetime to be a Lorentzian manifold?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Multiple clock thought experiment
  • · Replies 14 ·
Replies
14
Views
3K
Graduate Understanding Mach's Principle: 2 Objects & Zero Observation
  • · Replies 7 ·
Replies
7
Views
3K
Graduate BRS: Those Damnable Paradoxes I. Overview
  • · Replies 19 ·
Replies
19
Views
2K
Graduate Differing definitions of expansion, shear, and vorticity
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Structure of a gravitational wave?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Length Contraction and Relativity: Muon Velocity & Gamma Factor
  • · Replies 20 ·
Replies
20
Views
4K
Graduate Acceleration and Time Dilation
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Energy vs wavelength for a photon in GR
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Negative squares using the space time interval invariance
  • · Replies 11 ·
Replies
11
Views
5K
Graduate Lorentz vs space time interval
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Can GR accurately predict the speed of gravity waves as c?
  • · Replies 7 ·
Replies
7
Views
5K
Graduate Basic question about the nature of light and time
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Question about alpha, the fine structure constant
  • · Replies 7 ·
Replies
7
Views
3K
Graduate BRS: Some Recent GTR-Related arXiv Eprints
  • · Replies 4 ·
Replies
4
Views
2K
High School Is Time Travel Possible and How Can We Achieve It?
  • · Replies 46 ·
2
Replies
46
Views
9K
Graduate Special Relativity: Going from A to B on a helix
  • · Replies 41 ·
2
Replies
41
Views
6K
Undergrad Speed of Light: Time and Motion Explained
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Conservation of energy predict invariance of elastic collisions?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Spin Counter: Can a train's length really dilate?
  • · Replies 26 ·
Replies
26
Views
4K
Graduate Information transfer that is faster than c?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Can Relativity and Gravity Coexist?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Does Spin Affect Gravity at the Particle Level?
  • · Replies 6 ·
Replies
6
Views
6K
Graduate Counting independent components
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Speed of light in Non-Inertial reference frame?
  • · Replies 3 ·
Replies
3
Views
15K
Graduate I understand time dilation with light clocks, but
  • · Replies 15 ·
Replies
15
Views
5K
Undergrad Beginner's questions on time dilation
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Tipler Cylinders: Solving for Light Cone Tilt Angle
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Calculating Apparent Speeds of Objects at Light Speed
  • · Replies 3 ·
Replies
3
Views
2K
Graduate What Causes Time Dilation in Accelerated Systems Compared to Inertial Systems?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Special relativity on a circle
  • · Replies 1 ·
Replies
1
Views
3K
Graduate What are the main paradoxes in Special Relativity?
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Center of Mass in Special Relativity: Observer Dependence?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Two travelers both in Inertial Frames
  • · Replies 16 ·
Replies
16
Views
3K
Undergrad A question that has been plaguing me
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Why is the speed of light fixed while everything else is relative?
  • · Replies 16 ·
Replies
16
Views
4K
Graduate Real Inertial Motion: A Discussion of Frame Independence
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Unraveling the Mysteries of Muon Experiments
  • · Replies 1 ·
Replies
1
Views
2K
High School Experimental data in relativity
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Is Time-Reversal Symmetry Valid in Curved Spacetime?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Magnetic Monopoles and Gravity
  • · Replies 16 ·
Replies
16
Views
4K
Graduate Speed of light & streaming video
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Momentum of photon close the sun or black hole
  • · Replies 37 ·
2
Replies
37
Views
8K
Undergrad Quick question - has length contraction actually been experimentally confirmed?
  • · Replies 49 ·
2
Replies
49
Views
11K
Graduate Conservation laws in GR: a messy picture?
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Relativity query - communication with an object at light speed
  • · Replies 20 ·
Replies
20
Views
4K
Graduate Confused about time slowing down
  • · Replies 34 ·
2
Replies
34
Views
5K
Undergrad Paradox: Who Will Be the Oldest After Travelling Near Light Speed?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Spacetime / Time Dilation Question
  • · Replies 24 ·
Replies
24
Views
5K
Graduate How should we convey curved space-time?
  • · Replies 23 ·
Replies
23
Views
25K
Graduate Planck relation, relativistic doppler effect, and relativistic mass
  • · Replies 4 ·
Replies
4
Views
6K
Graduate Alternative form of Minkowski metric?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Reference Frames in Simultaneity
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Travelling greater than speed of light
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Questions about lights constant and photons
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Is Time Constant? Why We Assume It Is
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Potentials, connections and curvature
  • · Replies 14 ·
Replies
14
Views
3K
Graduate Understanding GR Vacuum Solutions: Explaining the Role of Matter in Curvature
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Gravity (over extremely long distances)
  • · Replies 57 ·
2
Replies
57
Views
14K
Graduate Question about length contraction (geometric way)
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Energy loss of a photon moving against gravity
  • · Replies 55 ·
2
Replies
55
Views
13K