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.
Undergrad Potential energy contributes to the mass
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Time an Illusion? Einstein Explains Why According to Relativity
  • · Replies 17 ·
Replies
17
Views
5K
High School What is the exact definition of mass?
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Here's the way to go faster than light
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Reaching the Speed of Light: Can We Achieve C?
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Understand Mach's Principle: What does it Mean?
  • · Replies 31 ·
2
Replies
31
Views
6K
Graduate Understanding Gravitational Waves & Self-Taught GR
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Can We Really Time Travel by Exceeding the Speed of Light?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Lightspeed: does the definition of time make it constant?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate How to show something transforms as a covector?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Photon Mass: Is Student Learning Misleading?
  • · Replies 49 ·
2
Replies
49
Views
9K
Check Out This Link - A Puzzling Argument
  • · Replies 13 ·
Replies
13
Views
3K
High School Why is light's speed the fastest speed?
  • · Replies 10 ·
Replies
10
Views
12K
Graduate Man Running on a Train: Clocks and Velocity
  • · Replies 24 ·
Replies
24
Views
7K
Graduate Is Lorentz Contraction Real in the Frame of Reference of a Moving Object?
  • · Replies 11 ·
Replies
11
Views
3K
Graduate About the geometry of general relativity
  • · Replies 7 ·
Replies
7
Views
5K
Undergrad Uncovering the Mystery: Slowing Time on a Plane Explained
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Can objects catch up with their own photons?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Anisotropy of the speed of light?
  • · Replies 12 ·
Replies
12
Views
5K
Graduate Curved Space Model: Explaining Gravity & Magnetic Force
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad C vs. Fiber Optics: Speed Comparison and Myths Debunked
  • · Replies 15 ·
Replies
15
Views
5K
Graduate How can magnetic field be a relativistic phenomenon?
  • · Replies 8 ·
Replies
8
Views
7K
Graduate Slowing Photons: A Look at Light Speed Rockets & Measuring Slower Speeds
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Two speed of light experiments at different altitudes
  • · Replies 10 ·
Replies
10
Views
5K
Graduate Final Theory and Orbital Mechanics
  • · Replies 13 ·
Replies
13
Views
3K
Undergrad Do Photons Have Mass and Kinetic Energy?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate What will happen to time if we travel away from Earth at 0.9999c?
  • · Replies 31 ·
2
Replies
31
Views
4K
Graduate Can two galaxies receded from one another faster than C?
  • · Replies 35 ·
2
Replies
35
Views
7K
Graduate Consistency of the speed of light
  • · Replies 431 ·
15
Replies
431
Views
57K
Graduate How Quickly Does Gravity Propagate?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Palatini Formalism generalizes GR to include degenerate metric?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Gravitational Equivalent of Magnetic Field Measured in Lab
  • · Replies 20 ·
Replies
20
Views
4K
Undergrad How does a body escape its gravitational field?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Relative Speeds and the Limit of Light
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Derieving relativistic electrodynamics equations
  • · Replies 17 ·
Replies
17
Views
4K
Graduate Can Muon Decay Experiments Disprove the Existence of an Absolute Time Frame?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is Relativity an Illusion or Reality?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate What is the Flaw of General Relativity Regarding Uniform Gravitational Fields?
  • · Replies 85 ·
3
Replies
85
Views
12K
Graduate Teaching Special Relativity: Balancing Theory, History, and Experimentation
  • · Replies 29 ·
Replies
29
Views
8K
Graduate Velocity of Light in Accelerating Spaceship & Inertial Frames in GR
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Gravity & Geodesics: How the Earth Maximizes Proper Time
  • · Replies 17 ·
Replies
17
Views
4K
Undergrad The Science Behind Time Dilation: How Does Time Stop at the Speed of Light?
  • · Replies 87 ·
3
Replies
87
Views
24K
Graduate Could the expansion of space impact the distance between the Earth and the sun?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Discover the Method to Derive E=mc^2 - A Comprehensive Guide
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Geodesics in schwarzschild solution
  • · Replies 2 ·
Replies
2
Views
8K
Graduate Gravitational Field of a Spinning Mass: Exploring the Math
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Perspective of Massless objects
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Weight of Hot Body: Balance in Thermal Equilibrium?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad What about this Final Theory thing?
  • · Replies 1 ·
Replies
1
Views
2K
High School Time Is Relative: What Does It Mean?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Topology of de Sitter and black hole
  • · Replies 1 ·
Replies
1
Views
3K
Graduate GR & 3rd Law: A Thought Experiment
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Aetherists and the doppler effect
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Does Space Expand Faster Than Light Beyond Our Observable Universe?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Questions about the speed of light
  • · Replies 13 ·
Replies
13
Views
5K
Graduate Special Relativity and Thermal Physics finals
  • · Replies 31 ·
2
Replies
31
Views
4K
Graduate Time difference: light emitted vs observed
  • · Replies 7 ·
Replies
7
Views
8K
Graduate Can Space Travel Faster Than the Speed of Light?
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Time and Space dilation and contraction
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Question about cause of curvature of spacetime
  • · Replies 14 ·
Replies
14
Views
4K
Graduate Charge Dilation: Mass/Energy Increase, Charge Constant
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Curved spacetime is described by a manifold
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Questions on Spacetime Curve/Gravity
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Lorentz- and Galileian-transformation
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Do Antitachyons Travel Slower Than Light?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Bending of Light around a Star
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Photon passing through a black hole?
  • · Replies 24 ·
Replies
24
Views
10K
Graduate Why is the Angle Between Timelike Vectors Given by g(X,Y)?
  • · Replies 17 ·
Replies
17
Views
5K
Graduate Searching for "Perihelium Precession Problem" Derivation in General Relativity
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Potential energy and GR, something doesn't add up
  • · Replies 6 ·
Replies
6
Views
2K
Graduate If SR Wrong: Difficulties, Paradoxes, Instantaneous Signals
  • · Replies 10 ·
Replies
10
Views
2K
Jerry Noble and His Theory: Unveiling a Mystery
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Circular Twin Paradox: Non-Linear Acceleration and Age Differences Explained
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Why is light traveling through the ether not just at speed c?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Detecting Space Time: Gravitational Radiation
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Einstein's E=mc^2: How Did He Reach His Equation?
  • · Replies 17 ·
Replies
17
Views
4K
Graduate Lorentz transform as a complex function
  • · Replies 6 ·
Replies
6
Views
6K
Graduate Highschool student interested in cosmology
  • · Replies 9 ·
Replies
9
Views
3K
Graduate What Are the Energy and Wavelength Limitations of Light?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Space-Time Geometry: Consequences of Minkowski's Relativity
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Black Hole: Seeing Inside & Out
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Why Is the Position 4-Vector Contravariant While the Del Operator Is Covariant?
  • · Replies 13 ·
Replies
13
Views
3K
Graduate How does Einstein's theory explain gravity's effect on Earth's curvature?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate How Does Weak Coupling Between Matter and Space-Time Affect Cosmic Structures?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Is the speed of light measurement dependent on local clocks?
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Antigravity like soluctions of Einstein equations
  • · Replies 3 ·
Replies
3
Views
5K
Undergrad The Significance of C in Einstein's Famous Equation E=MC^2
  • · Replies 11 ·
Replies
11
Views
5K
Graduate Understanding Kinetic Energy in Special Relativity
  • · Replies 8 ·
Replies
8
Views
3K
Graduate A variation on the twin paradox
  • · Replies 133 ·
5
Replies
133
Views
15K
Graduate A positronium atom decays into two photons c+c=c
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Is the Sagnac effect a valid argument against Relativity?
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Relativistic Dynamics: Conservation Laws Necessary?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Space Travel: Time Dilation at Near Light Speed Explained
  • · Replies 15 ·
Replies
15
Views
4K
Graduate How do Orbits behave as orbital velocities become significantly relatavistic
  • · Replies 8 ·
Replies
8
Views
3K
High School Einstein's Childhood: The Roots of SR?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate GR, SR and the Sagnac effect question
  • · Replies 6 ·
Replies
6
Views
4K
Graduate What is the constant velocity curve of an accelerating spaceship?
  • · Replies 23 ·
Replies
23
Views
6K
Graduate Magnetism & Relativity: Uncovering the Link Through Free Resources
  • · Replies 2 ·
Replies
2
Views
5K
High School Kumar's Explanation of the Twin Paradox
  • · Replies 10 ·
Replies
10
Views
3K
Graduate What Angular Velocity is Required for Relativistic Effects?
  • · Replies 1 ·
Replies
1
Views
2K