Special and General Relativity Forum

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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's Effect on Space: Length Contraction & Light Speed
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Graduate Understanding Proper Time & Equations
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Undergrad Gravitational Time and Length Change, Looking for mass formula
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Graduate Question about Gravity and curvature of space time
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Graduate Time Dilation Notation in SR: Clarifying the Differential Form
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Graduate What Role Do Particles Play in Understanding Planck Scales in Quantum Gravity?
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Graduate What is the real impact of speed on time in the theory of time dilation?
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Graduate Does Relativity Support the Masslessness of Photons?
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Graduate Can Jensen Receive Same-Time Signals from Sensors?
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Graduate Help Make Math Connect in General Relativity
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Graduate Length Contraction of Electrons
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High School Why does time slow down and the train compress in relativity?
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Graduate GR vs SR: Reconciling Contravariant & Covariant Vector Components
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Graduate Raychoudhuri's Equation in Abstract Notation
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Undergrad Special Relativity Time Dilation Santa question
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Graduate General solution to the wave equation of electromagnetic field
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Graduate Observing black holes inside black holes
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Graduate Crossing the Event Horizon: Observing a Massive Black Hole
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Graduate Why does mass affect space time?
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Graduate Does an electron emit radiation when falling towards Earth?
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Undergrad Time Dilation: Layperson Question About Gravity's Effect on Time
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Graduate E=mc^2 Proof: Is it OK? - Adam Aulton
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Graduate Black Holes & Particle Collisions: Does Linear Momentum Transfer?
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Graduate Which Local Coordinates Are Best Suited for Different Problems and Applications?
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Graduate Einstein's Theory of Relativity
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Graduate Find Null Paths in Differentiable Manifolds Using One-Forms
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Graduate Doppler Effect and Conservation of Energy
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Graduate Topology of Relativity: Implications of Niels Bohr's Arguments
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Graduate The (non-?) flatness of a uniform gravitational field and the equivalence principle
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Undergrad Can Time Be a Dimension If It's Just a Human Construct?
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Graduate Non-rotational and rotational metric tensors
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Graduate Schwarzschild Spacetime: Ellipsoidal for Moving Observers?
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Graduate Time Dilation Effect on High-Speed Object Orbiting Massive Object
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Graduate STR removes the possibility of a common present
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Undergrad Speed of Light: What Frame of Reference?
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Graduate How Does the Observer's Perspective Resolve the Twin Paradox?
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Graduate Has a real clock corrections, with respect to an ideal clock?
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Graduate Math Applying Einstein's Theory of General Relativity
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Graduate Observing Kerr Singularity: What Would an Observer See?
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Graduate Mathematical Considerations of Spacetime in Classical Mechanics
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Graduate Is the Light Clock Calibration the Key to Understanding Relativity?
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Undergrad Time Dilation: Do Astronauts See Events on Earth Slower?
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Graduate What Happens During Accretion to a Primordial Black Hole?
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Graduate If you're traveling at the speed of light, then time stops
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Graduate Is the Relativity of Simultaneity Always True?
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High School Does space move? What is space?
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Undergrad Is All Motion Truly Relative to Space?
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Undergrad Around the Earth Clock: Does Special Relativity Hold True?
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Graduate Gravitational Effects of Gyros Near a Massive Object
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Graduate Length contraction in diagonal motion and something strange?
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Graduate So, what exactly do we mean by flat space?
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Graduate Notational clash in index notation?
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Graduate Maximum angular momentum for charged black hole?
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Graduate What would GRT look like if negative masses existed?
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Graduate Coordinate Translation Vectors & Covectors
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Graduate Accretion in Extreme Conditions: PBHs & More
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Graduate Cosmology Chapter Mistake: Reflections on Relativity
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Graduate Mapping Space with Clocks: Deduce Distances/Observers w/ Constant Light Speed
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Graduate Length contraction and time dilation in spacetime
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Graduate MTW Ch7: Choosing Lagrangian for Scalar Potential
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Graduate Existence of affine parameters of null geodesics
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Graduate Velocity of Accelerated Observer in SR: Understanding the Paradox
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Graduate Understanding the Role of Tensor Calculus in General Relativity
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Graduate Piezoelectric Effect: Length Contraction & Dipole Moment
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Undergrad Relativity & Spacetime: Interval Explained
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Graduate Relativity & Distance-Time: Is It True?
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Graduate Partial derivative with respect to metric tensor
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Undergrad Is there mass if there is no gravity?
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Graduate Is Quantum Space-Time a Real Possibility?
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Graduate Solve Relativistic Momentum PROBLEM - Extra Factor of u Explained
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Graduate Could Lorentz Violations Occur in Vacuum Deep Inside Celestial Bodies?
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Graduate Measuring Light Frequency: Does Newton's Law Apply?
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Graduate Why no absolute derivative in this example of geodesic deviation?
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Graduate How Does Relativity Affect Time Measurement in Thought Experiments?
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Graduate Aging Without Movement: How Long Would We Live?
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Graduate Can light exist without space time?
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Undergrad Not a scientist, just wondering -- Shining a laser pointer into space
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Graduate Does the Sagnac Effect Indicate Rotation in Non-Rotating Gyroscope Frames?
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Graduate Black Hole Hawking Radiation: Frame-Dependent Virtual Particles
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Graduate How Can a Photon Oscillate with a Frequency If Time Stops at Light Speed?
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Graduate Space-Time Projection on Space
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Graduate Help with Exercise 7.1 - MTW Chapter 6
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Graduate Uncovering the Reality of Space-Time: Separating Fact from Fiction
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Graduate Can You See Your Reflection While Traveling at Light Speed?
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Graduate Speed of light and planck length
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Graduate Variation of the Christoffel Symbols
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Graduate Is there a minimum speed in the universe besides the maximum speed of light?
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Graduate Poincare Transformations: Parametrization-Independent
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Graduate Stress and pressure as gravitational source
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Graduate Time Dilation, Twin paradox etc.
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Graduate Understanding Minkowski Space Metrics: The Sign Reversal Mystery Explained
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Graduate Newtonian and GR Friedman equation
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Graduate How does one get time dilation, length contraction, and E=mc^2 from spacetime metric?
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Graduate How do you derive relativistic tensors in an orthonormal basis?
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Graduate Geodesics - Some help, please.
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Graduate Time dilation on the surface of a planet and escape velocity time dilation
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High School Explaining E=mc²: Simplified for 12-Year-Olds
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Graduate Perception of faster than light travel?
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Graduate Do all elements of the stress energy tensor really have the same units?
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Graduate Deriving the Expression for Total Energy: Understanding E = gamma mc^2
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