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.
Undergrad Superluminal Messaging and Causality Paradox: Myth or Reality?
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Undergrad What is the Simpler Name for Conserved Property of Spacetime?
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Undergrad Trying to understand covariant tensor
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Undergrad Who is Moving Faster: Planet or Probe?
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Undergrad Formation of Bound Systems, Stars & Galaxies in General Relativity
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Undergrad Solving SR Invariance: Minkowski Metric, Poincare Transformation, Index Notation
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Undergrad Does the energy in cc also gravitate?
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Undergrad Deriving Schwartzschild Finding Mistake in Ricci Tensor
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Undergrad Can a Tensor be Represented by a 3-Dimensional Matrix?
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Undergrad Where do the missing minutes in a live feed from a spaceship to Mars go?
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Undergrad Index algebra questions / order of indices
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Undergrad Does the Michelson-Morley Experiment Solely Confirm Constant Light Speed?
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Undergrad Questions about binding energy
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Undergrad Does Special Relativity Apply to a Moving Clock?
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Undergrad How does parallel transportation relates to Rieman Manifold?
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Undergrad Dimensionless Time: Rindler & Minkowski Spacetime
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Undergrad Faster Than Light Travel: Wormhole Questions
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Undergrad Time travel thought experiment
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Undergrad Is Photon Mass Zero or Relativistic in Nature?
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Undergrad How would the sky look if ether drag hypothesis was true?
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Undergrad Traveling the Universe at the Speed of Light: Is it Possible?
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Undergrad Why isn't spacetime considered as true 4D?
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Undergrad Are many exercises in Schutz just too hard?
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Undergrad Free Fall vs Acceleration: Einstein's Theory Explained
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Undergrad If you traveled towards a planet at 0.9C
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Undergrad Can Hyperbolic Space be affecting our view of the universe?
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Undergrad Arrow of time and travel at the speed of light
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Undergrad Closing distances at rates greater than c
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Undergrad Is time rate getting faster with cosmic expansion?
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Undergrad Time dilation (something seemingly paradoxical)
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Undergrad Force on a Spherically-Uniform Radiator Moving Through Space
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Undergrad How Is Proper Acceleration Expressed in General Relativity?
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Undergrad Gravity Waves: Measure Spacetime Stretch with a Ruler
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Undergrad Which Is More Fundamental: Time or Distance?
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Undergrad Vacuum solutions in general relativity
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Undergrad Will the velocity of light be the same in all reference frames?
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Undergrad Detecting Earth in an Elevator: Thought Experiment
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Undergrad Special Relativity Approximation of Gravitation
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Undergrad Relation between Poincare matrix and electromagnetic field t
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Undergrad Ricci Tensor in Vacuum Inside Earth - Ideas Appreciated
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Undergrad Can c be set equal to 1 in certain systems of units?
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Undergrad Measuring Coordinates in Strong Gravity: Schwarzschild Metric
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Undergrad Time Dilation Between Astronaut A and Person B
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Undergrad How Does the Twin Paradox Illustrate Time Dilation in Special Relativity?
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Undergrad LIGO BH Merger & Black Hole Information Paradox
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Undergrad Light Acceleration: Does Light Really Accelerate?
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Undergrad Confusion about derivation for isotropic fluids
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Undergrad What Are the Modern Understandings of Time in Space-Time Theories?
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Undergrad Understanding Light Behavior in a Moving Train: Explained
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Undergrad Galilean transformation paradox help
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Undergrad Age Slower or Faster in Center of Earth? Time Dilation Explored
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Undergrad Reconsidering Gravity: The Illusion of a Fourth Force Revealed
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Undergrad Can an object accelerate at a constant pace forever?
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Undergrad How Does Length Contraction Affect Train Wheel Rotation at Near Light Speeds?
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Undergrad Does Space-Time Exist Without Energy?
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Undergrad Time Dilation Observation: What Does Earth Observe?
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Undergrad Clarifying SR Notation for Advanced Mechanics Course
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Undergrad What is the hierarchy of time: Δt, Δs, and Δτ?
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Undergrad Solving the Gravitational Field Equations
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Undergrad Should Einstein's Field Equations be modified for cosmology?
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Undergrad Is the Energy Stress Tensor of Dust Always Zero Inside a Moving Cloud?
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Undergrad About the Equivalence Principle
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Undergrad Quasars: What Metric Should You Use?
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Undergrad Relativistic doppler shifted blackbody color?
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Undergrad Vector to scalar potential, transformation of fields
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Undergrad Christoffel symbols of Schwarzschild metric with Lagrangian
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Undergrad At Speed of Light: Standing Still?
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Undergrad How to bridge the gap between these approaches to SR?
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Undergrad Volume vs Circumference of Massive Body
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Undergrad How Does Gravity Propagate Through Different Mediums and Energy Fields?
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Undergrad Can Snell's Law Be Derived by Passing to a Moving Frame?
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Undergrad What is the predicted location of gravity in orbiting objects?
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Undergrad Does the momentum of a photon change in a medium with varying speeds of light?
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Undergrad Deriving Φ of Light Around a Massive Body: Exploring Einstein's Equation
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Undergrad General Relativity vs Newtonian Weak Field: G Force?
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Undergrad Beyond the Speed of Light: Objects Beyond the Observable Universe
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Undergrad Moving Schwarzschild Black Hole
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Undergrad Can Heat Differential Generate Thrust?
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Undergrad Geodesic Equation: Lagrange Approximation Solution for Schwarzschild Metric
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Undergrad Solve SR 'Paradox': Find Flaw in Argument
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Undergrad Two black holes colliding - visual
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Undergrad Gravitational Waves: Propagation or Present?
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Undergrad Lorentz Transformations in the context of tensor analysis
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Undergrad Can the Size of the Event Horizon change faster than c?
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Undergrad Why are scalar fields Lorentz invariant?
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Undergrad Speed > C: Does Einstein's Theory Allow It?
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Undergrad Ricci tensor for Schwarzschild metric
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Undergrad Does a black hole have a maximum density?
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Undergrad Gravitational wave like a harmonic oscillator?
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Undergrad Active vs Passive Lorentz transformation
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Undergrad How to show that Electrodynamics is conformally invariant?
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Undergrad Gravity of a Baseball-Sized Universe: Reach to Infinity?
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Undergrad Lorentz derivation of length contraction in electrodynamics
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Undergrad Force Between Moving Charge Particles: Does Speed Matter?
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Undergrad A problem about momentum conservation.
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Undergrad Derivation of E.M. Stress Energy Tensor
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Undergrad Definition of stress-energy tensor
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Undergrad What Is Four-Force in Special Relativity?
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Undergrad What is a free vector and how does it relate to vectors in spacetime?
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Undergrad How Does Temperature Affect Time Dilation in Clocks?
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