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 Getting stuff out of a black hole using a second one
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Graduate High relativistic speed + entanglement
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Undergrad Beginner needs answers to basic questions about the speed of light
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Graduate Conceptual Question about the Change in Mass
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High School What Causes Gravity and Can Anyone Explain It to Me?
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Graduate Summation convention and index placement
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Graduate Connection between fabric of space, max. speed (of light) and time dilation
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Graduate The Present Moment in Spacetime?
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Graduate Where is a light year inside the earth?
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Graduate Photons, gravity, and the bending of light.
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Graduate Superman's Exercise: Lifting & Twirling a Rod 100K km Long
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Graduate Time Dilation and Gravity's Effect on Light
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Graduate Relativistic Energy of Antimatter
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Graduate What Is Time: Answers to Your Questions
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Graduate Adding momentum in STR and DSR?
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Graduate Time dilation and gravitational constant
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Graduate Can Special Relativity Theory Explain All Electromagnetic Phenomena?
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Graduate Modeling Path of Object in General Relativistic/Riemannian Geom
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Graduate Gravitation/general relativity (minus math)
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Graduate Bending of Space: What, Why, Where, When?
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Graduate Cosmological Constant and the Colapse of the Universe
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Graduate Centripetal thrust need at high-speed
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Graduate Is the Duel on the Moving Train Fair in Relativistic Terms?
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Undergrad Gravity: Attractive or Repulsive Force?
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Undergrad Coriolis effect and relativity
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Graduate So what's next for Einstein's Relativity?
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Graduate Philosophic comments on time in Relativity.
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Graduate Tensors versus differential forms
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Graduate Potential Energy and energy conservation in General Relativity
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Undergrad Gravity at a spot between the Earth and the Sun Summing to 0.
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Graduate Question Regarding Electromagnetic Fields in Special Relativity
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Graduate Is Time Truly a Uni-Dimensional Force?
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Graduate Gravitational blueshift and a Moving Mass
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Graduate Can general relativity derive from superstring theory?
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Graduate Can Massless Objects Really Travel Faster Than Light?
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Graduate Mass (both relativistic and rest) of a photon
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Graduate Energy & momentum in non-Minkowski coordinates
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Graduate Escape a Black Hole: Can It Be Done?
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Undergrad GRB 13.1 Billion Light Years From Earth: Explained
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Undergrad Two Black Holes Collide: The Result
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Graduate Why Does the Epsilon Delta Rule Simplify Expressions in Vector Calculus?
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Undergrad A copernicus/relativity question
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Graduate What is the significance of covariance in general relativity?
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Graduate Can gravitational time dilation be measured at different levels of the universe?
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Graduate Understanding 3D Space Bending in General Relativity
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Graduate Event Horizons / Time Dilation
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Graduate Raising indices in curved space
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Graduate Vanishing Ricci scalar always implies vacuum?
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Graduate Simultaneity - Albert Einstein and the Theory of Relativity
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Graduate Is the Speed of Light Truly Constant in General Relativity?
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Graduate How does gravity tend to propagate?
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Graduate Equivalence Principle & Gravitational Time Dilation
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Graduate Deriving Multiplication Factor for Geometrized Units: Help Needed!
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Graduate Christoffel symbols etc. via Lagrangian
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Graduate Why is the speed of light restricted?
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High School Is this an example of Relativity?
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Graduate Relative motion of C on C formula
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Graduate Physics Emergency: Two Trains Moving Away at 51% Light Speed
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Graduate Photon energies relative to movement, and relativistic mass Q's.
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High School Can't Believe It! Microsoft Word Refuses to Copy & Paste
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Graduate Understanding Frames of Reference in Relativity
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Graduate Does time dilation explain the constant measured speed of light?
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Graduate Centrifugal force around planets
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Graduate Earth's Velocity: Lorentz Factor & Reference Frame
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Graduate Why would an infinite universe tend to contract?
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Graduate Hypothetical spacecrafts traveling at light speed.
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Graduate Is the Speed of Light Truly Constant for All Observers?
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Graduate The interior space-time metric for a rotating spherical star
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Undergrad Twin Paradox: Explaining the Relativity of Aging
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Graduate Higgs Boson & Relativity: A Layman's Explanation
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Undergrad How Does Speed Affect Aging and Time Perception?
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Undergrad Speed of light and mass increase
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Graduate So what if I was in motion and tried to measure my own mass?
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Graduate Gravitational Time Dilation & Blueshift
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Graduate Finding High Curvature Solution in GR to Einstein's Field Equations
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Graduate Some questions,espacielly about time
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Graduate Flat vs Curved Spacetime: Are They Truly Equivalent?
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Undergrad Black Hole Thermodynamics Resources?
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Undergrad Where does the energy come from in different frames of reference?
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Graduate Large bodies of mass and their effects on apparent time
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Graduate Difference between Invariance and Covariance
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Graduate How is it that black holes are black?
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Graduate Questioning dark matter and Reinventing Gravity
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Graduate Why is the concept of proper acceleration important in General Relativity?
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Undergrad Why Does Density Increase When an Object Moves By?
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Graduate Evaporating BH and infalling observers - I am puzzed
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Clocks & Boxcars: Get Solution to Problem
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Graduate Refraction & Special Relativity: Can Photons Convert to Mass?
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Graduate Understanding the Limitations of Faster-than-Light Travel in Physics
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Graduate What Does the Gravitomagnetic B-Field Describe and What Are Its Units?
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Graduate Can Objects Travel Faster Than the Speed of Light?
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Graduate Gravitational lensing - 2 questions
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Graduate Understanding Time Dilation in Einstein's Special Theory of Relativity
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Graduate Simultaneous Paradox Explained - 65 Characters
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Graduate Schwarzschild's radius inquiry
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Graduate Speed of light, propellent incease in mass?
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Graduate What is the Fabric of Spacetime Made Of?
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Graduate Degrees of freedom in the curvature tensor
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Graduate Math of relativistic space travel
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Graduate What is the relationship between free falling bodies and spacetime geodesics?
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