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 Variation of Einstein-Hilbert action
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Graduate Can physical 3D space exist at all?
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Graduate After finding the Einstein Tensor
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What would a time machine look like?
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Graduate Does matter warp space time in the form of minimal surfaces?
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Graduate Speed of light as an impossibility
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Graduate Uncovering the Equivalence of Energy and Mass: Visualizing E=MC2
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Graduate Is Gravity Truly a Force or Merely a Curvature of Space-Time?
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Graduate Relativistic motion of a magnetic sail
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Graduate Synchronising Clocks: Will They Stay in Sync?
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Graduate Is there inertial mass-gravity equivalece principle with photons?
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Graduate How Do Tidal Forces Affect Objects Near Black Holes?
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Graduate Could GR generalized to non-integer dimension?
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Graduate A question on velocity addition
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Graduate Clarification on length contraction
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Graduate Why Does Light Appear to Fall in a Gravitational Field?
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Graduate Parametric Equation of a Sphere in General relativity
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Graduate How Does Gravitational Time Dilation Affect Light Emitted from a Black Hole?
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High School Why Time Can Be Negative: Understanding the Past & Present
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Graduate Foliating Spacetime: Understanding the Curves and Metrics
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Graduate Is Einstein's Train Thought Experiment an Example of Backward Causation?
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Graduate Diffeomorphism Invariance in Einstein's Gravitation Theory Explained
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Graduate What are Null Coordinates and Their Role in Spacetime?
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Graduate The Alcubierre Drive and Negative Energy
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Einsteins General Relativity Papers- Original
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Graduate Does the CMB allow special rest frames to be defined?
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Undergrad Question on gravitational time dilation
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Graduate Stress energy tensor interpretation
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Graduate Einstein's Theory of Gravity Waves: Speed of Light
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Graduate How Do Photon Journeys Affect Light Clock Synchronization in Relativity?
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Graduate Moving light bulb sphere of photons
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Graduate How Does the Relativistic Doppler Effect Alter Light Frequencies?
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Graduate Black Holes and Gravitational Waves
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Graduate Quantum mechanics vs. postulates of special relativity
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Graduate D'Inverno page 226 (tidal force on freely falling particle )
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Graduate GR - time dialation at center of a planet
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Graduate General Relativity vs. gravitons/force
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Graduate The difference between a metric and the metric tensor
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Undergrad Do atomic clocks prove time dilation and length contraction?
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Graduate What Keeps A Black Hole Going?
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Graduate Can the gravitational field create its own gravity?
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Graduate Is Lorentz Ether Theory a Viable Alternative to General Relativity?
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Graduate Is there the possibility of absolute time
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Undergrad My little theory: what would happen?
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Undergrad Pass light through helium-3 it slows it down?
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Time and Motion: An Unbreakable Connection?
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Graduate How Does Lightbeam Motion Influence Our Perception of Time Dilation?
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Graduate Does time exist apart from matter?
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Graduate Time difference in relation to elevation
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Graduate Composition of Lorentz pure rotations
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Undergrad Length Contraction: Light & Spaceships
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Graduate Finding Orthonormal Bases for Metrics with Non-Zero Off-Diagonal Components
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Graduate What is the Relationship Between Energy and Time in Different Frames?
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Graduate Rethinking Time: Is Our Perception of Time Just an Illusion?
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Graduate Rotating rigid sphere stress-energy tensor
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Graduate What Are the Key Concepts Behind Light Clocks and Light Velocity?
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A good video to help one understand time dilation
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Graduate Help: Mode Decomposition and Retarded Feilds and Green's functions
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Graduate Curvature using exterior differential forms
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Graduate Relativistic version of 2nd law of thermodynamics
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Graduate How do we know that the stress-energy is a tensor?
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Graduate Can a civilization gather information from inside the event horizon?
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Graduate Modificaition in pole and barn paradox
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Graduate Time dilation: most recent & precise experiments
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Graduate Does time essentially stop if you could travel a C?
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Undergrad How do you tell you are not in inertial frame of reference
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Undergrad Question reguarding gravitational pull
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Graduate How can you create a geodesic path using the metric and initial velocity?
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Graduate Lorentz Transforms + Relativity of Simultaneity
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Graduate Does space warp reduce the space volume?
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High School What Are the Standard Wavelengths of Light and Their Variations?
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Graduate Alternate Representations of Lorentz Generators Mμν
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Undergrad Basic question about speed of light situation
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Graduate Explaining E=mc^2: What Does It Mean Physically?
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Graduate Constantly accelerating object and its proper time
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Graduate Proper time of an accelerating particle
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Graduate Endless Acceleration: Is Hyperbolic Reduction the Answer?
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Graduate How exactly does energy become mass?
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Graduate Special Relativity: Ultimate Speed Limit
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Graduate Is Length Contraction Real or Just an Illusion at High Speeds?
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Graduate The source of gravitational red shift
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Graduate Understanding Black Hole Gravity: Mechanisms and Mysteries
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Graduate Gravity & Pressure: How Moving Particles Generate More Gravity?
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Graduate Using Einstein field equation
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Undergrad Why is c squared in Einstein's equations?
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Graduate The doppler effect on light (red and blue shifts)
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Graduate A baffling quote from Einstein, badly requiring explanation
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Graduate Hypothetically If you were in a spaceship going 0.99999999999 c and you tried
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Graduate Defining Mass and Time: A Scientific Exploration
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Graduate Tell me what I'm doing wrong (velocity addition in 3+1 dimensions)
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Graduate Yau's result for the Ricci curvature on Kahler manifold
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Graduate The speed of light and gravity
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Graduate Can Relativistic Speeds Affect the Calculation of a System's Center of Mass?
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Graduate Mass and the Speed of Light: Equations and Measurements
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Graduate What is the relationship between momentum and mass in the context of light?
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Graduate Disk Rotating Near the Speed of Light
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Graduate Gravity & Time: Why Does a Powerful Gravitational Field Affect Time?
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Graduate Why do we have to make assumptions in science?
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Graduate Why does an object fall from rest in a gravitational field?
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Graduate Is Energy Transmitted Faster than Light through Electro-Weak Fields?
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