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 Identifying Manifolds with Different Co-ordinates: Easy Solutions
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Undergrad Find GR Equation: Collapsing Orbit & Gravitational Wave
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Undergrad GR: Can Units Tell You if Quantity is Covariant or Contravariant?
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High School What Is the Proper Time of the CMB and Its Implications?
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High School Time like spacetime interval, proper time, and time dilation
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Graduate Kerr Metric Time Dilation Formula: Deriving Absolute Form
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Undergrad How Does the Twin Paradox Apply to Light and Sound Waves?
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Graduate Gravitational field of an infinite flat slab
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High School What Happens to Time and Space Near a Black Hole's Event Horizon?
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Graduate Finding Killing Vectors of FLRW Metric: Simple Equation?
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Undergrad C in a Vacuum: Evidence of Constant?
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Undergrad Boost Generators: Physical Meaning & Observable Quantities
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Undergrad Leading Clocks Lag: Twin Paradox Explained
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Graduate Non-Linear Theory: Summation Meaningful in Einstein Gravitation?
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Undergrad Speed of EM & Mech Waves: Maxwell's Law Explained
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Undergrad Twin Paradox: Spacetime Physics Ch.4 & 202 Year Difference
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High School I have a conceptual question about relative mass
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Undergrad Configuring Laws of Motion: Static/Dynamic
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Undergrad Could spacetime be non-orientable?
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Undergrad Summation notation and general relativity derivatives
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Undergrad Solving Proca Lagrangian w/ Extra Operator: Find Laws of Motion
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Undergrad Does Time Slow Down in a Deep Osmium Room?
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Undergrad Laws of Motion for New Lagrangian: Partial Differential Equations
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Undergrad Compute Length Contraction: Is ##l=1## a Possible Model?
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High School Helium Balloon: Explaining Special Relativity Effects
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Undergrad Lorentz Ether Theory: History & Explanation
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Undergrad Riemann Curvature: Understanding Parallel Transport on 1D Rings
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Undergrad Metric: Proper Space vs Coordinate Space
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High School Can Relativistic Effects Alter Thermodynamic Processes in Experiments?
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Graduate Kerr Metric: Removing Singularity via Coordinate Transformation
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Undergrad If energy is relative, is the rest mass also relative?
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Graduate The gravitational constant measured by the smallest object
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Undergrad Are Tidal Forces Curvature of Space?
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High School What Happens If You Become Completely Still in Space?
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High School How does special relativity apply to the rocket equation?
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Undergrad Special Theory of Relativity & Conservation of Mass
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Undergrad General relativity - covariant superconductivity, Meissner effect
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Undergrad Calculating the Area of an RN Event Horizon with Specific Heat Formula
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Undergrad Michelson-Morley Experiment: Objection Explained
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Undergrad Why is Scalar Massless Wave Equation Conformally Invariant?
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High School Find Numerical Relativity Source Code
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Undergrad Can a distant object behind a cosmic string appear as a double image?
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High School Can Energy Really Be Converted to Matter in Everyday Life?
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Undergrad Linear & Rotational Motion: Speed of Tip in Lab Frame
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High School Thought Experiment : Try and get Alice to "0%" the Speed of light
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High School Conservation Laws & General Relativity: Understanding Energy
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Undergrad Components of *J in Kerr geometry
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High School How Can We Derive the Relativistic Rocket Equation?
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Graduate How can I take the derivative?
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Graduate Obtaining the Orbit equation (Effective Potential) from the Newtonian metric
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Graduate Exploring Epsilon Simultaneity: Advantages and Applications
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Undergrad Is mass the source of spacetime?
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High School Relative speed of two oppositely directed light beams
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High School Travel Times & Distances: Twin Paradox & Alpha Centauri
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Graduate Solving Linearized EFE for Newtonian Potential Under Lorentz Gauge
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Undergrad Rate of Time/Mass: Is There a Constant?
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Graduate Find SEM Tensor from Lagrangian of Temporal Variable
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Graduate Asymptotic Flatness: Minkowski Spacetime & Galaxy Scale
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Undergrad Asymptotically Flat Schwarzschild Metric
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Undergrad Computing Ricci Tensor Coefficients w/ Tetrad Formalism
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Graduate Deriving Essential Quantities from Metric Tensor for GR Calculations
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Undergrad One way speed of light measurement
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Graduate Differential Geometry Class: Suggestions Welcome
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Undergrad Understanding Pseudo-Angles in Minkowski Space: A Geometric Interpretation
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Graduate De-Sitter Spacetime: Is it Homogeneous & Isotropic?
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Undergrad Explaining Sagnac vs. SRT Violation & Reconciling Lorentz Transform
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Graduate Hypersurface Definition Confusion in General Relativity
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Undergrad To derive an equation of black hole thermodynamics
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Undergrad Weak Gravitational Field & Wave Eq. - Analyzing Effects on Massless Scalar Field
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Undergrad Conformally related metrics have the same null geodesics
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Undergrad Precession of a spherical top in orbit around a rotating star
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Undergrad Length contraction and time dilation
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Undergrad The energy of a closed universe is zero
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High School Twins Paradox Thought Exp: What Happens When Reunited?
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Undergrad Ray tracing in the movie Interstellar
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High School V=dx/dt (relative velocity between two inertial observers)
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Undergrad Recession Velocity near Cosmological Boundary: Hubble's Law?
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High School How to relate relativistic kinetic energy and momentum
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Undergrad A bit confused with this question about the Penrose process
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Undergrad Can a Black Hole be Destroyed by Electron Beam?
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High School Speed of light during acceleration
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Undergrad Is time really moving backwards?
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Graduate Does gravitational time dilation imply spacetime curvature?
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Graduate Induced Metric for Riemann Hypersurface in Euclidean Signature
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Graduate Tensorial calculations - Best computational Language
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High School Can We Create a Warp Drive for Light? - Josh's Curiousity
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Graduate Deriving Acceleration in Gravity from E = mc^2
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Undergrad Time-Dependent Lagrangian Leads to Time Dilation?
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Insights The Gravity of Laser Light: How Does It Impact Acceleration?
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High School Realistic Window View from a Starship: Gravity, Rotation, and Blue/Red Shifting
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High School Misuse of Velocity Addition: Troubleshooting
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High School Force between 2 Point Charges Across Frames
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High School Spinning Black Hole Drags Space-Time: What Causes Friction?
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Undergrad Gravity Wave Propagation: Negative Energy Pulse?
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Undergrad Sun Disappearance: Impact on Earth's Path
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High School Experimental evidence for effective mass increasing with speed
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Undergrad Co-rotating electric potential for KN solution
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Undergrad Hyperbolic Time Chamber: Is Time Dilation Theoretically Possible?
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High School Measuring Time: Identifying Slower Clock w/ Two Identical Clocks
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High School Newton's Constant in Higher Dim. Spacetimes, Velocity of Light=1
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