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.
High School Explanation of light speed limit
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High School Time Dilation: Does Observer See Your Time Speed Up?
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Undergrad Coordinate System for Minkowskian Spacetime Relative to Event
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Undergrad General relativistic comparison to Newtonian physics
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Undergrad What is the confusion surrounding time as a coordinate in general relativity?
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Graduate Essential Difference Between Crossable & Non-Crossable Event Horizons
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Undergrad Stress-Energy of Star Collapsing into Black Hole
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Graduate Fluid Flow Symmetry: Showing $\pi_b G^b$ is Constant
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Graduate Thermality & Nonthermality of Radiation in Curved Spacetimes
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Undergrad "Testing the black-hole area law with GW150914"
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Undergrad Calculating Time Elapsed in Rocket Collision
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Graduate Geodesic Expansion: Finding the $\theta_{\pm}$ Factor
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High School Sine-Gordon model for better understanding of special relativity?
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Undergrad Electromagnetic Field & Space-Time: Relationship Explained
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Undergrad Gradient Energy: Definition & Classical Mechanics
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Graduate Gravitational Quadrupole Formula: Polarization Tensor
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High School What Drives the Acceleration of the Universe's Expansion?
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Undergrad Transforming Object Positions b/w Frames: A Procedure
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Undergrad Does the Topology of AdS4 Affect Global Hyperbolicity?
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Undergrad The bending of starlight is twice the Newtonian prediction
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Graduate Computing Null Geodesics in Schwarzschild Geometry
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Graduate Calculating Lie Derivatives for Tensors & Vectors
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Undergrad Light Clock Animation App: Find, Start & Feedback
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High School Time Dilation Effect: Corrections to Clocks on ISS
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High School SR equation seems to depend on orientation of the 'light clock'
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High School Is E=mc^2 a Bidirectional Equation in Physics?
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Undergrad Does charging my phone increase its gravitational force?
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Undergrad Correlation vs. Causation: Knowing the Difference
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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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