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 Velocity Addition for Orthogonal Boosts in SR
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Graduate Help with the variation of the Ricci tensor to the metric
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Graduate Raising Indices with Minkowski Metric: Solving Weak Field Approx
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High School Is Falling to Earth's Core 42 or 38 Minutes?
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Graduate Understanding 2 Effects of G.R.: Periastron Precession & Pulsation Periods
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Graduate Creation of Time: Understanding the Universe Through Perspective
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Graduate Relativity and Circular Magnetic Field
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Graduate The importance of velocity in simultaneity
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Graduate Solving Friedmann Equations with Cosmological Constant
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Graduate Master Index Notation: How to Ensure Accuracy in Calculations
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Graduate Direction of length contraction in combined motion
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Graduate Lorenz covariance vs proofs of relativity theory
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Graduate Time Dilation: Inside a Rotating Sphere of Light
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Graduate Definition of Rapidity: Learn About Hyperbolic Trigonometric Functions
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Graduate Are all null geodesics also affine?
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Graduate Source of Magnetic component of light
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Graduate Curvature, Geodesics and Acceleration in GR
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Graduate Time Dilation: SR Basics & Confusion
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Undergrad Neutrons in electromagnetic fields
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Graduate Rubber Sheet Analogy: How Mass Bends Spacetime
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Graduate Lorentz contraction in circular particle accelerators
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Graduate Time Dilation: Does Total Speed Matter?
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Graduate Does Light Move or Exist Simultaneously in Special Relativity?
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Graduate Is It Possible to Independently Vary Kij in Both Methods?
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Graduate Space Curvature: Friedmann Models Explained
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Graduate Superluminal propagation of fields
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Graduate Superluminal and temporal effect
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Undergrad Special Relativity: Light & Time Travel Questions
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Graduate Understanding Gauge Symmetry in Massive Gravity: Analysis of Fierz-Pauli Action
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Graduate What is Rieman for a conformal metric?
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Undergrad Speed of Light: Stationary & Moving Observers
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Graduate Time Dilation & Visual Observation of Black Holes
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Graduate How Does the Element of Solid Angle Transform Under Lorentz Transformation?
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Graduate Realizing Warp Drive with Matter-Antimatter Fuel Cells
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Graduate Extension of Schwarzschild Light Cones: White Hole/Black Hole
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Undergrad Light from Train Scenario: Student Question Explained
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Graduate Time dilation in the field interpretation of GR
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Graduate Time frames and general relativity
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Graduate Why Can I See UV and IF Light While Others Can't?
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Graduate Is Gravitational Redshift Similar to the Doppler Effect?
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Graduate Why do parallel light beams not attract gravitationally?
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Graduate Light speed is not constant or accurate
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Graduate Instantaneous Curvature in Mass Warp Spacetime?
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Graduate Why do photons seem to defy the effects of time?
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Graduate Can we use a light clock to measure the accuracy of another clock?
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Graduate Does kinetic energy increase the inertial mass?
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Undergrad Force on High Moving Object in X Direction: Explained
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Graduate Understanding Spacetime in QM and QFT: Time Treatment and Particle Tracking
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Graduate Gravitational waves in cosmology?
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Graduate Proper Frame of Observer O: Unique Foliation?
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Graduate Understanding Einstein Field Equations & Levi Civita Symbol/Jacobian Determinant
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Graduate Panda"Understand Relationship between Stress-Energy Tensor and Interval
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Graduate Understanding Conformal Time & Lorentzian Manifolds: A Layman's Guide
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Graduate Gravitational Effects & Instantaneous Spacetime Distortion
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Graduate Time Dilation & Tunnelling Probability in Double Potential Wells
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Graduate Path of a planet orbiting a star in GR
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Graduate Tensor Calculus Problem: Simplifying Terms with Index Exchange
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Graduate Frequency dependence of gravitational acceleration
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Graduate Einstein Field Equation: Taking into Account Special Relativity & Light Speed
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Graduate Convex Neighbourhoods in Relativistic Spacetimes
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Graduate Bianchi Identity: Explained Simply & Relation to Riemann Tensor
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Graduate Speed of Light Constancy: Theory & Experiments for All Observers
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Graduate Trampoline analogy for gravity
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Graduate What happens to a person in free-fall at the center of the Earth?
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Graduate Maxwell Field in General Relativity: Explained
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Graduate Relative Speed of Two Inertial Frames | Proving It Must Be Same
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Graduate Gauge Invariance of Weak Gravity Approximation
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Graduate Is the Schwarzschild Metric Always Applicable to Black Holes?
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Graduate Measuring Tape, Speed of Light & Time Dilation
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Graduate Causality in Relativity: Examining the Illusion of Simultaneous Cause and Effect
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Graduate Hypothetical FTL communication black-boxes and causality
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Graduate Question about Metric Tensor: Can g_{rr} be Functions of Coordinate Variables?
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Graduate How does GPS correct for time dilation?
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Graduate Questions about FLRW Metric: Finiteness, Radial Coord & More
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Graduate Metric matrix for binary star system?
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Graduate Einstein's Field Equations: Effective Potential Functions
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Graduate Index-Free Decomposition of Derivative Timelike Congruence
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Graduate What is Spherically Symmetric Radiation-Filled Universe?
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Graduate How Did Clifford's Theories Influence Modern Physics and String Theory?
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Graduate Does gravity indeed travel in waves?
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Graduate Active/Passive Diffeomorphisms – clarification on Rovelli’s
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Graduate Computing Curvature of Space at Point from Mass - Help Needed
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Graduate Is mass movement influenced by the curvature of spacetime?
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Graduate Schwarzschild Radius Derivation: Is it Possible Classically?
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Undergrad Quick calculation check please
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Graduate How do closed timelike curves avoid mass discontinuities in spacetime?
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Graduate Speed of light postulate and clock synchronization
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Graduate I just want your guys opinion on my idea against E=mc
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Graduate Could the universe exist without space and time?
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Graduate Time Passes Faster: Moving Frame w/ Many Clocks
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High School Understanding Time: A Scientific Approach
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Graduate Relative Observed Speed: Earth-Falling Objects & Time Dilation
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Graduate Measuring the One-Way Speed of Light: Roadblocks & Solutions
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Undergrad Relative Time: Earth vs Mars - A Physics Enthusiast's Question
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Graduate How Do Spinors Fit in With Differential Geometry
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Graduate Combining Special Relativity & Newtonian Gravity: Can We? Why?
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Graduate Dark Energy: Negative Pressure or Density?
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Graduate Derivative of Vector Field: Connection Needed?
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Undergrad What are the energy implications of time travel into the future?
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Graduate Can Each Particle Experience Time as Its Own Observer?
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