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 Understanding Space-Time: Exploring Einstein's Theory of General Relativity
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Graduate Notation difficulties with metric and four vector
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Graduate What Defines Future-Directed Vectors in Physics?
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Graduate Witness Life of Universe from Black Hole Event Horizon
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High School Gravitational Field Strength of Bodies Exceeding c
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Graduate Falling Into a Black Hole: Time Dilation & Survival
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Graduate Intersection of Hyperboloid & 2-Plane=Ellipse
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Graduate Why Do the Terms in the Lagrangian Action Have the Same Dimension?
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High School Galilean Relativity: Different Frames, Different Results
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Graduate What is the experimental evidence for mass relativity?
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Graduate Time Dilation for Interplanetary Migration: Can We Go?
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Undergrad Can Emergent Spacetime Concepts Enable Faster-Than-Light Travel?
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High School How Can Time Dilation Be Explained Without Math?
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Undergrad Mass Energy Equivalence Equation
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Graduate Analysis of Train in Tunnel Problem Using an AND Gate
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Graduate Roadmap to Understanding the Theory of Relativity
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Graduate Interesting Effect of Conformal Compactification on Geodesic
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Graduate Proving Spin Coefficient Transformation for Null Rotation with l Fixed
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Graduate Relationship Between Spatial Expansion and Gravity's Force?
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Graduate Interesting applications of relativistic angular momentum?
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Graduate Gravitational Stress: Source of Energy for Orbiting Bodies
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Graduate Deriving Lorentz transformations
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Undergrad Is the relativity of simultaneity the reason for time dilation?
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Graduate Riemannian Penrose Inequality: Proof Restriction to n=3?
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Graduate What was the explanation of OPERA superluminal neutrinos?
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Graduate Why does length contraction solve this? (2 Lightclocks)
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Graduate What Happens to Energy and Spacetime at a Black Hole's Event Horizon?
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Graduate Poisson, Einstein, Weak Energy Condition
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Graduate Exterior Schwarzschild Spacetime Defined
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Graduate When do total differentials cancel with partial derivatives
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Undergrad Black holes and the relativity of simultaneity
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Undergrad Is the speed of all waves constant?
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Graduate GR Multibody Problem: Comparing Experimental Measurements
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Graduate What's the meaning of the norm of Poynting 4-vector?
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Undergrad Why don't we run out of gravitational force?
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Graduate Can Gyroscopes Curvature of Space Explain Precession Motion?
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Graduate More twin paradox and acceleration
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Graduate Einstein Field Equations, how many?
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Graduate Breakdown of Correspondence Principle: Null Dust Case
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Graduate Interplay of space and time in Spacetime invariant interval
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Graduate Phase Velocity Definition: A or B?
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Graduate Help Understanding Simultaneity Diagram
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Graduate Perception & Relativity: Near-Light Speed Travel
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Undergrad How the standard spacetime model relates to reality
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Graduate Who Hits Wall First: Light Beam or Light Traveller?
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Graduate Mirror Reflection of a Wave: Analyzing the Outgoing Wave
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Graduate Length contraction experiment results
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Graduate Solve the Special Theory of Relativity Confusion
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High School What Determines the Speed of Light Limit?
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Graduate Ratio of time dilation relation in different potentials
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Graduate Question on Phenomena beyond General Relativity
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Undergrad Why does time link gravity and masslessness?
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Graduate Light Beam Opposite Motion: Einstein Special Theory
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Graduate Time as a dimension, can spatial length be applied to it?
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Graduate Gravitational Time Dilation & Orbits of Objects
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Graduate On the usual confusion among what it is and what is measure
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Graduate Flat Universe as Torus: Legit Research & Solutions?
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Graduate Confused about the logic of a Special Relativity problem
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Graduate Producing a metric with only a single coordinate function
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Undergrad Relativity of simultaneity, understood, now not so sure.
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Graduate What Are the Key Effects of Special Relativity on Time and Mass?
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Graduate Electromagnetic Tensor in (-+++) Convention
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Graduate Lorentz Transformation Equation Paradox
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High School Lorentz Transformation Equation Paradox - Find Where I Went Wrong
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High School FTL Paradox: Grandfather Paradox Explained
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Graduate Shape of Space-Time: Warping Explained
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Graduate Do Moving Objects Return to Original Length After Stopping?
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Graduate General vectors and tangent space
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Graduate Question on Einstein original paper
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Graduate Is Gravity a Physical Entity Like Light Waves?
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Graduate Assuming Lorentz transform is affine
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Graduate Analog of Gauss' law in gravity
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Graduate Can the Dot Product of Four Vectors Maintain Positive Component Signs?
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Graduate Intergalactic Space & the Minkowski Diagram
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Graduate Is the train in the circular track paradox similar to the barn/pole paradox?
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Graduate Has Speed of Light Always Stayed Same?
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Graduate Define Mass: Travels Through Time?
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Graduate Is There a Hidden Meaning in Integrating the Lorentz Factor with Trig Sub?
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Graduate Can a "density" of points create curvature?
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Undergrad Lorentz Transformations or Dilation/Contraction?
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Graduate Are length and time Trade-offs in relativity?
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Graduate Null geodesic definition (by extremisation?)
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Graduate Independent Killing vector field
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Graduate Questions of Absolute Light Speed & Mass by an Engineer
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Graduate Question about relativity of simultaneity
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Graduate Does the photon have a 4-velocity in a medium?
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Graduate Unbounded perturbed geometry due to analyticity
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Graduate Statistical Mechanics in GR: Basics & Applications
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Undergrad Hyper-Light Speed: What Happens?
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Graduate Is There More to Special Relativity?
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Graduate Principle of relativity and invariance of c
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High School Why is gravitational force always attractive in nature?
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Graduate Speed of Light Since Big Bang: Evidence & Theory
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Graduate Understanding Vaidya Metric & Pure Radiation Stress-Energy
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Graduate Is Time Dilation Misunderstood in Popular Science Videos?
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Graduate Find Perfect Fluid & EM Tensor in Rest Frame
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Graduate Why a vector field can not be used to describe gravity?
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Graduate Length Contraction & Galaxies: Time Dilation Adjustments
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Graduate Could Length Contraction Provide Insights into Quantum Entanglement Paradoxes?
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Graduate Could FTL Communication be Achieved via Mechanical Connection?
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