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 Discover the Science Behind Age Differences at the Equator vs. Poles
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Undergrad Special relativity - please can someone clear this up?
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Graduate If Time Is The Fourth Dimension
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Graduate What are the effects of higher derivatives in the slow-motion approach?
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Graduate Questions about Light: Speed & Gravity
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Undergrad Gamma Rays: Faster than Light?
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Graduate Can Two Airships Achieve Superluminal Speed with Elastic Material?
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Graduate Why Do You Travel Into The Future As You Approach The Speed Of Light?
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Graduate Conceptualizing higher dimensions
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Graduate Thermodynamic - conservation of energy/mass problem, I can't figure it out
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Graduate Virtually indestructible materials, say adamantium.
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Graduate Composition of Lorentz Transformations
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Graduate Why is a wire with a current not charged?
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Graduate Why Did Einstein Choose the Riemann Tensor for General Relativity?
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Undergrad Learning special relativity in my physics class
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Graduate Can Twisting a Rod Allow Faster-Than-Light Communication?
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Graduate Theoretical experiment on relativity
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Graduate Explaining EM, Weak & Strong Interactions in 4D Spacetime
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Undergrad Physics Q: Travel Faster than Light? E=MC^2?
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Graduate Calculating Time Travel & Wormhole Theories
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Graduate Gravity & Light: Bending the Laws of Physics
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Graduate Inertial Frames distinguished by proper times
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Graduate Mossbauer Effect & Photon/Gravity: How it Verifies Energy MGH
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Graduate What,s the energy of the gravitational field?
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Graduate Travel Faster Than Light: Theory & Experiments
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Graduate Why does light travel backwards in this experiment?
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Graduate Attempting to Understand Alcubierre
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Graduate Interaction Energy how does it transform between inertial frames?
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Graduate A Serious Question from an Educated Layman
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Graduate Ellis on an evolving block universe (gr-qc/0605049)
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Graduate How Do Particle Physicists Measure the Relativistic Energy of Tardyons?
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Graduate What is the dimension of the spacetime interval?
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Undergrad Gravity Explained: Why Objects Fall
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High School What is a Simple Explanation of General Relativity for High School Students?
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Graduate Penrose Diagram for Schwarzschild
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Graduate Question on Spatial Curvature: Laser Experiment on a Spaceship
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Undergrad Is Matter Just Another Form of Energy in E=MC²?
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Graduate See-saw problem in special relativity
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Graduate Aether theories which are experimentally indistinguishable from SR.
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Graduate What is the Gravitational Acceleration Beyond the Event Horizon of a Black Hole?
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Undergrad Can gravity bend the path of light?
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Graduate Relativistic momentum definition
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Graduate Can We Measure the Elusive Gravitational Waves?
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Graduate Can Approaching the Speed of Light Prohibit Time Travel?
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High School Photon and electron racing show
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Undergrad Hypothetical Question. Creating Gravity and power supplies
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Graduate Could black holes be the key to time travel and the Big Bang?
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Undergrad Understanding Newton's Laws in Non-Inertial Reference Frames
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Graduate How does light travel at a constant speed without mass or inertia?
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Graduate What Are the Absorption Peaks of Gravitational Radiation Passing Through Earth?
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Graduate Mass in Relativity: Bucherer's Experiment Result
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Graduate Can an object become a black hole by reaching 99.9% the speed of light?
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Graduate What is the D'Alembert operator
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Graduate Challenging Einstein? New Model of Space & Time
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Graduate A quick question on the twin paradox (quick I promise)
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Undergrad Could Time Travel Create Extra Matter and Energy in the Universe?
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Graduate Explain to me how a sphere can exist in higher dimensions?
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Undergrad Understanding the Twins Paradox: Time Travel and Relativity in Space
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Graduate Understanding Accelerated Motion in Relativity
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Graduate Can SR be derived from other postulates than the constancy of c
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Graduate Conservation laws and relativistic dynamics
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Graduate How Does Time Dilation Affect Thermal Equilibrium in Gravitational Fields?
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Graduate Curvature without tidal forces
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Graduate Twin Paradox: Earth-Twin vs Space-Twin Aging
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Graduate What is the optimal speed for interstellar travel?
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Graduate What Are Your Thoughts on Dual Meanings in Physics Terminology?
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Undergrad Light Barrier: Breaking the Speed of Light?
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Graduate Is K in Bondi K Calculus Constant Due to Homogeneity and Isotropy of Spacetime?
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Graduate Mass of Photon: Is 0 Rest Mass Possible?
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Graduate Why Do Velocity & Momentum Equations Need Revision?
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Graduate Non-Rotating Charged Black Holes: Mass, Electric Field, & Quantum Charges
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Graduate Why is there a k in Bondi k calculus?
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Graduate Can Photons from a Laser Distort Space-Time Like Massive Objects?
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Undergrad Time Travel Questions: Does Age Change with Speed?
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Graduate How Do Killing Vectors Affect Geodesic Deviation?
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Graduate When the photon is born on the horizon .bang?
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Graduate Energy, momentum, & mass of a box of moving particles
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Graduate What Is the Orbital Period for Circular Orbits Around Black Holes?
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Undergrad Potential energy contributes to the mass
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Graduate Time an Illusion? Einstein Explains Why According to Relativity
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High School What is the exact definition of mass?
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Graduate Here's the way to go faster than light
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Undergrad Reaching the Speed of Light: Can We Achieve C?
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Graduate Understand Mach's Principle: What does it Mean?
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Graduate Understanding Gravitational Waves & Self-Taught GR
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Graduate Can We Really Time Travel by Exceeding the Speed of Light?
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Graduate Lightspeed: does the definition of time make it constant?
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Graduate How to show something transforms as a covector?
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Graduate Photon Mass: Is Student Learning Misleading?
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Check Out This Link - A Puzzling Argument
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High School Why is light's speed the fastest speed?
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Graduate Man Running on a Train: Clocks and Velocity
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Graduate Is Lorentz Contraction Real in the Frame of Reference of a Moving Object?
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Graduate About the geometry of general relativity
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Undergrad Uncovering the Mystery: Slowing Time on a Plane Explained
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Graduate Can objects catch up with their own photons?
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Graduate Anisotropy of the speed of light?
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Graduate Curved Space Model: Explaining Gravity & Magnetic Force
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Undergrad C vs. Fiber Optics: Speed Comparison and Myths Debunked
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Graduate How can magnetic field be a relativistic phenomenon?
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