Special and General Relativity Forum

Graduate How Does Relativity Explain Light Behavior When Fired from a Moving Spacecraft?

Undergrad Astronaut traveling at 2.40×10⁸ m/s: how long is 1.25 years on Earth?

Graduate Does Mach's principle explain the origin of inertia?

Undergrad Do Gravitating Bodies Warp the Fabric of Space?

Graduate How come massless photon has energy

Graduate Particle paths in conformally flat spacetime

Undergrad Does a moving observer hear platform clock seconds at normal pace?

Graduate Which coordinates are functions of s in Euler-Lagrange equations

Graduate Why can acceleration be zero in one frame but nonzero in another?

Graduate Can you be in stable orbit inside a blcak hole?

Graduate Absolute light speed or velocity or both?

Graduate Time dilation where there is no net gravity?

Graduate Do gravitational waves bend in a strong gravitational field?

Graduate Different acceleration in an accelerating rocket?

Undergrad In Ensteins theroy of gravity.when a cannon ball is fired up,it

Graduate Why does choosing coordinates reduce Einstein's field equations from 10 to 6?

Graduate Can You Get a Cosmic Tan from Lights Across the Universe?

Graduate Straight line through spacetime.

Graduate Torsion and the conservation of angular momentum

Graduate A clever cosmologist refutes relativity

Graduate Why relativistic momentum appears not conserved across frames

Graduate Relativistic Effects: When to Consider v/c Ratios

Graduate Why isn't the Cotton tensor identical zero?

Graduate How can we use differential geometry to improve our understanding of SR?

Graduate Motion and the Warping of Space

Graduate Relative speed of light paradox

Undergrad Does a moving object need more heat to raise its temperature?

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Graduate Gravity speed vs light speed experiment

Graduate Acceleration inside an event horizon

Graduate A ambiguous variation of Einstein-Hilbert action

Graduate Does length contraction apply to objects only or to space itself?

Graduate Time Dilation/Proper Time Question

Graduate Vacuum solutions, and Explicit source terms

Graduate Trying to understand linear frame dragging

Graduate Derivation of Relativistic Momentum

Graduate Why is charge/current density 4 vector a twisted differential 3-form?

Graduate Compact support of matter fields

Graduate Raychaudhuri equation in Jacobson's paper (gr-qc/9504004) ?

Graduate The speed of light and time dilation

Graduate Conservation of momentum a universal truth

Undergrad How does motion affect the potential energy of a spring?

Graduate Relativistic centripetal force

Graduate Why is the speed of light a hard limit in special relativity?

Undergrad Challenge to the 1st postulate

Graduate Does the Pound-Rebka detector need to move to cancel the gravitational blueshift?

Graduate Struggling with the relationship between the Lagrangian L and the interval ds?

Graduate Can Fermat's principle be applied to gravitational lensing?

Graduate Time dilation in biological processes

Graduate Does zero Ricci scalar define flat spacetime?

Graduate I don't understand why your clock slows down

Graduate Does gravity cause length contraction and mass inflation like motion does?

Graduate Do magnetic fields affect the speed of light in the Pound-Rebka experiment?

Graduate Is time a scalar quantity in general relativity?

Graduate Generality of theta=pi/2 in Schwarzchild

Graduate Does the Universe spin (does it have an angular momentum)?

Graduate Relativity vs Quantum Mechanics

Graduate Energy in Schwarzschild geometry

Graduate Mach's Principle and the Accelerating Universe

Graduate FRW dust with E3 hyperslices and the Milne frame

Graduate Is gravity a force or just spacetime curvature?

Graduate Why does a photon experience no time but still move through space?

Graduate Albert Einstein's Theory of Relativity

Graduate Do not believe this letter on gravitational radiation

Graduate Stress-energy tensor diagonalization

Graduate Is Poincaré gauge theory widely accepted and experimentally tested?

Undergrad Understanding Mass-Energy Equivalence to Fdx and dm in E=mc^2

Graduate What Are the Timelike and Null Coordinates Used in the Schwarzschild Metric?

Graduate What restores spacetime geometry after a massive object moves away?

Graduate Are Lorentz and Poincare insufficiently credited for special relativity?

Undergrad Why aren't you accelerating when you fall

Graduate Does the presence of mass affect the curvature and growth of space-time?

Graduate What actually causes gravity if the rubber sheet analogy is circular?

Undergrad Is there such a thing as the Null Speed in the concept of motion and relativity?

Graduate Frame of reference of any observer

Undergrad Do gravitational waves have different frequencies?

Graduate Example of Unsymmetrical Metric: 2D Solutions

Undergrad Does e=mc² account for the direction of light?

Graduate Does gravitational interaction exceed light speed in photon-star collisions?

Graduate Do the first and second fundamental forms relate to the metric and curvature in GR?

Graduate What is a one form vector and covariant representation?

Graduate Do all observers agree on gravitational mass?

Undergrad Properties of gravity and how it works

Graduate Is Relativistic Mass Consistent in Inelastic Collisions?

Graduate How long does a ray of light travel for based on ITS time scale

Graduate Is the Proof of E=mc² Valid for Accelerating Objects in Special Relativity?

Graduate Green's function for Klein-Gordno equation in curved spacetime

Graduate Correction term to Newtons gravitation law

Graduate What kind of 'rotation' is the Gaililean transformation?

Graduate Can Total Energy Be Less Than Rest Energy in Special Relativity?

Graduate Is Proper Time Contraction Valid for Accelerated Watches?

Undergrad Relative Velocity of two particles

Graduate Is the distance relative also?

Graduate Distnace between points and isometric mapping

Graduate Does mass increase in SR mean higher gravity in GR?

Undergrad If you were out in space, motionless

Graduate Can a Slower Spacecraft Overtake a Faster One in Relativistic Travel?

Graduate Why is speed of light constant?

Graduate Would it Feel as if Time Stopped If I Became Light?

Undergrad Time Dilation: How Can a Watch Tick Slower?

Graduate Does time obey the inverse square law?