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 How can length contraction of a rod be measured?
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Graduate Gravity vs Diffraction in Troposphere of a Star
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Graduate Particle speed on a relativistic wheel?
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Graduate On the speed of light, accelerate toward mass
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Graduate Confining a photon to form a black hole
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Graduate Why is the history of special relativity often overlooked in textbooks?
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Graduate Dingle's Dilemma: Solve the Puzzle
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Graduate What are the implications of a Euclidean interpretation of special relativity?
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Graduate Understanding Field Shift: The Doppler Effect and the Speed of Gravity Explained
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Graduate Mathematics prerequisite to that of relativity
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Undergrad What do i need to know to move on to the Relativity ?
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Graduate Unraveling Redshift and Blueshift Confusion in Relation to Relativity
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Undergrad Twin Paradox: Explaining Time Dilation and Length Contraction
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Graduate (E,p)(E,-p) What pushes on a scale?
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Graduate Does a photon curve space-time, i.e., produce a gravitational field?
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Graduate Use of covariant derivative in general relativity.
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Graduate Gravity Probe B and 'frame dragging'
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Graduate Apparent superluminal velocity of galaxies
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Graduate Can Electromagnetic Forces Cause Relativistic Effects on Spin Particles?
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Graduate Conservation Laws: Matter and Antimatter Annihilation in a Sealed Box
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Graduate How can we see light moving with us if its speed is reduced by a factor of 100?
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Graduate Expression for the total energy of a particle of rest mass
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Graduate Special Relativity question (from non-physicist)
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Graduate Questioning examples often used to introduce the basics of relativity
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Undergrad What Causes the Asymmetry in the Twin Paradox of Time Dilation?
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Graduate Does the Earth's spin impact time dilation for satellites and GPS receivers?
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Undergrad How Does General Relativity Affect Satellite Orbits and Time Dilation?
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Graduate Faraday's law of induction and special relativity
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Graduate Is is not that Simple? (about Lorentz transforms)
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Undergrad Can Time Contract? Physics Teacher Bet
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Graduate What is Physical Significance of Lorentz Transforms ?
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Undergrad Time Dilation: Gravity & Speed Effects
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Undergrad Understanding Aether: What is it and What Does It Do?
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Undergrad GPS & Relativity: Experiments & Simulations
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High School Gravity: A Mystery of Attraction or Repulsion?
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Graduate How Does Proper Time in Radial Free Fall Differ from Newtonian Predictions?
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Graduate Understanding the Sagnac Effect in GPS Systems: Explained
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High School Is Relativity Too Complex for Young Students to Grasp?
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Graduate How Is Relativistic Mass Measured Indirectly in Physics?
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Graduate Current Sagnac Effect Theory: PF Viewpoint
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Graduate Does gravity function as a lens, a prism or both?
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Undergrad Why Can't Photons Have Rest Mass?
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Graduate Does a relativistic rolling ball wobble?
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Graduate Gravity: A Dual Role as a Lens and a Prism for Light?
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Graduate M&M, Trouton-Noble, Disintegrating Particle, etc
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Graduate Revisiting the Concept of Time for Photons: Insights from the Elevator Analogy
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Graduate Why does the second postulate specifically refer to c?
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Graduate Why is the idea of Aether being attached to Earth questioned?
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Graduate Solving Friedmann's Dust-Filled Equation for Radial Geodesics
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Graduate Sign convention in the space-time 4-vector
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Graduate Twins Paradox and acceleration
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Undergrad What Is Einstein's Geometric Model of Gravitation?
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Undergrad Photon Kinetic Energy: Wavelength & Frequency
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Graduate Discuss events which are simultaneous in one frame?
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Graduate Do Black Holes Really Exist or Does General Relativity Contradict Itself?
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Graduate Why are tensors important in general relativity?
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Graduate Why is the speed of light the same to any observer?
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Graduate Understanding Special Relativity: The Train Example
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Graduate Can Relativity Explain the Effects of High-Speed Motion on Gravity?
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Graduate Is time, inside an event horizon, time-like or space-like?
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Graduate Does General Relativity Challenge the Conservation of Energy?
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Graduate Twin Paradox: Can Age Asymmetry be Achieved on Earth?
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Graduate Travel Faster Than Light: Going Back in Time?
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Graduate Divide by Zero: Lorentz Transformation Explained
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Undergrad OK FINE, magnetism is explained away by relativity
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Graduate Can the Ricci Scalar Depend on Spacetime Coordinates?
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Graduate Does Lorentz Factor Appear in General Relativity?
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Graduate Is black hole entropy invariant?
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Graduate Retarded Time Solutions for Non-Homogeneous Wave Equations
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Graduate Understanding Relativity: A Blind Man's Perspective on Time and Physics
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Graduate Electron Velocity vs Field Strength?
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Undergrad Does Mass Increase as Velocity Approaches the Speed of Light?
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Graduate Gyroscope Axis Observed 45 Deg to X,Y Plane - How is This Resolved?
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Graduate Unveiling the Observations of a Spinning Disc Approaching Light Speed
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Graduate Gravitational Flux in Black Holes: Can it Escape the Event Horizon?
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Graduate Wheel Experiment: Investigating Relativistic Wobble
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Graduate General Relativity as a non-Abelian gauge theory
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Graduate Why do objects appear to shrink as they approach the speed of light?
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Graduate Do Photons Experience Relativity Effects?
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Graduate John Wheeler's Legacy: Einstein v. Wheeler's Black Holes
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Graduate What experiments are lined up to test gravity
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Graduate Is Space Truly Homogeneous and Isotropic?
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Graduate Defining Inertial Reference Frames in General Relativity
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Graduate Particles travelling faster than the speed of light?
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High School Why is the Equation E=MC2 Significant in Relativity and Energy Equivalence?
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Graduate Lorentz Transforms - Understanding Time Dilation & Velocity Slope
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Graduate Force & Acceleration: Can a Frame be Accelerated without Force?
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Graduate Another length contraction paradox
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Graduate Combination of Michelson/Morley and Time Dilation
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Graduate Laser Measurement and Velocity Determination in Moving Containers
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Graduate Understanding Gravity: The Curvature of Spacetime Explained
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Graduate Definition of an Inertial Frame
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Undergrad Can Mass Be Transformed Into Energy?
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Graduate Calculating the travel time in relativistic travel
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Graduate Relativistic thermodynamics controversy?
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Graduate Travelling to the Nearest Star and Time Dilation
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Graduate Spaceship Observations in Relativity: A Newbie's Question
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Undergrad Understanding Velocity: The Perspective of Fish in a Tank
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Graduate Pervect's discussion re photon/light perspective/reference frame
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Graduate Orbital Light Speed: Is it Possible?
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