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 What Are the Radial and Tangential Accelerations in the Kerr Metric?
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Graduate Help with energy momentum relation.
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Undergrad Would a Conveyor Belt from Earth to Mars Have a Time Delay?
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Graduate Understanding Homothetic Vector Fields: Intuition and References
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Graduate Photon Time: 10B Years, 0 Seconds?
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Graduate Empirical verification of conditions for Hawking singularity theorem when Λ≠0?
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Graduate What is Einstein Notation for Curl and Divergence?
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Graduate Can we truly know the fate of objects in black holes?
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Graduate Mass of trapped photons vs. Mass of potential energy
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Graduate Don't fully get Lorentz equations
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Graduate Why is the Time component in the Space Time Interval negative?
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Graduate Momentum of massive classical free field
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Graduate How can local gravity be calculated in a gravitational field?
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Graduate Does Mach's Principle Work Both Ways?
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Graduate De Broglie wavelength shift in gravitational fields
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Graduate Is a (-,-,-,-) metric signature meaningful?
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Graduate How Does Gravitational Time Dilation Relate to Gravitational Red-Shift?
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Graduate Lorentz covaraince of differntial operator
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Undergrad Does the concept of a singularity defy the laws of nature?
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Undergrad Can a Box be Bigger on the Inside? | Dr. Who Fans
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Graduate Is Walking at Constant Latitude with Your Arm Pointing North Parallel Transport?
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Graduate A question about the relationship between light and time.
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Graduate Plausibility arguments for noninteraction of parallel beams of light
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Undergrad Discovering the Paradox of Being Your Own Grandfather in Futurama
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Graduate Hand-wavy proof of (part of) Birkhoff's theorem
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Graduate Can't make a clock out of light
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Graduate Can calculus find the momentum of light?
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Undergrad Is E=m*c² the Key to Understanding the Universe's Equilibrium?
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Graduate Problem with relativity of simultaneity original example
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Graduate Energy-momentum of non-free classical particle
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Graduate Fermi-Walker transport geodesic
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Graduate How Is Rest Mass Defined in a Universe with No Absolute Rest?
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Undergrad What Is the Time Dilation Formula and How Does Speed Affect Time?
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What Is the Significance of Speed Differences in Driving?
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Graduate Force on a massless classical particle
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Graduate Instantaneous Communication Between 2 Stationary Observers
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Graduate Is relativistic momentum conserved?
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Graduate Wrong Time Dilation: Why Observers Disagree
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Graduate The difference between big delta and small delta?
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Graduate Parallel transport of a vector.
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Graduate Are Angles Relative? - Physics Thought Experiment
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Graduate Do time and space exist within the universe?
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Graduate Planetary Orbits calculated from the Metric
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Graduate Why can't there be a center of relativistic mass?
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Graduate Describing Time to a Philsopher
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Graduate Geometric shape of Minkowski space
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Graduate Is Time Real? Proving Its Existence
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Graduate Lorentz Transformation on a Wave Function
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Graduate Is there a simple equation for the trajectory of light in a gravitational field?
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Graduate The gauge of general Relativity
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Undergrad Speed of Sound, Light, and Time?
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Graduate Time dilation/ light speed-thought experiments
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Graduate Simulation for Newton's gravity, GR to be added later.
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Graduate What happens to the geometry of a spinning disk as it rotates about its center?
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High School Is this GR Explanation Accurate for Teaching 9th Graders?
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Graduate Does Potential Energy Have Mass, Even When Negative and Non-Unique?
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Graduate Two expression for relativistic acceleration
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Undergrad Is the concept of a perpetual motion machine feasible in the realm of physics?
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Graduate Light - What exactly is happening?
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SR/GR FAQs: Check out the Latest List
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Graduate Acceleration is perpendicular to velocity
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Graduate Speed of light hypothetical question
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Graduate The Spaceship experiment: Questions on Light's Inertia and Measuring Distance
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Graduate Time and physicality of dimensions
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Graduate The Relativity of Time: How Moving Clocks Can Alter Our Perception of Time
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Graduate When is something covariant or contravariant?
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Graduate The Speed of Light, Gravity, and Why it all is what it is.
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High School What's the Delay with a Wire to a Planet 1 Light Year Away?
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High School Why Does an Object Shrink When Traveling Close to Light Speed
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Graduate Is Gravity a Particle or a Spacetime Phenomenon?
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Undergrad Sundial & Relativity: Inertial Frame Differences?
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Graduate Can Standing Still Make Time Pass Faster Than the Speed of Light?
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Undergrad Humans travelling at light speed?
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Graduate Black hole surface gravity question
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Graduate What Happens to Time and Light in Physics?
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Graduate Do Closed Timelike Curves Exist in Reality or Nature?
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Graduate How Does Gravity Affect Flywheel Behavior in General Relativity?
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Graduate Basic questions on time dilation (probably already answered, sorry)
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Graduate Defining the dimension of a singularity?
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Graduate Can you create a black hole from light? Also, Whiteholes vs. Blackholes
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Graduate Gravitational effects on particles orbit in a box
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Graduate Understanding the Doppler Effect in Space-time Curvature
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Graduate What is the Stress-Energy Tensor
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Graduate Is Gravity a Result of Mass Attracting Quanta of Mass?
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Graduate Penrose diagrams, reference request.
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Undergrad What Happens to Matter Inside a Black Hole?
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Graduate Does increasing velocity shrink matter?
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Graduate Thought experiment on the nature of light
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Graduate Proof: Velocity of Light can't depend on velocity of body emitting the light
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Undergrad 2 protons have less mass than combined
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Graduate Effect of Gravity Well on Muzzle Velocity of Gun
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Graduate Global GR Theorems without Energy Conditions?
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Graduate Lagrangian for the General Relativity
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Graduate General Lorentz Matrix in Terms of Rapidities
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Graduate Thought-Experiment with illustration - help me understand
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High School Are black holes theoretical or real?
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Graduate Does Causality Have Meaning When Spacetime Disappears?
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Graduate Alcubierre Drive vs the Hubble Constant
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Graduate Imagine a solid, non-conducting cylinder at rest in IRF K, with a
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Graduate Lorentz transformation for non-inertial frame
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