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 Does a Photon See a 2D Universe?
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Graduate Twisting of a rotating cylinder
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Graduate Could High speeds create a black hole?
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Graduate Curved Spacetime & Inertial Motion in General Relativity
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Graduate Reading on a scale inside a train
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Graduate The notion of weight in relativity
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Graduate Can relativistic mass be a useful concept
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Graduate Understanding Relativistic Velocities in a Simple Two Body System
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Graduate What happens when you fall in an evaporating black hole?
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Graduate Annihilation of electron positron pair
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Graduate Simple special relativity mistake - find i can't
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Undergrad Everyday applications of relativity
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Graduate How to construct stress-energy tensor for a system?
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Graduate Transformation of the metric tensor from polar to cartesian coords
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Undergrad Reason for a black hole's gravity?
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Undergrad What Is the Energy of Black Holes and Why Is It So Mysterious?
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Graduate The Unruh Effect and Expansion of the Universe
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Undergrad Why things cant go speed of light?
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Graduate Kretschmann Scalar: Physical Significance & Invariants of Riemann Curvature
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Undergrad Length Contraction Affect on Mass: Physics Explained
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Graduate What is the Symmetry of the Ricci Tensor?
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Graduate Why is the speed of light the same for all observers?
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Graduate Stress-energy tensor & mass term in metric
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Graduate Einstein's Theory of Relativity: Can Wormholes Exist?
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Graduate Interval ds^2 on Rotating Disk - Explained
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Graduate Can physics describe a massive photon?
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Graduate Gravitational time dilation for a spherical body of finite radius
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Graduate Gravitational Waves: Experiments to Produce and Observe
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Graduate Magnetic field of straight wire, charges travels at relativistic speed
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Graduate Wormholes with a different gravitational potential at each end
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Graduate Square-Integrable Functions in Curved Spacetime
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Graduate Maxwell's Distribution: Integrating Over Velocity Spectrum
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Graduate The affect of spacetime curvatures on the speed of light
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Graduate Stress-Energy Tensor from Lagrangian: Technical Question II
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Graduate The time for 2 light pulses in a moving vehicle
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Graduate Relationship between electricity, magnetism, and relativity
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Graduate Implications of Einstein's Theories
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Graduate Schwarzschild Solution for Planetary Motion: Find x'i from xi
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Graduate Dimensions of Contraction due to Gravity
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Graduate Is there something like ds'^2=ds^2 in GR?
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Graduate The Classical Path, QM Path Integrals and Paths in Curved Spacetime
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Graduate Charge/mass ratio of moving particles (SR)
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Graduate Perspective on Relativity and Length Contraction
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Graduate Special relativity and photons
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Undergrad Time dilation to go a specific distance
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Graduate Einstein tensor fully written out
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Graduate A graphical explanation of Special Relativity
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Graduate Understanding Relativity: The Effects of Relative Motion and Mass
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Graduate Parallelism between a vector and a covector
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Graduate Rephrasing the train and platform thought experiment
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Graduate Adding a total derivative to the Lagrangian
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Graduate Single equation for space-time curvature?
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Graduate How Do Contradictory Metrics Align with GR Field Equations?
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Graduate How Does Effective Inertia Relate to Mass and Energy in Special Relativity?
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The book: Spacetime Physics (Taylor - Wheeler) - missing solutions
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Graduate Time Dilation Effects of Hypothetical Zero Gravity Pocket
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Graduate Gravitational wave solution boundary conditions
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Undergrad Velocities of objects moving towards and away from each other
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Graduate Lorentz boost matrix in terms of four-velocity
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Graduate Self-Learning Relativity: 4-Dot Product & qE.u Equation?
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Undergrad Doubt in Michelson Morley experiment
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Graduate Finding the function from ds=[2/(1-r^2)]√ (dr^2+(rd∅)^2)
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Graduate Does an object achieve ∞ mass or 0 mass at the speed of light?
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Graduate How to Derive the Tensor Field U_{acbd} from T_{ab} in Wald's Problem?
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Graduate Time dilation and uniform circular motion
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Graduate How does this affect the length contraction paradox?
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Undergrad When Should You Use Relativistic Equations Instead of Classical Ones?
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Graduate Linearized Gravity and the smalness of the pertubation
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Graduate Why the Minkowski inner product is not positive-definite?
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Graduate A positively curved visualization of gravity?
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Graduate Why do all measurements of neutrino speed show a positive delta t?
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Graduate What is the stress-energy tensor used for?
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Graduate How do we know that a photon is massless?
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Graduate CPT and Diffeomorphism Invariance
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Graduate Spherical GR dust shell with vacuum inside and outside
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Graduate Tensor Contraction: Is it Always Information Subset?
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Graduate Energy shifts in general relativity
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Undergrad Does the Speed of Light Change When Measured from the Sun?
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Graduate How Does Size Affect Time in Thought Experiments?
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Why does gravitational wave research get DoD funding?
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Graduate Derivation of energy-stress tensor in GR
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Graduate Length contraction clarification
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Graduate [Gravity in general relativity] I dont understand this help
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Graduate How Do Lorentz Group Generators Comply with Their Commutation Relations?
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Graduate Constant time-like vector fields-Maxwell's equations
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Graduate Derivation of Schwarzschild radius from escape velocity
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Graduate Non-Inertial Frames: Understanding Geometric Structures
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Graduate Are There Other Fields in General Relativity Besides the Gravitational Field?
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Graduate Second order geodesic equation.
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Graduate Mystery of the Moving Car: Solving the Speed Paradox
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Graduate Do you think Relativity theory can explain all the paradoxes?
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Graduate What is the Fine-Structure Constant and its Relation to Gravity?
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Graduate Teleportation violates conservation of energy?
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Graduate Inconsistency in formulas for relativistic energy
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Graduate Clock of Observers: Who Sees Whose Clock Running Slower?
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Undergrad Length Contraction oes the object or travel distance shrink?
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Graduate Are Time & Entropy the Same Natural Thing?
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Graduate MTW Exercise 25.5 b) - killing vectors
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Undergrad What is the use of time dilation.
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Graduate Why Aren't Event Horizons Bright?
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