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 Can Black Holes Transport Mass Back in Time?
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Undergrad Nearly Lorentz Coordinate System Explained
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Undergrad Tensors: Bar Symbol Over Functions or Indices?
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Undergrad Principle of Equivalence: Are You in a Gravitational Field?
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Undergrad EFE: Deriving Speed of Gravity, Gravitational Waves?
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Undergrad Difference Between T_{a}^{b} & T^{a}_{b}: (1,1) Tensors
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Undergrad Circle tangential velocity approaching c
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Undergrad Alcubierre Warp Drive: 2nd Law of Thermodynamics Impossibility?
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Undergrad Why special relativity is unsuitable to describe gravity
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Undergrad Levi-Civita Contraction Meaning: Undergrad Research
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Undergrad 2as = v^2 an other equations dealing with the past
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Undergrad Still have questions about photon mass
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Undergrad Maxwell's Equations & GR: How Scientists Got Away With It
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Undergrad Local meaning of the equivalence principle
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Undergrad Compton Scattering w/Moving Electron: Turner's Eq 5.29
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Undergrad Geodesic Deviation: Definition of Connecting Vector
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Undergrad Can an object be both a black hole and not a black hole?
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Undergrad Paradox: Electron Radiates in a Gravitational Field
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Undergrad Non-coordinate Basis: Explained
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Undergrad Understanding Time Dilation and Differential Aging in the Twin Paradox
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Undergrad Can a Magnetic Field Create Gravity?
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Undergrad Equivalence Principle: Controversy & Misinterpretations
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Undergrad Reconciling Spacetime & Quantum Uncertainty
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Undergrad Commutator of two vector fields
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Undergrad Calculating different time frames
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Undergrad Black Holes: Draining Empty Spacetime?
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Undergrad Differential equation from derivative of time dilation
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Undergrad Any database of results for the Michelson-Morley Experiment
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Undergrad What is the fastest time can go?
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Undergrad Gravitational time dilation - acceleration vs potential
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Undergrad Doppler Gravity: Does it Exist? Why or Why Not?
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Undergrad Is Time Travel Really Possible: Can We Move Backward in Time?
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Undergrad Einstein Proved Right 500M Light Years Away
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Undergrad Deriving Einstein Equations: Questions on Linearity & Symmetry
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Undergrad Force Experienced on a Curved Geodesic Path
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Undergrad Understand Relativity w/o Math: A Different Framework
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Undergrad Vectors & Frames Qs: Galilean & Lorentz Transforms
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Undergrad Real life example of the energy contained at E=γmc^2
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Undergrad How does the stress-energy tensor act on gravity?
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Undergrad Feedback Requested: Special Relativity Simplified by Phil
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Undergrad C Speed, Gravitational Time Dilation & 4-Velocity
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Undergrad Indices Up & Down: Understanding Dual Vectors
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Undergrad Time Dilation: Does Gravitational Field Strength Matter?
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Undergrad Doubt regarding derivation of Lorentz Transformations.
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Undergrad Restrictions of 1st Order Perturbation Theory
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Undergrad Learn Michelson Morley Exp: Best Books Explaining Light's C Speed
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Undergrad Kruskal–Szekeres coordinates for Kerr metric
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Undergrad Relativity of Time for Two Observers
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Undergrad Diffuse Reflection: Calculating Momentum Transfer
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Undergrad Metric for Single Photon: What's Best?
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Undergrad Energy Radiated by Object Falling in Black Hole
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Undergrad Can someone fact check my speech about BH?
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Undergrad Does gravity impact the speed of light?
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Undergrad Can someone explain this phenomena?
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Undergrad SR Time Dilation in Rigid Structure Clocks
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Undergrad Why is Hawking Radiation Unequal for Matter & Antimatter?
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Undergrad Consequences of light moving in a medium
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Undergrad Confusion regarding acceleration in SR
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Undergrad Killing vectors in isotropic space-times
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Undergrad Uncovering Invariance in SR: Why is $0 = (cdt)^{2}-dx^{2}$ Invariant?
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Undergrad How Does General Relativity Explain Gravity's Conundrum?
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Undergrad Understanding the Relationship Between Energy and Momentum in Special Relativity
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Undergrad Solving for the Missing Factor: Jumping into a Non-Rotating Black Hole
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Undergrad How does gravitational time dilation work?
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Undergrad Can Light Transfer Momentum to Create Sound in Air?
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Undergrad Can the Christoffel connection be observed?
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Undergrad What time structure supports info moving backward in time?
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Undergrad What Is Frame Dragging and How Does It Affect Space?
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Undergrad Gravitational DE(?) from Schwartzschild spacetime
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Undergrad Index placement on 4-potential
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Undergrad Is there a unit system with ##\hbar=G=c=\mu_0=1##?
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Undergrad Relativity and speed of light basics
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Undergrad Coordinate and proper time, null geodesic
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Undergrad Lie Derivative in Relativity: Examples & Uses
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Undergrad Fizeau's Exp: TRANSFORMING VELOCITIES to Explain
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Undergrad Calculating Killing vectors of Schwarzschild metric
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Undergrad Relativistic Velocity Transformation: Diff. Operator Explained
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Undergrad Does a blueshift change the energy of a photon?
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Undergrad Possible Warp Drive Physics: The Alcubierre Drive
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Undergrad Relativistic addition question
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Undergrad Nonlinear relation between coordinate time and proper time
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Undergrad Constructing the Tangent Space to the Sphere: A Simple Case Study in Relativity
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Undergrad Origin of Deformation Energy in Curved Spacetime?
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Undergrad Solving Boundary Conditions in 4D Spacetime Volume
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Undergrad Components of Riemann Tensor: 4 Indexes, 16x16 Matrix
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Undergrad Earth Between 2 Suns: Time & Space Questions
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Undergrad Calculating the Ricci tensor on the surface of a 3D sphere
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Undergrad GR: Does Clock Hypothesis Apply?
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Undergrad Measuring Magnetic Field in Rotating Frame
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Undergrad Meter stick slides over a meter wide hole at a high speed
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Undergrad Benefits & Disadvantages of Palatini Action for General Relativity
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Undergrad Speed of light around a (massive) object in space ...(i.e.sun
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Undergrad Can Momentum Exist Without Net Velocity in Special Relativity?
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Undergrad Conditions for Spherically Symmetric Black Hole Solution
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Undergrad Comparing Lie & Covariant Derivatives of Vector Fields
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Undergrad Transition from Normal Matter to Black Hole: Thought Experiment
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Undergrad Measuring Speed of Light: Reference Guide
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Undergrad Max Amplitude Gravitational Waves: 2?
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Undergrad No Universal Chronological Order of Events? Explained
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Undergrad What is the gamma factor in a particle's rest frame?
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