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 Special Relativity: Comparing Lengths in Parallel Motion
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Undergrad Conservation of Energy Momentum Tensor
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Undergrad Minkowski Metric: When to Use It
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Undergrad Predicting Local Arrival Time w/ Rocket Ship Clock & Accelerometer
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Undergrad Raising/Lowering Metric Indices: Explained
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Undergrad Architecture & Assumptions of General Relativity Theory
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Undergrad What if a body loses 86,6% of its mass as couples of gamma photons?
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Undergrad How specifically does an accelerated uniform rod Lorentz contract?
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Undergrad Flux of i-momentum: Is it Correct?
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Undergrad Time Dilation, Length Contraction & Massive Bodies
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Undergrad Gravitational wave interactions and the equivalence principle
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Undergrad Electromagnetic Potentials in Relativity: Retarded Potentials?
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Undergrad Lorentz transformation for 3 frames (2 dimensions)
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Undergrad Gravity as Curvature of Spacetime: Understanding Einstein's Theory
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Undergrad Violations of Energy Conditions for Metric in Relativist's Toolkit
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Undergrad Connection between General Relativity & Chaos Theory?
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Undergrad Christoffel's symbols: symmetry in the two (lower) indices
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Undergrad Active Diffeomorphisms of Schwarzschild Metric
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Undergrad Photon Speed Addition: Can it Be FTL?
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Undergrad Does Moving a Wire Increase its Magnetic Field?
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Undergrad Energy-Momentum Tensor: How Much Do University Students Learn?
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Undergrad Can Lagrangian mechanics be applied to motion in an expanding universe
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Undergrad Why Stationary Masses Attract: Explaining GR Intuition
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Undergrad The Equivalence Principle as a Starting point of GR
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Undergrad How time dilation is a permanent change and length contraction not?
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Undergrad Time travel to the Andromeda Galaxy
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Undergrad Transformation of the Christoffel Symbols
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Undergrad Derivation of the conservation of total energy and momentum
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Undergrad Wiki definition of Fermi coordinates
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Undergrad What is the ambiguity surrounding coordinate differentials in Relativity?
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Undergrad Special relativity vs Lorentz invariance
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Undergrad Parallel Transport: Uses & Benefits
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Undergrad Time Dilation: Relative to Medium or Vacuum?
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Undergrad Metric compatibility and covariant derivative
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Undergrad Derivation of an identity for ##\partial^2_t \int T^{00}(x^i x_i)^2d^3
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Undergrad Aberration of Light in Circular Motion: Does Distance Change?
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Undergrad The solution of a nonlinear equation in Schutz's book page 211 2nd edition
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Undergrad ADM Formalism: Intro-to-Intermediate Explanation
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Undergrad Time Dilation, Mass-Energy Equivalence: Implications for Time Passage
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Undergrad Speed of Light Paradox: Neutron Star Rotation Rate
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Undergrad Observing a rotating body when approaching it at near light speed
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Undergrad Coordinate time between spatially separated events in Schwarzschild spacetime
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Undergrad Max Time Travel Date: Can We Enjoy Moments From the Past?
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Undergrad Inertial Mass as Speedometer: Physics & Universe
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Undergrad How big are the non-mass parts of the stress-energy tensor?
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Undergrad The Shape of Space: How Does It Move?
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Undergrad Get Standard Units Flux Multiply c^2: Perfect Fluid/Einstein's Dust
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Undergrad Invariants of the stress energy tensor
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Undergrad QFT of Gravitons in Minkowski Space vs GR
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Undergrad Light Speed Mirror Reflection: Can You See Yourself?
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Undergrad Derivation of Riemann tensor's first order-equation
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Undergrad Covariant Derivative: 2nd Diff - My Question
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Undergrad Godel metric in a cylindrical chart
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Undergrad Special Relativity: 2-D Collisions for Alice & Bob
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Undergrad Two rings rotating about a common center
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Undergrad Accel. in Spec. Relativity in 2-Dims: Point Test Mass
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Undergrad Length Contraction & FTL Speeds: Are Lower Grades Faster?
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Undergrad Understanding Light from Black Holes
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Undergrad Lorentz transformation for 3 frames
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Undergrad How to See How Two Frames are Connected?
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Undergrad Playing music with Gravitational waves
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Undergrad Lie derivative of hypersurface basis vectors along geodesic congruence
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Undergrad Light pulse path, length and shape, when bouncing between two mirrors
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Undergrad Find CTCs in Kerr Metric: Visualizing Spacetime Geometry
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Undergrad Lorentz transformation of derivative and vector field
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Undergrad Light Momentum - Does it Make Sense or Not?
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Undergrad A "space elevator" extended to Neptune's orbit
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Undergrad Why Does the Angle Between Coordinate Axes in Different Frames Equal atan(v/c)?
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Undergrad Position of Particle in Special Relativity (A vs B)
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Undergrad Can we increase an object's gravitational force by adding energy?
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Undergrad Pullback of Vector Field in Relativity: Restrictions?
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Undergrad Appearance of a Kerr black hole from above
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Undergrad Energy Momentum Tensor Prerequisites: What Do I Need to Know?
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Undergrad Mechanical system with de Broglie-like features
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Undergrad Special relativity question driving me crazy....
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Undergrad Is Relativity a Complete Theory? Investigating Math Formulation
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Undergrad Relativistic Energy of Rotating Thin Ring: Quick Qs
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Undergrad Problems with Einstein's 1920 "Relativity"
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Undergrad Is the Lorentz Boost Speed Nontrivially Related to Galilean Speed?
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Undergrad How does gravity affect time on different planets?
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Undergrad Succeed in Learning Relativity: Transport, Frames, Tensors
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Undergrad How do you derive those basis vectors in GR?
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Undergrad Communication with Rindler Observer: Is It Possible?
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Undergrad Relativity of Simultaneity: What Einstein's Contribution Was
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Undergrad Okay, what exactly makes a timelike curve closed?
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Undergrad Three dimensional tracefree tensor?
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Undergrad On the Relativity of Lengths and Times
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Undergrad Applying the spacetime interval to regular vectors instead of curves
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Undergrad Velocity u > c? Faster Than Light Comm?
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Undergrad Proper (and coordinate) times re the Twin paradox
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Undergrad Duration of a round-trip to Alpha Centauri
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Undergrad Locally Cartesian Coordinates on the Sphere
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Undergrad Gravity: Empty Universe & 2 Apples 10B Light Years Apart
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Undergrad Understanding Boosts in Misner Space: Where Do They Come From?
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Undergrad Lorentz Transformations: Linearity & Best Argument
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Undergrad Apply Conservation Law to Euler-Lagrange Equation
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Undergrad Light Cone in Rindler Coordinates: Visualization & Reasoning
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Undergrad Headlight Effect of Moving Light Source: Formula
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Undergrad Learn About Conservation Law & Geodesic Equation
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Undergrad Shouldn't a moving clock appear to be ticking faster instead of slower?
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