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.
High School Explaining Gravity for Non-Physicists
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Undergrad Upside Down Pendulum: Does Gravity Affect Its Tick Speed?
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Graduate Collision practice problems/tutorial
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Graduate Theory of Simultaneity & Wikipedia article
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Graduate GR: Local Inertial Frame & Poincare Invariance
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Graduate Boosting Your Fuel Efficiency When You Reach C: The Impact of Mass Increase
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Graduate Does the 4th dimension mean our universe is definite?
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Graduate Can a Rotating Sphere at Relativistic Speeds Create a 'Black Spot'?
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Graduate Is Sadi Carnot's Work on Energy Density Still Relevant Today?
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Graduate Basic questions about general relativity concepts
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Graduate Is Time the Fourth Dimension in Euclidean Space?
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Undergrad Twin paradox - which twin is older?
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Graduate Twin Paradox in a Flat Toroidal Universe: Time Dilation and Inertial Frames
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Graduate Not completely getting Lorentz transformations
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Graduate Center of the Universe: Exploring the Possibilities
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Undergrad Light interaction/interference
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Graduate Anyone thought about this before?
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Graduate What Does an Observer See When Falling Into a Black Hole?
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Graduate Understanding BH Singularities - Temporal vs Spatial
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Graduate Confused About Traveling at the Speed of Light?
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Graduate Is the gravitational time dilatation a real effect?
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Graduate Orbital velocities in the Schwartzschild geometry
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Graduate Topology on manifold and metric
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Graduate Understanding the Antisymmetry of the Maxwell Tensor
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Graduate Schwarzschild Radius, Constantcy of Light speed, and Time Dialation
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Graduate Relativity problem thats been bugging me
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Graduate Schwarzschild & Kerr black holes geometries
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High School What is Gravity? How Does It Work?
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Graduate Energy Needed to Fold Spacetime?
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Graduate Does the Zeeman Effect Alter Clock Rates in Different Magnetic Fields?
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Graduate Question about energy density in On the Electrodynamics of Moving Bodies
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Graduate Gravity: Fictitious Force & Inertial Frame of Reference?
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Graduate Phase, Geodesics, and Space-Time Curvature
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Graduate Are Time and Movement the Same Dimension?
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Undergrad Galilean transformation from velocity composition?
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Graduate Equivalence of mass, energy and gravity
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Undergrad Speed of light in refractive material
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Graduate What is the oldest frame of reference in the Twin Paradox?
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Graduate Any mass accelarating @ 'c' is light
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Graduate Relativistic Hydrostatic Pressure in Constant Gravitational Field
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Graduate Cartan Formalism: Mapping Tetrad Field to Minkowski Spacetime
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Graduate What Are the Implications of Approaching the Speed of Light for Space Travel?
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Graduate How Does Spacetime Manipulation Affect the Flow of Time?
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Graduate Is Gravity an Inertial Force According to the Equivalence Principle?
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Graduate How could you visit yourself 10 mins ago?
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Undergrad If mass becomes inifinite when approaching the speed of light, then photons?
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Graduate Questions on Energy, Mass, and velocity
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Graduate Are Black Holes Real? Examining Empirical Evidence and Astronomical Distinctions
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Graduate Rindler Question: Time Dilation in Born Accelerated Frame
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Graduate How Does Acceleration and Gravity Affect Time Dilation?
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Undergrad What is the most accurate gravitational force equation?
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Graduate Is there a classification for tensors that are invariant under isometries?
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Graduate Is Gravity Only a Force on Earth or a Geometry Problem as Well?
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Graduate How Can You Derive the Lorentz Equations from Basic Assumptions?
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Graduate Geodetic precession and parallel transport
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Graduate Frame Independance of acceleration ?
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Graduate How does SR cause the speed of light to be constant?
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Graduate Is a Black Hole the Most Dense Object in the Universe?
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Graduate Black holes and extended horizons
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Undergrad Why cant you go faster than the speed of light?
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Undergrad Time Slows Down in Refractive Materials?
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Graduate Creating a FAQ: Questions about the Universe
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Graduate What are the properties of Minkowski spacetime geodesics?
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Graduate Does relativistic mass induce gravity?
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Graduate Variational methods on Lagrangians (D'Inverno Chapter 11)
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Graduate Gravity and its effect on time
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Graduate Rotations in general relativity?
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Graduate Equivalence Principle question
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Graduate Gauging Poincare to obtain Einstein gravity
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Graduate Make sure the Lagrangian symmetry？
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Undergrad Where Does the Energy That Produces Gravity Come From?
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Graduate Why Do Objects Gain Mass at High Speeds and Seek Minimum Energy?
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Graduate How can general relativity be used to calculate quantitative answers?
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Graduate Clock in isotropic gravitational field
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Graduate Trying to understand GR and density
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Graduate Question: Does and/or Can Gravity exist indepent of objects?
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Graduate Could Time Be a Tiny Curled-Up Dimension in String Theory?
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Graduate Cumulative expansion based on H0 since T = 0
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Graduate Schwarzschild metric as induced metric
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High School Can You Stand Still in Time Without Movement in Space?
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Graduate Do Photons Have Mass? Confused Student Seeks Answers
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Graduate Is Circular Space Contraction Due to Relativity or a Classical Effect?
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Undergrad Einstein's Postulates: Origin of Ideas
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Graduate Stability of relativistic double star system
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Graduate Black Holes & Time: Literal or Figurative?
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Graduate Can Einstein's equations fully explain gravitational anomalies in galaxies?
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Graduate Proof of the non-existence of ether
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Graduate Timelike vs. null vs. spacelike four-current
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Graduate Is Minkowski Metric a Constant Riemann Metric in Finsler Geometry?
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Graduate Explaining Mercury's Precession: Understanding the Role of General Relativity
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Undergrad What happens if we cut this rope off?
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Graduate Exploring Historical Context of GR Predicted Gravitational Redshift
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Graduate Understanding Angular Momentum in Space | SR/GR and Centrifugal Force Explained
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Graduate Constancy of the speed of light (locally)
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Graduate Heuristic approach to the Schwarzschild geometry - Accident of deeper meaning?
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Graduate Challenging the Role of Photons in Explaining Light's Particle Behavior
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Graduate Is this a paradox in Special Relativity?
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Graduate Derivation of Thomas Precession formula
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Graduate Curved Space-Time and the Speed of Light
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Graduate Experimental verification of GR: Light bending
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