About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 98. Chapters: Theory of relativity, Spacetime, Black hole, Inertial frame of reference, Faster-than-light, Principle of relativity, World line, Invariant mass, Proper time, Four-momentum, Criticism of relativity theory, Relativity priority dispute, Rindler coordinates, Sagnac effect, Ehrenfest paradox, Bell's spaceship paradox, Causal structure, Absolute time and space, Einstein synchronisation, Four-vector, Electromagnetic tensor, Coordinate time, Gravitational time dilation, Lorentz scalar, Light cone, Newman-Penrose formalism, Relativistic dynamics, Four-velocity, Scale relativity, Causality conditions, Presentism, Electromagnetic four-potential, Nonsingular black hole models, Poincare group, List of black holes, Supplee's paradox, Proper length, Jackiw-Teitelboim gravity, Four-acceleration, Abraham-Lorentz-Dirac force, Liouville gravity, Einstein group, Four-gradient, Weyl scalar, Relativistic plasma, Four-current, Four-force, Light cone coordinates, Signature change, List of mathematical topics in relativity, Cooperstock's Energy Localization Hypothesis, Hyperbolic motion, Event, Relativistic Mechanics, Very special relativity, Bunch-Davies vacuum, Invariant speed, Gauged supergravity, Tetrad formalism, Dust, Kaluza-Klein black hole, Four-tensor. Excerpt: A black hole is a region of spacetime from which nothing, not even light, can escape. The theory of general relativity predicts that a sufficiently compact mass will deform spacetime to form a black hole. Around a black hole there is a mathematically defined surface called an event horizon that marks the point of no return. It is called "black" because it absorbs all the light that hits the horizon, reflecting nothing, just like a perfect black body in thermodynamics. Quantum mechanics predicts that black holes emit radiation like a black body with a finite temperature. Thi...
