This Quantum World

Contents /print version Cover and interwiki links Atoms What does an atom look like? Like this? Or like this? Quantum states Fuzzy observables Serious illnesses require drastic remedies Planck Rutherford Bohr de Broglie Schrödinger Born Heisenberg The Feynman route to Schrödinger Two rules An experiment with two slits Why product? Why is the absolute value inverse proportional to the distance? Why is the phase proportional to the distance? Calculating the interference pattern Bohm's story Hidden Variables Propagator for a free and stable particle The propagator as a path integral A free particle A free and stable particle Meaning of mass From quantum to classical Action Geodesic equations Principle of least action Energy and momentum Lorentz force law Whence the classical story? Schrödinger at last The Schrödinger equation: implications and applications How fuzzy positions get fuzzier Time independent Schrödinger equation Why energy is quantized A quantum bouncing ball Atomic hydrogen Observables and operators Beyond hydrogen: the Periodic Table Probability flux Entanglement (a preview) Bell's theorem: the simplest version A quantum game The experiment of Greenberger, Horne, and Zeilinger ... Author(s) Appendices Probability Basic concepts Some problems Mathematical tools Elements of calculus A definite integral Differential calculus: a very brief introduction Taylor series The exponential function The indefinite integral Sine and cosine Complex numbers Vectors Fields Gradient Curl Divergence How to solve problems in quantum physics The ABCs of relativity The principle of relativity Lorentz transformations (general form) Composition of velocities Proper time An invariant velocity The case against K>0 The case against K=0 The actual Lorentz transformations Lorentz contraction and time dilation 4-Vectors Quantum mechanics Mechanics Physics T 100%