Table of Contents

Setting the Scene; Light: 'Aether' and the Special Theory of Relativity; Thermal Radiation and Planck's "Energy Elements"; Einstein and the Quantum; The Quantum in the Atom: Optical Spectra; Einstein's Transition Probabilities: Bohr's Theory and Planck's Law; Wave Mechanics; Matrix Mechanics; Complementarity, The Uncertainty Principle and the Copenhagen Interpretation; Indeterminacy and Entanglement.