Atoms and Light: Interactions

1 Introduction and History.- 2 Classical Radiation.- 3 The Oscillating Charge.- 4 Scattering of Radiation from a Charge Driven by an Electromagnetic Field.- 5 Intensity, Energy Density, the Poynting Vector, and Their Spectral Distributions.- 6 The Interaction of a Beam of Electromagnetic Radiation with a Free Electric Charge-The Compton Effect.- 7 The Quantum Structure of the Atom.- 8 The Einstein A and B Coefficients.- 9 The Semiclassical Treatment of Stimulated Absorption and Emission.- 10 The Semiclassical Description of Spontaneous Decay.- 11 The General Optical Transition.- 12 The Photoelectric Effect.- 13 Optical Coherence and Counting Statistics.- 14 What Is Light?.- Appendix 1 Time Averaging.- A1.1. Truncated Time Averaging.- A1.2. Exponential Averaging.- A1.3. Averaging over a Finite Time Interval.- A1.4. The Energy Density and Spectral Distribution of "Broad-Band" or "White" Light.- A1.5. The Monochromatic Field.- A1.6. The Modulated Field Arising from the Coherent Superposition of Two Frequencies.- Appendix 2 Ensemble Averaging.- Appendix 3 The Zero-Point Vacuum Field.- References.- Appendix 4 An Invariant form for Angular Momentum-Justification for Eq. (6.17).- Appendix 5 Functions.- A5.1. The Dirac Delta Function.- A5.2. The Exponential and the Lorentz Functions.- A5.3. The Square Pulse and the Fraunhofer Function.- A5.4. The Peaked Functions.- Appendix 6 Wave Functions and Bra-Kets.- Appendix 7 The Density of Waves in a Box.- A7.1. The Density of Electromagnetic Field Modes.- A7.2. The Density of Free Particle States.