ForewordPrefaceChapter I. Introduction 1. Phase Velocity and Group Velocity 2. Examples and Discussion: Dispersive Media 3. Groups and Signals 4. Signal Velocity, First Attempts 5. Actual Measurements of the Velocity of Light 6. Havelock's Pamphlet 7. General RemarksChapter II. About the Propagation of Light in Dispersive Media 1. Introduction and Results 2. The Incident Signal 3. General Solution of the Problem 4. Discussion of the Obtained Solution 5. Uniqueness of the Solution and Boundary Conditions 6. The ForerunnersChapter III. About the Propagation of Light in Dispersive Media 1. How to Use the Saddle-Point Method of Integration 2. Examination of the Complex n-Plane 3. Location of the Saddle Points A. The Region about the Origin B. Saddle Points Far from the Origin 4. Successive Motion of the Saddle Points as a Function of Time. Choice of the Path of Integration 5. The Forerunners A. Saddle Points near the Origin B. Saddle Points at a Great Distance 6. Signal Velocity 7. Summary of Results 8. The Method of the Stationary Phase Compared to the Saddle Point MethodChapter IV. Propagation of Electromagnetic Waves in Material Media 1. Definitions: Role of a Dielectric Coefficient Depending on Density and Temperature 2. Dependence of the Dielectric Coefficient on Frequency; Evaluation of the Electrical Energy 3. Waves; Phase Velocity; Energy Density of a Plane Wave 4. The Group Velocity U 5. Velocity of Energy Transport U1 6. Signal Velocity, S 7. The Forerunners 8. Summary of the Most Important Results; Generalization to Other Types of WavesChapter V. Wave Propagation in a Dispersive Dielectric 1. Formula of Lorentz-Lorenz 2. Material Medium of Low Density, Consisting of Harmonic Oscillators 3. Propagation of the Waves in the Medium 4. The Velocities U, U1, and S in the Medium 5. The Forerunners 6. A Real Transparent Medium, Having Several Absorption Bands 7. Quantized Atomic States, Kramers' Dispersion Formula 8. The Relation between the Problem Treated and the Analogous Technical ProblemsChapter VI. Waves in Wave Guides and Other Examples 1. Guided Waves 2. Acoustic Waves 3. Rectangular Tube 4. Physical Significance of Guided Waves 5. Electromagnetic Guided Waves 6. Some Other Typical ExamplesAuthor IndexBooks Published by L. Brillouin