# Dielectric materials and electrostatics

An introduction to the physics of electrical insulation, this book presents the physical foundations of this discipline and the resulting applications. It is structured in two parts. The first part presents a mathematical and intuitive approach to dielectrics; various concepts, including polarizatio...

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Main Author: eBook English London : ISTE : Wiley, 2013. Electrical engineering series. CONNECT CONNECT
• Cover; Title Page; Contents; Foreword; Chapter 1. Mathematical Examination of Dielectrics; 1.1. Introduction to dielectrics; 1.1.1. Polarization; 1.1.2. Ionization; 1.1.3. Polarized dielectrics; 1.1.4. Electrical induction; 1.1.5. Move from one dielectric to another; 1.1.6. Move from a dielectric to a conductor; 1.1.7. Energy contained in a dielectric; 1.2. Perfect dielectrics; 1.2.1. Refraction of force- and induction-lines; 1.2.2. Field in the vicinity of a charged conductor; 1.2.3. Electrostatic pressure; 1.2.4. Corresponding elements; 1.2.5. Equilibrium in a system of conductors.
• 1.2.6. Capacities and influence coefficients1.2.7. Calculation of the interstitial field; 1.2.8. Depolarizing field; 1.3. Forces exerted on polarized dielectrics; 1.3.1. Forces exerted on a rigidly-polarized solid dielectric; 1.3.2. Forces exerted on a solid perfect dielectric; 1.3.3. Forces exerted on a liquid dielectric; 1.3.4. Electrostriction; 1.4. Dielectric losses; 1.5. Residual charges; 1.6. Electrets; 1.7. Characteristics of an insulator; 1.8. Pyro and piezo-electricity; 1.8.1. Pyroelectricity; 1.8.2. Piezoelectricity; 1.9. Currents in extended conductors; 1.9.1. Current density.
• 1.9.2. Expression of Ohm's law in an extended conductor1.9.3. Conservation of current density; 1.9.4. Distribution of current in an extended medium; 1.9.5. Power dissipated by the Joule effect; 1.9.6. Resistance of the conductive medium; 1.9.7. Deviation of the electrical current when crossing the surface separating two conductors; Chapter 2. Physical Examination of Dielectrics; 2.1. Gaseous dielectrics; 2.1.1. Reminder of the properties of gases; 2.1.2. Ionization; 2.1.3. Examination of the conditions of initiation of self-sustaining discharge; 2.1.4. Corona discharge effect.
• 2.1.5. Use of gases as insulators2.2. Liquid and solid dielectrics; 2.2.1. Conductivity; 2.2.2. Physics of polarization; 2.2.3. Dielectric losses; 2.2.4. Breakdown of solid dielectrics; Bibliography; Appendix 1. List of Figures; Appendix 2. List of Symbols; Appendix 3. List of Useful Values; Appendix 4. Reminder about Dielectric Spectroscopy; Appendix 5. Reminder about Transitory Currents; The Authors; Index.