ABSTRACT
In this chapter, we briefly review some basic concepts that are used in the chapters that follow. Theorems on electrostatics are included as an introduction to the study of the influence of electric fields on dielectric materials. The solution of the Laplace equation to find the electric field within and without dielectric combinations yields expressions that help to develop the various dielectric theories discussed in subsequent chapters. The band theory of solids is discussed briefly to assist in understanding the electronic structure of dielectrics, and a fundamental knowledge of this topic is essential to understand conduction and breakdown in dielectrics. The energy distribution of charged particles is one of the most basic aspects that are required for a proper understanding of the structure of the condensed phase and electrical discharges in gases. Certain theorems are merely mentioned without a rigorous proof, and the student should consult a book on electrostatics to supplement the reading.
