This book covers in detail some existent theories and innovative concepts revolving around dielectric materials and technology. The various advancements in this area are glanced at and their applications as well as ramifications are looked at in detail, in this text. Dielectric materials are those materials which are used to hold electrostatically charged objects because they are bad conductors of electricity. These materials are generally known as electric insulators and they can be polarized by applied electric field. Some of the common dielectric materials are glass, mica, rubber, porcelain, dry air, etc. As this field of study is emerging at a rapid pace, the contents of this book will help the readers understand the modern concepts and technological developments related to the subject. Students, researchers, experts and all associated with this field will benefit alike from this book.