The electromagnetic wave has been on and around the Earth (and everywhere else) since time immemorial. this work aims to make some inroads on the subject and certainly gain an appreciation of this inexplicable wonder. Our subject is a complicated one so the first chapters are needed to discuss its nature and how it behaves. Then in a more practical way the later chapters centre on radio waves in their freedom in ground, sky and satellites applications, followed by waves not so free in waveguides, optical fibres and heating. Altogether a round-up of the better known escapes of the electromagnetic wave requiring no more than elementary mathematics, but presuming that the reader has some basic knowledge of electronics.

Table of Contents

Electromagnetics; the accelerating charge; wave geometry; genesis; freedom; constraint. Appendices: conditions for return of an electromagnetic wave from the ionosphere; propagation or radio waves in free space; the isotropic antenna; the electron-volt; the photon.