Advanced undergraduate text presupposes some knowledge of electricity and magnetism, making substantial use of vector analysis. A serious development of electrodynamics on a postulational basis that clearly defines each concept. 1960 edition.

Parry Moon (1898-1988) was a Professor of Electrical Engineering at MIT. Domina Eberle Spencer is Professor Emeritus of Mathematics at the University of Connecticut. The professors coauthored several engineering texts.