The theory of audio frequency magnetic or electric fields. II. Applications and errors

Abstract

For pt.I see Southeastcon '98, p.194-7 (1998). A need exists for a rigorous definition of the kinds of fringing fields found near power lines and appliances such as computer monitors and television receivers. Part I paper gave abstract but rigorous definitions for AC magnetic fields, AC electric fields, and true, radiated, electromagnetic fields. The theoretical reasons for the negligible radiated electromagnetic field near audio frequency devices are given. To give an alternative to using the acronyms ELF and VLF, the use of "audio frequency" and "supersonic frequency" is proposed. Reasons are given to avoid the jargon use of "electromagnetic fields" and "extremely low frequency fields." The theoretical physics approach to power line safety problems is based on the mathematical theory of boundary values on partial differential equations. The theory for correctly evaluating the power line fringing magnetic fields is sketched.