Basic electromagnetic field theory

Abstract

The mention of any type of field theory tends to raise fears of incomprehension in the minds of most practitioners of magnetic particle inspection, technologists and even many engineers. The reason for this is that field theory involves some fairly advanced mathematics involving vectors and calculus which are not widely understood. It must be remembered that while this mathematician’s playground produces a large number of vital results describing fields in their general form, parts of the field and even specific points in the field, the equations and calculations are mathematical expressions of physical effects.