The electric field of a dielectric heating work circuit

The electric field of the simplest type of work circuit of a dielectric heater is considered, in which the lower capacitor plate is larger than the upper. For a given frequency, the rate of heating at any point is proportional to the square of the electrical intensity at that point. It is desirable to know the extent of the fringing effect and the relation between size of specimen and size of capacitor plate for uniform heating. The paper describes the theoretical investigation of this type of field, and some experiments on field plotting using an electrolytic analogue.