For investigation of electric field patterns due to various electrode configurations. Permits easy demonstration of the related concepts to a group of students using an overhead projector.
The apparatus comprises a clear plastic dish and a transparent rectangular base carrying a pair of 4mm socket terminals that can also hold adjustable electrodes.
Includes a set of 6 electrodes: two point source, two line (parallel) source and two circular rings of 35 and 70mm diameter respectively.