Description: Presented by Dr A T Churchman of the Electricity Research Laboratory, Capenhurst. Part 2 picks up where part 1 left but with a small gap between recordings so some content missing. This was possibly the Newcastle lecture as there is reference to a Newcastle butcher in the film. It is also in colour whereas part 1 is black and white.

Part 2 opens with Maxwell's equations. Dr Churchman then follows with examinations of magnetic fields and their interactions between conductors and non-conductors. In addition to the many live practical demonstrations there are clips of experiments in the laboratory and cartoon graphics to aid the presentation. There are several references to Michael Faraday's experiments and reconstructions of these for a modern audience moving on to modern appliances such as the microwave oven. The lecture ends with a discussion about metallurgy and a film clip of plasma jets from the surface of the sun to highlight the power of the sun.