Professor Eric Laithwaite: The Circle of Magnetism - 1968

https://blogs.imperial.ac.uk/v....ideoarchive/eric-lai
Professor Eric Laithwaite (1921-1997) of Imperial College London demonstrates some of the most difficult concepts in electricity &​ magnetism.

This is one of a series of 16mm colour films made for schools. They were all made in Eric Laithwaite's "Heavy Electrical Laboratory" in the Electrical Engineering Department at Imperial College London.