This post is from a low-reputation account and contains an unverified outbound link. Be cautious before clicking external links.
The wonders of magnetism and the linear motor are captured in this 1975 presentation by Professor Eric Laithwaite (1921-1997) former Professor of Heavy Electrical Engineering at Imperial College London.
For more: http://www2.imperial.ac.uk/blog/video...
▶️ DTube
▶️ YouTube