EMF: Electromagnetic Field (1962)

The film discusses an experiment conducted by Professor Fredman and Dr. Madson, which investigates the heating of a copper target when bombarded by electrons. Using a setup similar to the Millikan experiment, they measure the temperature increase of the target with varying conditions, including plate separation and current. The findings suggest that the energy dissipation does not depend on the geometry of the apparatus but rather on the number of electrons impacting the target. The film also explores the concept of electromotive force (EMF) from batteries, emphasizing that EMF represents the energy transferred per elementary charge and is crucial for understanding energy conversions in electric circuits.

Keywords
electrons, heating, copper target, Professor Fredman, Dr. Madson, Millikan experiment, energy dissipation, plate separation, electromotive force, batteries, energy conversion

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