Through animated drawings and photography explains the hypothesis that electricity consists of unit elementary charges. Demonstrates the conduction of electricity through solutions, gases, and vacuum: Faraday’s laws; movement of charges in vacuum tubes: operation of photoelectric cells: and reproduction of sound on film. For high school and college groups.

We digitized and uploaded this film the A/V Geeks Archives. Email us at footage@avgeeks.com if you have questions about the footage and are interested in using it in your project.

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