electricity

electricity

Science In Business (1945)

3h ago
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Description

Reel 1 briefly describes early studies and experiments in geometry, chemistry, and electricity. Shows the pyramids. Describes the melting of metal in a foundry, the machining of tungsten, use of light metals in aircraft production, the generation of electricity by sunlight, and Dr. Langmuir's experiments with oil film. Reel 2 describes consumer research. Charts depict consumer preferences. President Roosevelt addresses Congress. Citizens are interviewed for a political poll. Shows office activity in the Advertising Research Foundation; pollsters for Fortune, Gallup, and Roper at work; the G.M. customer research office; and a spokesman analyzing research problems. Educational Film, no. 221 National Archives Identifier: 24394 Local Identifier: 111-EF-221 Creator(s): Department of Defense. Department of the Army. Office of the Chief Signal Officer. (09/18/1947 - 02/28/1964) (Most Recent) From: Series : Educational Films, compiled 1942 - 1947