20 October 1940 Factual 12 mins
The science of hearing is explained with animated diagrams of the human auditory system.
Watch the official How the Ear Functions 1940 trailer in HD below or find more How the Ear Functions videos on Vidimovie.
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Douglas Harlon as Narrator (voice)
United States 20 October 1940
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14 June 1940
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28 May 1940
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Artwork, screen shots, trailers and other imagery is © 1940 American College of Surgeons.