ACTORS’ BREATH MADE VISIBLE FOR WINTER FILM SCENES (Sep, 1934)

ACTORS’ BREATH MADE VISIBLE FOR WINTER FILM SCENES
Motion pictures of winter scenes may be made realistic by a device that makes the actors’ breath visible, just as it would be at low temperatures. The device resembles false teeth. It enables the actors to keep Dry Ice in their mouths without harmful results. The warm breath causes the Dry Ice to give off vapor not unlike that produced by persons breathing in cold weather. The device does not interfere with speech.

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