Shows the effect of vibrations on other objects. Sound Recording & Reproduction

Duration: 10 min

Year Published: 1943

Creator: Encyclopaedia Britannica Films

Format: Filmstrip

Sound: Sound

Description: 1943. 16sd-$50. EBFilms. Demonstrates sound converted into light rays to produce sound motion pictures, and then how the projector is able to change the light rays back to sound waves. Sound recording by vari- able area and sound recording by variable density are visualized.

Complete Record: Category: Physics Subcategory: B&W Type: Slide Film Source: EBFilms Price: $50. Format code: 16sd

Metadata Source:Index of Training Films 1946