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Silent And Sound Motion Picture Projector

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An optical device which projects a succession of light images upon a screen to present the illusion of motion of the original subject. It has provision for the reproduction of sound from an optic and/or magnetic sound track on the same film and the changing of speed for sound or silent projection. It is normally used for audience entertainment and/or instruction. See also VIEWER, STILL PICTURE. View more Silent And Sound Motion Picture Projector