M1-1315APT3

Definition Si Motion Picture Projection Set

A group of related components which together form a complete system for projecting 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 for changing speed for sound or silent projection. See also projector, motion picture, silent and sound and projector, motion picture, sound.