1. A means to have an identical image of a scene on the right and left eye of any given observer at the same instant in time and changing said image by a succession of moving images resulting from a relative horizontal motion of the scene/camera and at a rate consistent with persistence of vision causing intersecting rays from any given object location point in said scene to determine the spatial location of said object location point in said scene in the playback of the scene while allowing the brain to cognize the depth information already contained in said succession of moving images as it cognizes the motion contained in said succession of moving images by means of persistence of vision