Abstract: A three-dimensional display apparatus electromechanical system for displaying three-dimensional images without special viewing aids is disclosed. The electromechanical apparatus includes three flat surface screens, two rotating wheels or single screen not limited to other variations that will enable similar operation of the apparatus. The imaging system includes a CRT or similar device and control system to generate two-dimensional images to project the images at different depth locations through a focus system on to the moving projection screens.

Abstract: A lamp for recessed ceiling mounting consisting of a ceiling aperture lining flange defining an air dam receiving space; a mounting plate fixedly attached to and extending outwardly from the upper end of said flange; a ballast; spirally threaded screws removedly mounting the ballast upon the mounting plates; a concave air dam having an interior flourescent tube receiving space; a plurality of friction clips connecting the air dam to said flange, said clips positioning the air dam within said flange's air dam receiving space; a flourescent light tube; and a plurality of spring clips mounting the flourescent light tube within the interior space of the concave air dam.