a large-screen television projector in which the intensity of a beam of light is modulated by deformation of an oil film, which forms a reflecting and scattering surface, the deformation being caused by an electron beam modulated by a video signal Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=723-07-81
a large-screen television projector in which the intensity of a beam of light is modulated by deformation of an oil film, which forms a reflecting and scattering surface, the deformation being caused by an electron beam modulated by a video signal