CATHODE RAY "A beam of electrons streaming from the negatively charged end of a vacuum tube (the cathode) toward a positively charged plate (the anode)."
ICONOSCOPE "A television camera tube in which a beam of high-velocity electronsscans a photoemissive mosaic."
IMAGE DISSECTOR "A form of television camera tube in which an electronimage produced by a photoemitting surface is focused in the plane ofan aperture and deflected past the aperture to achieve scanning."
FIBER OPTIC CABLE "A cable made of optical fibers that can transmit large amounts ofinformation at the speed of light."