Word: vitascan
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Educated Floodlight. Du Mont's "Vitascan" system uses what looks like a TV camera with a conventional lens, but instead of taking light in, the "camera" shoots light out, acting like a highly educated floodlight. The source of light behind the lens is a luminescent surface that glows brightly when struck by a hair-thin beam of electrons. The electron beam scans back and forth, covering the whole surface in a small fraction of a second. The spot of light that it creates is projected on the scene by the lens, scanning it like the beam of a small...