Word: phosphors
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Dates: during 1950-1959
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Behind the line-covered viewing screen is a "grid" of fine parallel wires, one wire for each group of phosphor lines. At the narrow rear end of the tube is a single electron gun that shoots a slender beam of electrons through the wire grid at the viewing screen. As in all television tubes, the electron beam scans at a rapid rate, painting an ever-changing picture on the screen of phosphors...