Because the viewing surface of current television sets is not a separate screen but the glass end of a huge vacuum tube, even an 8½-by-11-in. picture represents a considerable engineering triumph. But prospects of families crowding to peer at this tiny view have long worried prospective television advertisers, discouraged prospective set owners, stumped designers. Last week in Manhattan. RCA-Victor demonstrated its postwar answer. Operating like movies on the principle of projection, with a reflecting optical system like that used in observatory telescopes and a new high voltage tube only five inches in diameter, the RCA set produced a clear, bright picture...
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