Television Journal November 1934 Page 490-491
These pages include descriptions and
illustrations of pre-war mechanical television modulation,
persistence of Vision, Isochronism, Scanning Dics, Mirror Drum,
Chopper Disc, Kerr Cell, Gas-discharge lamps, Neon Lamp,
Crater-point Lamp, Recording Lamp, Positive-column Lamps,
Mercury-vapour Lamp, Phasing, Synchronising Gear, Synchronising
Valve, and Synchronising Transformer.
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