Dr. Vladimir Zworykon, photographed with the cathode ray scanning tube he invented as a substitute for the scanning disc and neon lamp, commonly used in the older systems of television.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19310724.2.6.2
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Radio Record, Volume V, Issue 2, 24 July 1931, Page 1
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30Dr. Vladimir Zworykon, photographed with the cathode ray scanning tube he invented as a substitute for the scanning disc and neon lamp, commonly used in the older systems of television. Radio Record, Volume V, Issue 2, 24 July 1931, Page 1
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