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The final links between telegraphs and television occurred with M. Senlacq of Ardres, France in 1878, who proposed that the changes in electrical voltage produced by selenium when scanning a document, could magnetically control a pencil at the receiving end of the transmission. en
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- The final links between telegraphs and television occurred with M. Senlacq of Ardres, France in 1878, who proposed that the changes in electrical voltage produced by selenium when scanning a document, could magnetically control a pencil at the receiving end of the transmission.
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