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Scientists May and Smith experiment with selenium and light, this reveals the possibilty for inventors to transform images into electronic signals.
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Boston civil servant George Carey was thinking about complete television systems and in 1877 he put forward drawings for what he called a selenium camera that would allow people to see by electricity.
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Bell's Photophone (used light to transmit sound) and he wanted to advance his device for image sending.
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Sheldon Bidwell experiments with his Telephotography that was similiar to Bell's Photophone.
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Paul Nipkow sends images over wires using a rotating metal disk technology calling it the electric telescope with 18 lines of resolution.
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At the World's Fair in Paris, the first International Congress of Electricity was held. That is where Russian Constantin Perskyi made the first known use of the word "television."
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Boris Rosing combines Nipkow's disk and a cathode ray tube and builds the first working mechanical TV system.
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Campbell Swinton and Boris Rosing suggest using cathode ray tubes to transmit images. Independent of each other, they both develop electronic scanning methods of reproducing images.