Abstract
WHILE experimenting with the photophone it occurred to me that the fact that the resistance of crystalline selenium varies with the intensity of the light falling upon it might be applied in the construction of an instrument for the electrical transmission of pictures of natural objects in the manner to be described in this paper.
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BIDWELL, S. Tele-Photography . Nature 23, 344–346 (1881). https://doi.org/10.1038/023344a0
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DOI: https://doi.org/10.1038/023344a0