DescriptionErnst Ruhmer demonstrating simple television system (1909).jpg
English: Photograph of Ernst Ruhmer demonstrating his experimental television system, which was capable of transmitting the images of simple shapes using a 25-element selenium cell receiver. The original caption read "Ruhmer's new apparatus for transmitting light by selenium cells."
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Illustration included in "Another Electric Distance-Seer", Literary Digest, September 11, 1909, page 384.
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copyright tag indicating the copyright status in the source country. Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Ernst_Ruhmer_demonstrating_simple_television_system_(1909).jpg
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