Vision By Radio Radio Photographs Radio Photograms

C Francis Charles Francis Jenkins

The book Vision By Radio Radio Photographs Radio Photograms was written by author C Francis Charles Francis Jenkins Here you can read free online of Vision By Radio Radio Photographs Radio Photograms book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Vision By Radio Radio Photographs Radio Photograms a good or bad book?

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Amstutz, of Valparaiso, Indiana, U. S. A. , in the author's opinion, stands out as the most con spicuous, not only for fine work, but for the cleverness of its accomplishment, the first successful picture being sent in May, 1891, over a 25-mile wire in eight minutes.
"Mr. Amstutz was not the first to send pictures over wire, but he was the first to send pictures with halftones, the others were simply line drawings. In this first method Mr. Amstutz used a relief photo graph. The amount of relief... was in direct propor tion to the amount of light which had acted on the sensitive gelatine, resulting in an irregular surface, representing in elevation all the variations of light and shade in a regular picture.
"The picture received is actually a phonographic spiral around the receiving drum carrying the celluloid sheet. When finished it is removed from the cylinder and flattened out and a stereotype or electrotype made from it for relief printing; or the engraved celluloid sheet can be inked and printed immediately on the intaglio press.

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