Last June, successful tests were made transmitting pictures by telephone (TIME, June 2). The process was to have a light impulse transmitted to an electrical impulse and back into a light impulse. The transmitted to an electrical impulse and face of a picture, taking successive light impulses from it in lines as it went repeatedly across the film. At the receiving end, the same device reversed cast a varying ray of light on a photographic film as it went across its surface on adjoining lines.
Last week, a successful attempt was made to...
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