Flame, electricity and the camera; man's progress from the first kindling of fire to the wireless telegraph and the photography of color (1901)
Iles, George, 1852-1942 · New York, Doubleday & McClure co. · leaf 241
metallic circuit be not onlyunbroken, but un-impaired through-out. No part of hisduty has more se-verely taxed theresources of theelectrician than to discover the breaks and leaks in hisocean cables. One of his methods is to pour electricity, as itwere, into a broken wire, much as if it were a… … Plate IV From photograph by London Stereoscopic Co.LORD KELVIN. CHAPTER XV MULTIPLEX TELEGRAPHY AS long as rays of light were the sole resource of theX\^ signaller, all that he did, or could do, was to send asingle message at a time. When telegraphy passed fromlight to electricity as its agent, it…
Fire · Electricity · Color photography
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
