Flame, electricity and the camera; man's progress from the first kindling of fire to the wireless telegraph and the photography of color (1900)
Iles, George, 1852-1942 · New York, Doubleday & McClure co. · leaf 246
un-impaired through-out. No part of hisduty has more se-verely taxed theresources of the Fig. 62. Siphon recorder. MmrnAAJ^^yv/^A^ Fig. 63.Siphon record. Arrived yesterday. electrician than to discover the breaks and leaks in hisocean cables. ( hie of his methods is to pour electricity, as itwere,… … 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 theJL\^ 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,…
Technology · Fire · Electricity · Photography
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