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 420
of rays ultra-violet and ultra-red. But thelay mind knows little of the persistence and address of theaccomplished physicist, and can only marvel at the modein which he summons fresh resources from points of thecompass at first seeming the farthest removed from histask. In Chapter VIII it was said… … THE WONDERFUL BOLOMETER 347 refined this instrument into an appliance which he stylesthe bolometer. Its delicate wire, much thinner than ahuman hair, through which an electric current constantlypasses, and sensitive to much less than the ten-millionth ofa degree Centigrade, is moved by minute steps…
Technology · Fire · Electricity · Photography
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