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 165
\\\\\\\ |l///////^^sending an alternating cur- /^| rent of high intensity y^W through the tube from one ^/////, 11 \\\\\^ electrode to the other, thegas commences to gleam,and through a spectroscopeits characteristic lines and bands come clearly into view. Ina second and similar tube the electrodes… … Fig. 46. Glass sphere luminous between two metal plates. the lightning of the sky; moved farther and farther from the tube, and may finallybe soldered to large sheets of metal forming walls as muchas fifteen feet apart; with pulses of redoubled tension any-where within these walls, the tubes or…
Fire · Electricity · Color photography
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