. Bulletin. Science. TIMTEBZ. Figure 7.—How a French cartoonist imagined the lodger of the future would be given his electric "candle" by the concierge. From VIllustration, September 30, 1848, vol. 12, p. 69. time, and so other means of regulating the carbons were sought. Joseph Lacassagne and Rodolphe Thiers devised a difTerential arc light regulator in which the current resulting from the difference of two controlling circuits fed the moving carbon at the proper speed (figs. 14, 15). By a battery of 60 Bunsen cells, Lacassagne and Thiers successfully illuminated a square in
. Bulletin. Science. TIMTEBZ. Figure 7.—How a French cartoonist imagined the lodger of the future would be given his electric "candle" by the concierge. From VIllustration, September 30, 1848, vol. 12, p. 69. time, and so other means of regulating the carbons were sought. Joseph Lacassagne and Rodolphe Thiers devised a difTerential arc light regulator in which the current resulting from the difference of two controlling circuits fed the moving carbon at the proper speed (figs. 14, 15). By a battery of 60 Bunsen cells, Lacassagne and Thiers successfully illuminated a square in their home city of Lyons in 1855, and the following year they lit up the Arc de I'Etoile and the Avenue des Champs Elysees for four hours in a vain attempt to interest Napoleon III in their invention. After successful trials at Lyons again, where they used two lamps to light the Rue Imperiale during the evenings for the entire month of March 1857, Lacassagne died; in the same year the Societe d'Encouragement pour ITndustrie Nationale awarded a bronze medal for the Lacassagne and Thiers regulator. Thiers sought to exploit the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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Keywords: ., bookauthorunitedstatesdepto, bookcentury1900, booksubjectscience
