. Bulletin. Science. Figure 3.—Volta's "crown of cups" (at top) and his voltaic pile. From Philo- sophical Transactions oj the Royal Society of London, 1800, vol. 90, plate opposite p. 430. experimenter had "to hasten to complete his experi- ments before the power had materially ; " Two years later William Pepys built two troughs (fig. 9) with 130 pairs of zinc and copper plates, each plate being 6 inches square.^" Each trough was charged ' Benjamin Silliman, First Principles oJ Chemistry, Philadelphia, 1847, p. 115. If William Cruickshanks, "Descrip
. Bulletin. Science. Figure 3.—Volta's "crown of cups" (at top) and his voltaic pile. From Philo- sophical Transactions oj the Royal Society of London, 1800, vol. 90, plate opposite p. 430. experimenter had "to hasten to complete his experi- ments before the power had materially ; " Two years later William Pepys built two troughs (fig. 9) with 130 pairs of zinc and copper plates, each plate being 6 inches square.^" Each trough was charged ' Benjamin Silliman, First Principles oJ Chemistry, Philadelphia, 1847, p. 115. If William Cruickshanks, "Description of Mr. Pepys' Large Galvanic Apparatus," Philosophical Magazine, 1803, vol. 15, pp. 94-96. with dilute "nitrous ; In 1807 Humphrey Davy used three such batteries to separate sodium and potassium frorn their compounds.'' One battery had 24 pairs of copper and zinc plates 12 inches square; n Humphrey Davy, "On Some New Phenomena of Chemical Changes Produced by Electricity, Particularly the Decomposi- tion of the Fixed Alkalies, and the Exhibition of the Nevvf Substances which Constitute Their Bases; and on the General Nature of Alkaline Bodies," Philosophical Transactions, 1808, vol. 98, pp. 1-44. 236 BULLETIN 228: CONTRIBUTIONS FROM THE MUSEUM OF HISTORY AND TECHNOLOGY. 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
Size: 2288px × 1092px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorunitedstatesdepto, bookcentury1900, booksubjectscience
