Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book . ^gen, formingwith the zinc, oxide of zinc,which in turn combines withthe potash to form a doublesalt of zinc and potash, whichdissolves as rapidly as it is. Fig. 91.—Edison-Lalande and copper oxide in causticpotash solution. formed. The hydrogen lib-erated by the decompositionof the water reduces thecopper oxide to metallic copper. The reduced copper isof great purity and can again be converted into copper is important to see that the oxide plates are entirely sub-
Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book . ^gen, formingwith the zinc, oxide of zinc,which in turn combines withthe potash to form a doublesalt of zinc and potash, whichdissolves as rapidly as it is. Fig. 91.—Edison-Lalande and copper oxide in causticpotash solution. formed. The hydrogen lib-erated by the decompositionof the water reduces thecopper oxide to metallic copper. The reduced copper isof great purity and can again be converted into copper is important to see that the oxide plates are entirely sub-merged in the caustic potash solution. Heavy paraffin oilis poured on top of the solution, so as to form a layer aboutone-quarter inch deep on the surface, to keep out the oil is not used creeping salts are formed and the lifeof the battery is reduced fully two-thirds. The E. M. F. islow, only of a volt, but the internal resistance is also verylow, so that quite a large current can be drawn from the is made in a number of different sizes, ^| 140. 92. Chloride of Silver Cell.—This cell is another exam-ple of the single fluid type with a solid depolarizer, and isused extensively in portable testing sets where a large num-ber of small cel
Size: 1429px × 1748px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1901
