Flame, electricity and the camera; man's progress from the first kindling of fire to the wireless telegraph and the photography of color (1901)
Iles, George, 1852-1942 · New York, Doubleday & McClure co. · leaf 176
oluble, and dissolve in the liquid as fastas they are formed, and this simple fact has, up to the present, barred the wayto any substantial progress with these classes of reversible cells. 146 ELECTRIC BATTERIES As a storage cell is charged and discharged it offers bafflingproblems of chemical… … FiG. 49.Positive and negative plates, Electric Storage Battery C^., Philadelphia. binations into which zinc, iron, or copper freely enter. Theactive lead material needs a grid or support of inactivestructure, which may be several times its own weight.And further, the formation of sulphate screens…
Fire · Electricity · Color photography
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