Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 36
and because of the poisonous gases it produces.— The grovecell (fig. 8) is the same as the Bunsen, substituting platinumfor carbon. E. M. F. = 1*95 volts, intern, resist.^ 0*15 ohm. Depolarization is effected in these cells as follows: Thehydrogen liberated at the zinc plate, is oxidized in… … Fig. 8. 36 MODERN ELECTRICITY caustic potash dissolved in water. To protect the liquid fromthe carbonic acid in the air, it is covered with paraffine oil.The oxygen in the copper oxide readily combines with thehydrogen gas, thus efficiently preventing polarization. Thiscell is very useful for…
Electrical engineering
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