Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 443
of counteracting currents, and essentially diminish the intensity of the excitation. Toobviate this disadvantage, and also to keep the zinc plates clean and bright, Mr. Sturgeon originally ap-plied a coating of mercury to the surface of the zinc. This coating serves also to prevent the… … ELECTRICITY. 435 what might he theoretically anticipated; for, instead of protecting the zinc hy preventing the imme-diate contact of the acid, it is found that the oxidated particles of zinc are withdrawn from heneath it,leaving the surface of the mercury olean and bright. The zinc is more rapidly…
Mechanical engineering
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