Austin, Louis W. (Louis Winslow), 1867-1932, Thwing, Charles B. (Charles Burton), 1860-1946, joint author · Boston, Allyn and Bacon · leaf 80
ion ELECTRICITY AND MAGNETISM. 67 of the arrow. If the rockers dip in A and B, the currentin Gc will be reversed. Connections. — Wires should be connected either bythe regular binding-screws provided for the purpose orwith mercury cups. Their ends should be scraped so thatthey are bright, and if… … Fig. 25. Amalgamation of Zinc. — First clean the zinc, and placeit in dilute H2 S04 until effervescence begins, then place itin another dish, and pour a little mercury over it. Toomuch mercury will render the zinc rotten, so only enoughshould be used to cover the surface. GALVANOMETERS. The Pointer…
Physics
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