Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 29
16 SYMBOLS, UNITS, INSTRUMENTS. … zinc plate is in the form of a cone, and is placed in the hottom of a porouscup inside a glass jar. The carbon plate is outside the porous cup. About two ounces of mercury are placed in the porous cup with the zinc,for amalgamation, and the cup is filled with a dilute solution of sulphuricacid. The…
Electrical engineering
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