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 575
Figs. 6 and 7. one or more negative plate than positive in every cell.The negative (pole) plates are of a grayish color, and the positives are gen-erally light brown when new. The free pole at one end of the series will, inconsequence of this, be a positive, that of the other end being a negative.…
Electrical engineering
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