Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 702
Description of the telegraph.—Fig. 3390 represents a series of twelve pairs of Groves battery, suchas is generally used in connection with the telegraph. When a plate of platina and a plate of zinc areplaced in an acid solution, a current tends to flow from the platina to the zinc, through any… … TELEGRAPH. G93 which may be so disposed as to connect the two. In thi represented, con listing of r pairs, the zinc of each of which is I with the platina of the next. It may be considered that a current is produced by each of these pair-, which has, howevi r. to tlow in thuDd fall in with all the…
Mechanical engineering
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