American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 45
re. In all of the foregoing it has been assumed, as intimated, that the resistance ofthe connecting wires w, is so low as to be negligible; when, in 23ractice, this is not thecase, the resistance of those wires must be included, in calculating, by Ohms law, theresulting strength of current,… … the disadvantage exists that after the feet of thezinc have been consumed, the internal resistancebecomes so great that a new zinc must be sup-plied. With the wasteless zinc the stub is usedin the cell until none of it remains. Each zinc, asshown in Fig. 15^, is furnished with a tapered postwhich…
Telegraph
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