Ternant, A. L. (Alcide Ludovic), 1832-1884 · London ; New York : G. Routledge and Sons · leaf 235
TELEGRAPHIC APPARA TUS. 2i 7 cases a water resistance is interposed in the receiving circuit. This is formed of two tubes (fig. 155) within which hangs a gutta-percha covered wire terminated by pieces of platinum. According as the wire is raised or lowered, the resistance of the circuit is… … to have them more ample ; this apparatus enables each to gratify his particular taste. On long lines it is necessary to interpose a condenser in the circuit, so as to do away with the effects of induction. This condenser is placed either in the circuit of the apparatus itself, oris placed at the…
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