Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 632
in to decline somewhat more_gradually than it rose, as indicated by the descending branch of the curvein Fig. 302. A little reflection will show the unsuitability for such currents of 58o THE ELECTRIC TELEGRAPH. instruments which require a fixed strength to work them. We may remarkthat, supposing a… … Fig. 301.—Atlantic Telegraph Cable. before this intensity would be reached, and then, after putting the cable to>earth; he would have to wait some seconds before the current had flowedout. Several seconds would, therefore, be taken up in the transmission of
Inventions
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