Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 252
it, butthe battery current cannot flow until the arrivingwaves cause the receiver to complete the pathfor the electricity. In making and breaking thiscurrent flow, the receiver actually repeats thesignals despatched from a long way off, and inthis fashion dots and dashes representing lettersare… … THE GARDNER TORPEDO-SUBMARINE—CONTROLLEDBY SOUND WAVES. are put to service. In wireless telegraphy, allthat is asked of the receiver is to repeat a mes-sage; in telautomatics, the wireless message de- 154 WIRELESS WIZARDRY [Dec. mands action upon the part of mechanisms ca-pable of exerting a good…
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