Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 284
passing through the tube, they are said to cohere. Marconiscoherer is able to detect the merest trace of electromagneticwaves, is not liable to get out of order, and may be easilyreplaced when defective. Wireless telegraphy 230. Fig. 130 showsthe first receiving stationfor electromagnetic… … = EA8*TV reducing the enormous resistanceA current from a battery is enabledto flow through the coherer, and then through the externalcircuit, where it energizes the magnets of a telegraph relay,thereby closing another circuit (not shown in illustration) con-taining a telegraphic recorder and…
Electrical engineering
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