Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 215
he apparatus. The receiving endoffered no ffreat obstacle, since it was known at an earlv date thatmany of the detectors used in connection with radiotelegraphy wouldj)rove suitabl(> for the reception of speech—providing that a meanscould be discovered to effect the emission of wave-trains… … WIRELESS TELEPHONY 5 distant diaphragm to repeat sympathetically the vibrations of a dia-phragm against which the energy of the soiinds to he transmitted isdirected. In both cases the efficiency of the various transformationsof enero;v involved in the process is of prime importance.…
Electrical engineering
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