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 137
resonator as a means of detectingelectric waves. It was based on the discovery of INI. E. Branly andothers, that the enormous resistance offered to the j^assage of anelectric current by powders and metal filings is greatly reduced underthe influence of electric oscillations. The resishuice of such… … 10. Righi Oscillator 118 BATTERY COHrRFR »XVSi Fis;. 11. TvOflge Coherer THE DEVELOPMENT OF RADIOTELEGRAPHY 25 tlint this provides a simple means of Illccliiiii; (lie openilioii of atranslating deviee by acting as a valve in turning on, as it were, agreater current in a local battery circuit. By…
Electrical engineering
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