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 175
resent instance attention will be calledto those forms only which have proved themselves of practical value. Wave-detecting devices may be classified for convenienceaccording to the physical principle on which they act, such as thermo-electric, magnetic, electrolytic, chemical, photo-electric,…
Electrical engineering
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