Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 201
roperates by the current developed by the oscillations in the receiving circuit instead ofthe pressure established therein as is the case with those of the coherer type. Furthermore,its action is thermic and not electrolytic. In other words all the resistance in the con-ducting medium is… … X * CM CJD lO to x / ^S ^ - J J>U- — *■* * Hi bwS cw+J o.S^ Mfg wSij^sgg-g-g « « K^ v--! SR C^ ,3 O, u & ft rSflgJSo ^a 3^ art 5T2^
Electrical engineering
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