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 23
string E. When the open end of thetube A is placed before the mouth, the vibrations of the mem-brane C, caused by the varying sound waves constitutingarticulate human speech, are transmitted with mechanicalaction by the string E to the membrane D and set up in thelatter vibrations corresponding to… … c> ov*j-c obe to o •y d * S.I3-S to g£ o .»a g.S § rt «^ »8« SS>£ 8 M_^3 « co •E-s <« c S c3 o C c <U°rj 3 5 00 0) os <o»dt-< c <u<N-° g , rt£ 1*3.8* 1vj X- . as a -^SS-gg rSIgS-8 OS CD ~ -2 £ -g 5-85--I « . CO wP (/)O 3 wcy*d THE TELEPHONE 2,117 In the electric telephone,…
Electrical engineering
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