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 514
t is usually put up inthe form of pressed bars which are dipped into paraffine and thenwrapped in paraffine paper. This treatment makes it air tight, andprevents it slacking until it is being used, when it is disintegratedwith slight pressure, and slacking in the air gives the metal a… … DYNAMO
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
