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 391
uit increases the continuity of action about 1,800 times. 2,482 HAWKINS ELECTRICITY of the development of Geissler tubes for commercial purposes.Geissler tubes are sealed tubes of glass containing highly rarefiedgases and provided with platinum electrodes which, usually,extend through the glass to… … FlG. 3,410.—Cooper-Hewitt direct current lamp. The tube A is supported by two clamps B, B,attached to a lamp rod C fixed parallel to the tube and pivoted at D to the main stemwhich is screwed into the ceiling crowfoot. The inductance and resistance coils, etc., arealso supported by the stem and…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
