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 426
ts superior light distributing qualities. Outer globes can also be obtained in dense opal, light opal, or clearglass. Almost all indoor lamps except those of the metallic arc or flam-ing arc type do not require outer globes, but their use is imperativewith all types of outdoor lamp.1 Reflectors and… … <o
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
