Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 429
hieved a notable success in the fixation ofnitrogen of the air. In this furnace a large surface of contact ofair and arc is attained. The principle is illustrated in Fig. 46, Two * An exhaustive treatise on the utilization of atmospheric nitrogen is published by theDepartment of Commerce and Labor,… … \^mw Fig. 46. Diagram of the Electric Circuit in the Birkeland-Eyde Electric Furnace source of alternating pressure of 5000 volts. The high tension arcwhich is first produced quickly breaks down to a low voltage arc carrying a heavy current.This low voltage arc is avoidedby an ingenious method…
Electrical engineering
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