A dictionary of electrical words, terms and phrases (1896)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W.J. Johnston company · leaf 389
See Electrode, Nee-die.) Needle, Elongation of —A phrase sometimes used for the angular deflection ofa needle. Needle, Magnetic A straight bar-shaped needle of magnetized steel, poisednear or above its centre of gravity, and freeto move either in a horizontal plane only, orin a vertical plane only,… … Fig. 405. Magnetic Needle. in the mariners compass. This form of magneticneedle is the one most commonly employed. For use as a mariners compass the needle issupported on gimbals and placed in a box pro-vided with a card on which are marked thepoints of the compass. (See Compass, Azimuth.Compass,…
Electricity · Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
