Electricity experimentally and practically applied; a book for the beginner and for the practical man, principles, experiments, practical applications and problems (1910)
Ashe, Sydney Whitmore · New York, D. Van Nostrand company · leaf 168
e instrument is low,varying from 60 to 100 ohms. Referring to Fig. 200, itwill be noted that the instrument consists of steel magnetssurrounding a movable suspension. Inside of some sus-pensions is placed a soft iron core, which tends to facilitatethe passage of lines of force. In the ballistic… … Fig. 200. — Galvanometer. (O. T. Louis Co., N. Y.) Upon the telescope is also mounted a scale which isreflected from a small mirror placed on the galvanometermovement. With a deflection of the galvanometer, thisscale seems to move across the field in the eyepiece, thereflection traveling. How to…
Electricity · Electrical engineering
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