Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 380
Fig. 232 a. A moveable weight can slide on a graduated horizontalarm attached to the beam, and a pointer at the end of thisarm shews when the beam is in its horizontal position. … Fig. 232 6. On passing the current through the coils the beam isdeflected, and the weight must be shifted to bring the pointerback to its sighted position. The couple deflecting the beam is proportional to thesquare of the current, that restoring it is proportional to thedistance the weight has…
Electricity · Magnetism
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
