The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies (1856)
Sprague, A. W. (Alfred White), 1821-1891 · Boston : Phillips, Sampson & Company · leaf 256
counter attraction ofthe opposite pole, it w^ill be driven forward or backw^ard, accord-ing to the direction of the current, in a straight line betweenthe two forces, to the positions indicated by the dotted lines;and, upon leaving the mercury, the circuit will be broken,causing the wire to fall by… … EflFect of submitting the conducting wire to the action of both poles of amagnet ? Explain Fig. 201. Why does the wire continue to -vibrate? SPUR-WHEEL. 251
Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.