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 253
. Thus, itsdirective tendency in respect to theearth is neutralized, so as to allow it toremain at rest in any position, and sorendering the influence of the galvanicflow more perceptible. 222. The poles of a magnet, as hasbeen already shown, observe certain in-variable positions, in reference to… … What does Fig. 198 represent? Describe the Astatic Needle. State theformula of Ampere. 248 ELECTRO-MAGNETISM. face towards the inagnet^ and the electric current flowingfrom his Jtead toward his feet; the north j)ole of the mag-net will always be toward tlte right hand. By bearing inmind this simple…
Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
