Electricity for public schools and colleges (1891)
Larden, W. (Walter), b. 1855 or 6 · London : Longmans · leaf 45
in it the tangent gives the direction of the force at this point in the field. Now if we put into the field a needle sosmall that we can consider itstwo ends to be practically inthe same part of the field,then the needle will be actedupon by a couple, and it willturn until it lies in a straightline… … Fu
Electricity
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
