Elementary lessons in electricity and magnetism (1906)
Thompson, Silvanus P. (Silvanus Phillips), 1851-1916, Schwetzky, Otto H. L. [from old catalog] · Chicago, Thompson & Thomas · leaf 120
it round ^^s- 58. into the magnetic meridian, for the N. - seeking pole is urged northwards, and the S.-seeking pole is urged southwards, with an equal and opposite force. The force acting on each pole is the product of the strength of the pole and the intensity of the field, that is to say, of the… … CHAP. 11.] FXECTRICTTY AND MAGNETISM. 103 place. We will call the strength of the N.-seeking polem; and we will use the symbol H to represent theforce exerted in a horizontal direction by the earthsmagnetism. (The value of H is different at differentregions of the globe.) The force on the pole A…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Vnderweysung der Messung : mit dem Zirkel vn[d] Richtscheyt in Linien, Ebnen vnnd gantzen Corporen (1525)](https://img.insideoutlibrary.com/img/200/ia-vnderweysungderm00drer-50-90.webp)