Davis's manual of magnetism : including galvanism, magnetism, electro-magnetism, electro-dynamics, magneto-electricity, and thermo-electricity (1854)
Davis, Daniel · Boston : Palmer and Hall · leaf 146
right sideand descends on its left side, because the heat isapplied to the right junction of a and to the left ofh. Each of them now presents a north pole towardsthe north pole of the magnet, the currents circulatingin the opposite direction to that of the hands of awatch. They consequently both… … 130 DAVISb MAN UAL . III. IN REFERENCE TO THE EARTH. 206. A magnetic needle so suspended as to moveonly horizontally, assumes, when left to itself, a deter-minate direction with respect to the earth. Its polesplace themselves nearly in a plane passing throughthe geographical poles of the earth ;…
