The outlines of physics: an elementary text-book (1897)
Nichols, E. L. (Edward Leamington), 1854-1937 · New York, The Macmillan Company; London, Macmillan & Co., Ltd. · leaf 300
-pelled by it (Fig. 249). Keep-ing fihis end of the bar asnearly as possible- in its posi-tion, swing the other endround so as to bring the barinto an east and west position,where it will be at right anglesto-the lines of the earths field.Note that its repellent powerupon the north-seeking pole… … Fig. 249. Fig. 250. 286 THE OUTLINES OF PBTSICS The end which, when it was down, became a north-seeking polehas now become a south-seeking pole, by virtue of its change ofposition, and it attracts instead of repelling the north-seeking pole ofthe floating needle. Whereas the lines of force which…
Physics
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