Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 235
226 ELECTEICITY. Names of the Poles. A magnet suspended so as to swingfreely, comes to rest pointing north and south. The endwhich points towards the north is called the North Pole, andthe other the South Pole. Imperfect magnets frequentlyhave poles between the ends, separated by neutral…
Physics
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