A course of experiments in physical measurement (1897)
Whiting, Harold, d. 1895 · Boston, D.C. Heath and Co. · leaf 429
both when their north poles areturned in the same direction and when turned inopposite directions.^ 1 See Experiment 40 in the Elementary Pliysical Experimentspublished by Harvard University. 398 MAGNETISM. [Exp. 72. EXPERIMENT LXXII. MAGNETIC FORCES. 5[ 180. Determination of the Strength of… … Fig. 197. in the opposite pan (a). A second magriet (^gJi) isto be placed directly under the first, and parallelto it. The north poles are at first to be turned in oppo-site directions, so that the magnets may attract eachother. Small blocks (h and, CT) are now placed be- 1180.] MAGNETIC FORCES.…
Physics
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