Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 276
elf a magnet. It willhold up pieces of iron, mag-netize steel, or if suspendedso as to turn freely, willpoint north and south. Sotwo helices will attract andrepel each other, like mag-nets, as is shown by Fig. 329. The Earths Magnetism. This last phenomenon, in con-nection with the production of… … Fig 329. HEATING EFFECTS. 267 This produces a current of electricity to the west, whichbeing beneath the needle deflects the north pole to the left,or North. Heating Effects. 901. The heat produced by the battery is due to the re-sistance which the current meets on its passage. This isin two…
Physics
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