ionbetween the horse-shoe and the battery is brokenthis power is lost, and the weight Avhich the ironhas been supporting will drop down at once. Experiment 65.—Take a bit of hard steel, such asa knitting needle, and attach it to the iron of thehorse-shoe in tlic last experiment while the current… … i- 47 14G SCIENCK PRIMERS. [ELECTBIiaED louud lilt middle by means of a very fine silk thread,and let it swing horizontally, it will always point inone direction, and this direction will be nearly northand south. The needle wnll, in fact, have become acompass needle, always pointing in one…
Physics
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