of a Magnet. —Take the piece of steel wire, six inches long and direction and their south poles in the opposite direction, so vibrating the cardboard, by letting fall vertically on it a one sixteenth of an inch in diameter, mentioned among the that the body, as a whole, may obtain and retain its… … wire will have north polar- FeO. 24.-MAGNETIC CUEVES AS SHOWN BY lEON FILINGS. ductively on a cylinder of soft iron, 33 ity, as may be shown by ap- millimeters long and 10 millimeters in plying the wire to the magnet- (o diameter. In April, 1871,1 published in the American Jour- netic polarity.…
Patents · Magnetic · Bushels · Grain · Needle · Scientific American · Pole · Provisional protection · Magnetic field · North Pole · Steam engine · Export edition · Small steam · American export · Patent office · Iron filings
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