Wright, Mark R., 1854- · London : Longmans · leaf 148
pend a soft iron nail over it horizontally by means of a silk fibre. Magnetic Induction 139 The nail sets parallel to the magnetic axis of the magnet. Bringa bar magnet near each end of the nail in turn (fig. 132). The end of the nail over the N-seeking pole is repelledby the S-seeking pole of the… … Fig. 132. the horse-shoe magnet round, so that the positions of its polesare reversed. At once the poles of the soft iron nail are reversed. Repeat the experiment, substituting a piece of hard steelfor the soft iron nail. The magnetism, if any, is of the feeblestdescription. But again, if the steel…
Physics
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