of north polar- north pole of the needle turned round 90° toward the north Vs 15^° ity. In other words, when a steel rod is brought near a pole of the demagnetizing magnet. After this ope- 15>f magnet it is magnetized, and the end of the steel rod nearest 12° ration the needle had had its magnetic… … from the magnet after its demagnetiza- DEMAGNETIZING A WATCH. pole of the magnet, N. The reverse tion it had its magnetism lowered, direction of stroking will demagnetize so much less magnetic force being it, that is, if the north end of the mag- required to demagnetize than to magnetize a magnet.…
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