Merchant, F. W. (Francis Walter), 1855-1937, Fessenden, Cortez, b. 1852 · Toronto : Copp, Clark · leaf 293
this way thanthe soft iron, but unlike the soft iron, which possessesmagnetic properties only while under the direct influenceof the inducing magnet, it retains its polarity after themagnet is removed. 11. Retentivity. The retentivity, or the power to resist demagnetization,is very small in soft… … Fia. 228. Fig. 229. of keepers. These are pieces of soft iron, which areused to join the poles of the magnet when not in use.Each pole of the magnet induces the opposite kind ofpolarity in the end of the keeper in contact with it, andthese opposite poles attract each other and tend topreserve the…
Physics
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