Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 160
Figure 136. — How to Magnetize a Piece of Iron. 2 They have a tendency to contract, like rubber bands,and will contract until they are zero in length. 3. They repel one another laterally. 130. Theory of Magnetism. — Some substances are saidto be magnetic, while others are non-magnetic. Magnetic … Figure 137. — Field between Two Unlike Poles. substances are substances whose molecules have N- and S-poles, while non-magnetic substances are those whose mole-cules do not have N- and S-poles. 150 MAGNETISM Iron is the most magnetic substance, while cobalt andnickel are only slightly magnetic.…
Physics
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