Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 160
in ;and for want of a better name they are said to be strains inthe ether. If a piece of paper is placed over a bar magnet and ironfilings are sifted on it, the filings will arrange themselves inlines as shown in Figure 131. Figure 132. — Arrangement of Mole-cules in a Piece of Iron Not… … Figure 134. — Arrangement of Mole-cules in a Magnetized Piece of Iron. Figure 135. — Unbal-anced Forces in a Mag-netized Piece of Iron. 1. They have direction and always come out of a X-poleand go in at a S-pole, completing a loop inside the magnet.
Physics
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