Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 243
Fig. 124.—Law of inverse squares. these forces diminish at those distances. The usual form ofstatement is: Hie force varies inversely as the square of thedistance. This helps us to answer the question, Why should a sliverof iron move toward a magnet ? The magnet polarizes the 220 PHYSICS … Fig. 125. sliver of iron, so that the pole of the sliver nearest to thepole of the magnet is unlike it, and therefore they attracteach other; the farther pole of thesliver is like the pole of the magnet,and therefore they repel each other.But the attraction is greater than therepulsion, because the…
Physics
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