Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 199
r and slowlymove a small compass needle about it. ...-«>-..., The action of the two poles of the mao^net on the poles of the needle ^i 3,^ will cause the latter to set itself at no. 228.-Position a.-sumed by • I 1 T 1 1 • ^ needle near a bar-magnet. various points along lines which in-dicate the… … of the needle at several points, as ^Yell as a line of forceextending from one pole to the other. Another way to map the field is by means of iron filings. This is very simple and very effective. Place a sheet of paper over the magnet, and sift from a muslin bao- iron filings evenly and thinly over…
Physics
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