William Gilbert of Colchester, physician of London, On the loadstone and magnetic bodies and on the great magnet the earth. A new physiology, demonstrated with many arguments and experiments .. (1893)
Gilbert, William, 1544-1603, Mottelay, Paul Fleury, b. 1841, tr, Wright, Edward, 1558?-1615 · New York, J. Wiley & sons · leaf 251
uenorth part of the stone is south, and turns to the north pole ofthe stone A if it be near; if it be at a distance from the stone,it turns to the earths north. So whenever iron is magnetizedit tends (if free and unrestrained) to the portion of the earth* opposite the part toward which inclines the… … D \^m/mmmi/^ the opposite verticity to that of the pole B of the stone; andall the crotches in the present figure have a verticity oppositeto that of the pole E, and are made to move and are seized byE when they are in suitable position. The case is as in theoblong stone FH, cut in two at G, where…
Magnetism
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