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 211
dies are more forcibly attracted by an oblong stonethan by a round one, provided only the pole of the stone is atthe extreme end of its length. The reason is that in theoblong stone the magnetic body at the extremity is directedstraight toward a body wherein the force proceeds in rightlines and…
Magnetism
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