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 285
pieces of iron wire, of equal length, cut offthe same coil of wire, and let one be excited by the armed end,the other by the unarmed end: it will be found that they beginto move and make a perceptible inclination toward the load-stone at the same distances: this can be ascertained by meas-urement…
Magnetism
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