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 181
gnetic energy surpass Hght,—that it is not hindered by anydense or opaque body, but goes out freely and diffuses itsforce every whither. In the case of the terrella and in aspherical loadstone the magnetic energy extends outside thebody in a circle; yet in the case of an oblong loadstone itdoes not… … CHAPTER VIII. OF THE GEOGRAPHY OF THE EARTH AND THE TERRELLA. We have next to speak of magnetic circles and magneticlimits, so that what follows later may be better understood.Astronomers, in order to account for and observe the move- GEOGRAPHY OF THE EARTH. 12$ merits of the planets and the…
Magnetism
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