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...J. Wiley & Sons, 1893 - 368 ページ |
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according æther amber Aristotle attracts iron axis Book called cause centre Chalybes Chap CHAPTER coacervation coition degrees Dict direction distance diurnal diurnal motion earth earth's poles east effluvia effluvium electric energy equal equator equinoctial circle experiments fixed stars float friction Gilbert greater heat heavens Hence Hipparchus horizon humor instrument iron wire latitude load loadstone loadstone's London Magnesia magnetic bodies magnetic force magnetic movements magnetic needle magnetized iron mariner's compass mass matter ment meridian meridian circle metals moon motion move nature netic north pole obliquity observations Petrus Peregrinus philosophers piece of iron plane Porta position precession primum mobile produced properties Ptolemy quadrant reason regions repel revolution right line rotation round rubbed says Sedini siderites south pole sphere spherical stone substance surface tend terrella things tion true turn variation versorium verticity virtue weight whole