The ʻOpus majusʾ of Roger Bacon, Volume 1

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Williams and Norgate, 1900
 

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Halaman 375 - Their names are Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricornus, Aquarius, Pisces; the whole occupying a complete circle, or broad belt, in the heavens, called the Zodiac.
Halaman xiv - MS. at the end of the sixteenth or beginning of the seventeenth century. A glance at the MS.
Halaman lxxii - ... that the ratio of the sines of the angles of incidence and refraction is constant for refraction in the same medium, was effected by Snell and Descartes.
Halaman 302 - Caspium mare habitare praecepit ; quos usque in hodiernum diem amplissimis generis sui incrementis consistere atque exinde quandoque erupturos opinio est. Et magister in historiis addit, quod Alexander magnus conclusos ibi invenit, et ob malitiam eorum arctius eos constrinxit, quos tamen egressuros circa finem mundi testatur, et magnam stragem hominum esse facturos.
Halaman lii - England, Michael Scot, Hermann the German, William of Moerbeke, otherwise called the Fleming. Of these, Gerard, Scot, and Hermann translated from Arabic versions. Gerard spent many years in Spain, attained a thorough knowledge of Arabic, and translated Ptolemy's Almagest, and Aristotle's Meteorologies, also the astronomy of Alfraganus, several works of Alkindi, and, almost certainly, the Optics of Alhazen. He died in 1187. Michael Scot flourished in the first half of the thirteenth century. He was...
Halaman 292 - ... elongationem a sole, sed frigus multiplicat humores ; et ideo a polo in polum decurrit aqua in corpus maris et extenditur inter finem Hispaniae et inter principium Indiae non magnae latitudinis, et vocatur Oceanus ; ut principium Indiae possit esse multum ultra medietatem aequinoctialis circuli sub terra accedens valde ad finem Hispaniae. Sed ne...
Halaman 105 - Sed in mathe- ^PJL°f cer" matica possumus devenire ad plenam veritatem sine errore, et ad omnium certitudinem sine dubitatione : quoniam in ea convenit haberi demonstrationem per causam propriam et necessariam.
Halaman 66 - Burgundos multiplici variatur idiomate. Et quod proprie dicitur in idiomate Picardorum horrescit apud Burgundos, immo apud Gallicos viciniores : quanto igitur magis accidet hoc apud linguas diversas? Quapropter, quod bene factum est in una lingua, non est possibile ut transferatur in aliam secundum ejus proprietatem quam habuerit in priori. Unde Hieronymus, in epístola de óptimo genere interpretandi, sic dicit, ' Si ad verbum interpreter, absurdum resonat...
Halaman xxv - One man I know, and one only, who can be praised for his achievements in this science. Of discourses and battles of words he takes no heed: he follows the works of wisdom, and in these finds rest. What others strive to see dimly and blindly, like bats in twilight, he gazes at in the full light of day, because he is a master of experiment. Through experiment he gains knowledge of natural things, medical, chemical, indeed of everything in the heavens or earth. He is ashamed that things should be known...
Halaman lxxvi - treats of the generation of things from their elements, and of all inanimate things — as of the elements and liquids (humores) simple and compound; common stones, gems, and marbles ; gold, and other metals ; sulphur, salts, pigments, lapis lazuli, minium, and other...

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