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Part Of The Opus Tertium Of Roger Bacon Including A Fragment Now Printed For The First Time

Author : Roger Bacon
ISBN : 1230429859
Genre :
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 edition. Excerpt: ... as affirmatum is required. 10 These words are underlined in W. n Cf. Topica, i. 12, 2. 12P. et ita. 1 P. XVIIII: om. librnm. Vf. om. titles throughout. 3 P. hujus. DE Decem Necessariis Que Ad Visum Requiruntur. Cap. 1. DEINDE in 4, 5 a et 6 distinctione, procedo ad ulteriora istius3 scientie, et primo declaro que exiguntur ad visum. Nam sunt novem;4 quoniam species rei vise est primum, de qua dictum est in prioribus. 2m est lux, sine qua nichil videri potest; et causas hujus signo veras, reprobando& falsas. 3m est distantia. Nam sensibile positum super sensum non sensitur6; cujus causam assigno; et quot miliaria potest a remotis videri,7 et in plana terra, et in altiore monte. 4m est oppositio recta visibilis respectu visus, quando fit visus sine reflexione,8 sed tamen audimus et olfacimus undique; et hoc est mirabile et ignotum. 5m est quod quantitas rei vidende exigitur debita; sed quantum possit ad plus videri ab oculo, estimant perspectivi quod 4te g celi, et hoc si oculus esset in centro terre. Et hic faciunt perspectivi maximam vim, et curiosissimam movent10 dubitationem, et errant multum, sicut probo per rationes et experientiam. Nam non potest videri 4 tota ab oculo, ec in centro, ec alibi, sed fere 4to; et hoc est propter dispositionem oculi, sicut declaro. 4 P. decern. 5 P. reprobo. P. videtur. 7 P. W. videre. 8 P. add. etfractione. 9 P. quartam. I0 W. om. movent. 6m quod ad visum exigitur specialiter est ut visibile, quod per se et de se natum est facere speciem suam in visum, quod vocamus communiter objectum visus et visibile, sit minus rarum medio videndi, quod est aer, et ideo minus rarum igne et orbibus celestibus, qui sunt medium in visu; sed non oportet esse minus rarum aqua;...

Roger Bacon And The Sciences

Author : Jeremiah Hackett
ISBN : 9004100156
Genre : Science
File Size : 61.80 MB
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A major updating of scholarship on the philosophy and thought of Roger Bacon. In particular, it treats his philosophy of language, science and mathematics, moral philosophy, medicine, physics and metaphysics, and his history and sociology of religion.
Category: Science

Fr Rogeri Bacon Opera Qu Dam Hactenus Inedita

Author : Roger Bacon
ISBN : 139111339X
Genre :
File Size : 63.52 MB
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Excerpt from Fr. Rogeri Bacon Opera Quædam Hactenus Inedita: Containing: I. Opus Tertium, II. Opus Minus, III. Compendium Philosophiæ Stratford in Essex, in l729, where his father had settled shortly before. Dr. Samuel J ebb is favourably known to students of English history by his Life of Mary Queen of Scots, ex tracted from the original records, a work still high in repute, and by his edition of Bacon's Opus Majus, published in 1738, and dedicated to Dr. Mead. He died in the enjoy ment of a comfortable fortune, ac quired by his profession, on the 9th of March 17 72. The brother of whom he speaks, in his prefice to the Opus Majus, as first drawing his attention to a copy of that work among the mss. Of Trinity College, Dublin, was undoubtedly Dr. John J ebb, the Dean of Cashel, fither of the Cambridge reformer. A wasp ish notice of him occurs in Hearne's Reliquim, p. 665, under the year 1727. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Roger Bacon And The Defence Of Christendom

Author : Amanda Power
ISBN : 9780521885225
Genre : History
File Size : 56.44 MB
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The English Franciscan Roger Bacon (c.1214–92) holds a controversial but important position in the development of modern science. He has been portrayed as an isolated figure, at odds with his influential order and ultimately condemned by it. This major study, the first in English for nearly sixty years, offers a provocative new interpretation of both Bacon and his environment. Amanda Power argues that his famous writings for the papal curia were the product of his critical engagement with the objectives of the Franciscan order and the reform agenda of the thirteenth-century church. Fearing that the apocalypse was at hand and Christians unprepared, Bacon explored radical methods for defending, renewing and promulgating the faith within Christendom and beyond. Read in this light, his work indicates the breadth of imagination possible in a time of expanding geographical and intellectual horizons.
Category: History

Roger Bacon

Author : Brian Clegg
ISBN : 9781472112125
Genre : Biography & Autobiography
File Size : 26.70 MB
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Back in thirteenth-century Europe, in the early years of the great universities, learning was spiced with the danger of mob violence and a terrifyingly repressive religious censorship. Roger Bacon, a humble and devout English friar, seems an unlikely figure to challenge the orthodoxy of his day - yet he risked his life to establish the basis for true knowledge. Born c.1220, Bacon was passionately interested in the natural world and how things worked. Such dangerous topics were vetoed by his Order, and it was only when a new Pope proved sympathetic that he began compiling his encyclopaedia on everything from optics to alchemy - the synopsis took a year and ran to 800,000 words and he was never to complete the work itself. Sadly, the enlightened Pope died, and Bacon was tried as a magician and incarcerated for ten years. Legend transformed Bacon into a sorcerer, 'Doctor Mirabilis', yet he taught that all magic was based on fraud, and his books were the first flowering of the scientific thinking that would transform our world. He advanced the understanding of optics, made geographical breakthroughs later used by Columbus, predicted everything from horseless carriages to the telescope, and stressed the importance of mathematics to science, a significance ignored for 400 years. His biggest contribution was to insist that a study of the natural world by observation and exact measurement was the surest foundation for truth. Clegg uncovers the realities of life in a medieval university and friary, setting out the shadowy facts of Bacon's life alongside his writings. The result is both a fascinating biography and a picture of the age.
Category: Biography & Autobiography

Fr Rogeri Bacon Opera Qu Dam Hactenus Inedita

Author : Roger Bacon
ISBN : 9781108042451
Genre : History
File Size : 32.11 MB
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Published in 1859, these works by medieval philosopher Roger Bacon (c.1214-92?) show the range of his intellectual interests.
Category: History