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the head of Argus with a hundred eyes, and
Minerva holding a shield reflecting the head of Medusa. Then, at the beginning of each of six sections are Rubens' drawings describing Aguilon's experiments, one of which is the first known picture of a photometer This is one of six experiments drawn by Rubens and shows how intensity of light varies with the square of distance from the source. The experiment was later taken up by Mersenne and another Jesuit, Claude de Chales, and eventually led to Bouguer's more famous photometer. It is evident, from the detail that he put into his drawings, how enthused Rubens was about the subject matter, perspective geometry and optical rules.
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In
Aguilon's book the beginning of each section had works of the Flemish Baroque painter, Peter Paul Rubens. The frontispiece at the beginning of the book shows an eagle, referring to Aguilon's name and a variety of optical and geometrical images. On either side of the title stands Mercury holding
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Third book, any other point D on its circumference which lies closer to the observer than C, will subend an angle ADB which will equal angle ACB. Therefore, objects at C and at D are judged equally far from the eye. But this is false, because point C is farther away than D. Therefore a judgment of
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had already published optical theories years before him, Aguilon decided to share his insights on geometric optics. At the age of 20, the Dutch poet
Constantijn Huygens read Aguilon's and was enthralled by it. He later said that it was the best book he had ever read in geometrical optics, and he
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while being charged with organizing the teaching of geometry and science which would be useful for geography, navigation, architecture and the military arts in
Belgium. His superiors wanted him to synthesize the work of Euclid, Alhazen, Vitello, Roger Bacon and others. Although he died before
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of both eyes and parallel to the line between the eyes. In other words, it describes how only objects on the horopter are seen in their true location. He then built an instrument to measure the spacing of double images in the horopter as he saw fit.
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In the few years the school was based in
Antwerp it brought forth a first rate mathematician like Jan-Karel della Faille. ... Another important pupil of the school of mathematics was Theodore Moretus (1602–1667), son of Petrus and Henriette
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If objects fall upon different rays it can happen that things at different distances can be seen at equal angles. If point C be directly opposite the eyes, A and B, with a circle drawn through the three points, A, B, and C. By theorem 21 of
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Bosmans, Henri, S. J. (1902), "Deux lettres inédites de Grégoire de Saint-Vincent publiées avec des notes bibliographiques sur les œuvres de Grégoire de Saint-Vincent et les manuscrits de della Faille",
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It required the combined brilliance of geometricians as diverse as
Alberti, Leonardo, Dürer, De Caus, Aguilon, and Accolti to lay the groundwork, and the genius of Gerard Desargues to accomplish.
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Elements of Plane and
Spherical Trigonometry: With Their Applications to Heights and Distances Projections of the Sphere, Dialling, Astronomy, the Solution of Equations, and Geodesic Operations
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At first glance, it seems that
Aguillon discovered the geometrical horopter more than 200 years before Prevost and Vieth and Muller. The horopter was then used by architect
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311:. In fact the title of Constantijn Huygens' first publication imitated Aguilon's title (omitting letters p and c): Otiorum Libri Sex (1625).
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theory that only light rays orthogonal to the cornea and lens surface are clearly registered. Aguilon was the first to use the term
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Innovation and
Experience in the Early Baroque in the Southern Netherlands: The Case of the Jesuit Church in Antwerp
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Gillispie, Charles. C. ed., Dictionary of
Scientific biography. 16 vols. New York: Charles Scribner and Sons, 1970
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In Aguilon's book there are elements of perspectivities as well as the stereographic projections of
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distance is false when based on the angles between converged axes, quod erat probandum.
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successfully treated projections and the errors in perception. D'Aguillon adopted
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completing the book, it still consists of six in-depth books, called
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François De Aguilon, S.J. (1546 to 1617) And his Six books on Optics
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is useful for philosophers and mathematicians. It was published by
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for a Jesuit mathematical school; in 1616, he was joined there by
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Belgian Jesuit mathematician, physicist and architect (1567–1617)
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Opticorum Libri Sex philosophis juxta ac mathematicis utiles,
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François de Aguilón S. J, 1567-1617: Scientist and Architect
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D'Aguilon expanded on the horopter by saying in his book:
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Neetens, A. (1997), "Franciscus Aguilonius (1567–1617)",
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in Antwerp in 1613 and illustrated by the famous painter
114:. The notable geometers educated at this school included
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535:(1979), "Rubens and Aguilonius: New Points of Contact",
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Ziggelaar, August, S. J. (2012), "The impact of the
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387:Annales de la Société scientifique de Bruxelles
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282:Similarity to other theorists
94:in 1586. In 1598 he moved to
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368:10.3109/01658109709044672
116:Jean-Charles della Faille
112:Grégoire de Saint-Vincent
672:Lombaerde, Piet (2008),
627:Kreyszig, Erwin (1991),
520:University of St Andrews
234:stereographic projection
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90:. He became a Jesuit in
52:[fʁɑ̃swadaɡilɔ̃]
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324:See also
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218:theology
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