
	Where results make sense

Topic: Witelo

Related Topics

Alhazen

Roger Bacon

Silesia

In the News (Thu 31 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Witelo - Wikipedia, the free encyclopedia
		Witelo's major surviving work on optics, called Perspectiva was dedicated to William of Moerbeke.
		He argues that there are intellectual and corporeal bodies, connected by causality (corresponding to the Idealist doctrine of the universal and the actual) emanating from God in the form of Divine Light.
		Light itself is, for Witelo, the first of all sensible entities, and his views on light are similar to those held by Roger Bacon.
	en.wikipedia.org /wiki/Witelo (299 words)

	William of Moerbeke
		He held intellectual intercourse with the philosopher Thomas Aquinas, the mathematician John Campanus, the naturalist physician Witelo, and the astronomer Henri Bate of Mechlin.
		The Polish physician Witelo, whose curious personality has been made known by M. Bacumker, wrote his "Perspectives" at the instance of Brother William of Moerbeke, the lover of truth (veritatis amatori), to whom he dedicated his treatise.
		Witelo was one of the authorized representatives of Neo-Platonism.
	www.catholicity.com /encyclopedia/w/william_oif_moerbeke.html (503 words)

	History of Medieval Philosophy 353
		In this treatise Witelo describes the laws of the propagation of light, according to Albacen; it contains many striking and original observations on the function of mental association in the sensation-process, especially in the visual perception of the third dimension of space.
		Witelo is probably the author of another unfinished work, De Intelligentiis, which Dr. Baeumker attributes to him, and which he apparently interrupted in order to write the Perspectiva.
		Witelo's psychology is Platonic and Neo-Platonic; but at the same time it incorporates Aristotelian theories on the formation of ideas.
	www.nd.edu /Departments/Maritain/etext/homp353.htm (2440 words)

	Continuity and Discovery in Optics and Astronomy
		Her alternative was to compare him with earlier authors such as Witelo on the question of reflection in convex and concave mirrors.
		The close parallels she found between Leonardo and Witelo led Brizio to challenge Ronchi and Garin's claim that Leonardo had been unaware of the mediaeval optical tradition.
		Witelo had also included almost all its propositions in the fourth book of his great optical compendium to which, incidentally, Leonardo refers at least five times.
	www.sumscorp.com /books/contin/title.html (8395 words)

	Alhazen
		He taught, previous to the Polish physicist Witelo[?], that vision does not result from the emission of rays from the eye, and wrote also on the refraction of light, especially on atmospheric refraction, showing, e.g.
		He solved the problem of finding the point in a convex mirror at which a ray coming from one given point shall be reflected to another given point.
		His treatise on optics was translated into Latin by Witelo (1270), and afterwards published by F. Risner in 1572, with the title Oticae thesaurus Alhazeni libri VII., cum ejusdem libro de crepusculis et nubium ascensionibus.
	www.ebroadcast.com.au /lookup/encyclopedia/al/Alhazen.html (300 words)

	Part One Chapter One
		For example, Witelo gives a long paraphrase of Alhazen's discussion concerning the certification of distance in the case of continuous, ordered bodies which, as he explains, are those placed in a practically straight line and effectively at equal distances from one another as are trees or mountains or high towers and the like80 (IV:10):
		Hence Witelo, like Alhazen, rejects the simple equation between size of the visual angle and apparent size, insisting that this be checked through a comparison with distance.
		Witelo, in the thirteenth century effectively compiles an encyclopaedia of optical knowledge at the time.
	www.mmi.unimaas.nl /people/veltman/books/contin/p1c1.htm (6512 words)

	Witelo - TheBestLinks.com - Aristotle, Alhazen, Arabic, God, ... (Site not responding. Last check: 2007-11-06)
		Witelo - TheBestLinks.com - Aristotle, Alhazen, Arabic, God,...
		Witelo, Aristotle, Alhazen, Arabic, God, Idealism, Johannes Kepler, Metaphysics...
		He studied at the university in Padua around 1260 and then went to Viterbo.
	www.thebestlinks.com /Witelo.html (239 words)

	Part One Chapter Four
		Hence as many as are the points on the surface of the mirror, as many are the pyramids of the form of the object terminating at the entire surface.10
		Witelo's optical compendium (c.1270-1280) marked a significant advance in this respect.
		In book two27, for instance, Witelo described the properties of rays passing through a pinhole aperture in a camera obscura.
	www.mmi.unimaas.nl /people/Veltman/books/contin/p1c4.htm (6332 words)

	Turf Update: 28 July 2003 (Site not responding. Last check: 2007-11-06)
		On behalf of WCO, he has already sent a team of 2 experts to Poland to help in the establishment of refractive error science group.
		At the congress, Prof Bogdan Miskowiak of the Karol Marchinkowski University of Medical Science in Poland presented Prof Sheni with the WITELO (1237 - 1290) award.
		WITELO is regarded as the father of optometry and lived in the 13th century.
	unorth.ac.za /Admin/Turf-Update/2003/TurfUpdate28July2003/story_02.html (388 words)

	Classical light
		He believed that the velocity of light is finite, studied convex lenses and advocated their use to correct defective eyesight.
		About the same time at Roger Bacon was working on optics in England, Witelo was studying mirrors and refraction of light and wrote up his findings in Perspectiva which was a standard text on optics for several centuries.
		Following this there was improved understanding of using a lens, and by 1590 Zacharius Jensen even used compound lenses in a microscope.
	www-groups.dcs.st-and.ac.uk /~history/HistTopics/Light_1.html (4489 words)

	timelinescience - 1201 to 1300
		They also use kites as a way of sending signals behind the enemy lines.
		In 1270 Witelo publishes his Perspectiva, a book on optics which deals with refraction, reflection and geometrical optics.
		Perhaps most importantly, Witelo rejects the current idea that rays of light are emitted from the eye.
	www.timelinescience.org /years/1300.htm (288 words)

	CATHOLIC ENCYCLOPEDIA: History of Physics
		About 1270 Witelo (or Witek; the Thuringopolonus), composed an exhaustive ten-volume treatise on optics, which remained a classic until the time of Kepler, who wrote a commentary on it.
		Albertus Magnus, Roger Bacon, John Peckham, and Witelo were deeply interested in the theory of the rainbow, and, like the ancient meteorologists, they all took the rainbow to be the image of the sun reflected in a sort of a concave mirror formed by a cloud resolved into rain.
		Like the work of Thierry of Freiberg on the rainbow, the "Epistola de magnete" by Maricourt was a model of the art of logical sequence between experiment and deduction.
	www.newadvent.org /cathen/12047a.htm (14270 words)

	Vol. 1 Ch. 5
		It meant that optical theorists were developing criteria for testing the veracity of visual images at about the same time that artists began painting images which could be tested in terms of optical veracity.
		Hence Witelo's concerns went hand in hand with a new interest in naturalism introduced by the Franciscans, and which Duccio and Giotto developed a generation later, creating what we would term visual metaphor (see below p.
		Indeed, Witelo's use of a mirror to record what was happening outside an enclosed space, presaged in an uncanny way essential elements of Brunelleschi's demonstration of perspective nearly a century and a half later.
	www.sumscorp.com /perspective/Vol1/ch5.htm (6317 words)

	lupoleboucher: Vatican-2
		The Greeks had philosophy, and some forms of natural philosophy before Socrates came awfully close to being real science, but the genuine article is a product of the catholic church and religious thought.
		Witelo: monk, innovative 13th century Polish optical physicist, and inventor of the idea of the subconscious mind, among many other ideas about consciousness often rediscovered by modern 'thinkers'"
		The idea of V-2, probably brought on by the baleful influence of various of the "social sciences," was to encourage more participation among adherents.
	lupoleboucher.livejournal.com /27588.html (3727 words)

	Raymond L. Lee, Jr.: Chapter 8--THE RAINBOW BRIDGE
		While Theodoric correctly noted that the cloudbow (or fogbow) and the primary rainbow arose in the same way, he offered no convincing explanation of why their colors differed.
		[7] Witelo simply accounted for the “completely white rainbow” with a combination of thin vapor and clear illumination.
		Witelo, 1972: Item Vitellonis Thuringopoloni Libri X (Perspectiva), bound with Opticae Thesaurus Alhazeni Arabis Libri Septem, Nuncprimum Editi (Johnson Reprint Corp., New York, 474 pp.; reprint of Friedrich Risner edition (Basel, 1572)).
	www.usna.edu /Users/oceano/raylee/RainbowBridge/Chapter_8.html (10560 words)

	Witelo, or Vitello History Summary (Site not responding. Last check: 2007-11-06)
		Home › Sciences › Science History › Witelo, or Vitello
		A natural philosopher and optical scientist, Witelo probably studied arts at the University of Paris, and later canon law at Padua.
		During an Easter holiday (probably sometime between 1262 and 1265), he wrote Tractatus de primaria causa penitentie et de natura demonum, an astronomical work that plots the movement of the sun, the lunar cycle, and the variation of day and night.
	www.bookrags.com /history/sciencehistory/witelo-or-vitello-scit-021234 (131 words)

	VITULON (Site not responding. Last check: 2007-11-06)
		Witelo also wrote a philosophical treatise, De natura daemonorum or On the Nature of Demons, and a religious treatise, De primaria causae poenitentiae or On the Primary Cause of Penitence.
		Vitulon, the ME variant of the Latin genitive case Vitellonis, appears in final rhyming position, SqT 232.
		D.C. Lundberg, "Lines of Influence in Thirteenth-Century Optics: Bacon, Witelo, Pecham." Speculum 46 (1971): 66-83; W. Thiesen, "Witelo's Recension of Euclid's De visu.
	www.columbia.edu /dlc/garland/deweever/UV/vitulon.htm (185 words)

	A Chronology of Optics
		Completed his Perspectiva which was destined to remain a standard text on optics for several centuries.
		Amongst other things, Witelo described a method of machining parabolic mirrors from iron and carried out careful observations on refraction.
		He recognised that the angle of refraction is not proportional to the angle of incidence but was unaware of total internal reflection.
	www.3rd1000.com /chronooptics.htm (3104 words)

	[No title]
		Descartes' physical analogy with the ball not only breaks down, but is very tricky in the first place since light, in his philosophy, being pressure, does not move at all.
		Further, similar to Alhazen and Witelo, Descartes' mathematical treatment separated the trajectory of refracted light into vertical and horizontal components.
		In fact, Descartes used tables of refraction from Witelo, and Witelo had copied these nearly exactly from Ptolemy.
	www.georgiasouthern.edu /~etmcmull/FERMAT.htm (4096 words)

	MuslimHeritage.com - Topics (Site not responding. Last check: 2007-11-06)
		He will begin observations here, which will be completed in 1272 and called Zij-i Ilkhani.
		"Perspectiva" ["Perspectives"] is published by Witelo (a German-Polish scholar).
		This treatise on optics, wholly based on Ibn al-Haytham's earlier work rejects the Greek notion that rays travel from the eye to the thing seen.
	www.muslimheritage.com /timeline/chronology.cfm (2876 words)

	ALOCEN (Site not responding. Last check: 2007-11-06)
		He was the earliest user of camera obscura, "the dark chamber," the principle on which cameras function.
		The Polish physicist Witelo translated the work on optics, and a combined edition, Alhazeni et Vitellonis Opticae (The Optics of Alhazen and Witelo), was printed in Basel in 1572.
		The magic mirror, in which the future is reflected, reminds the people at Cambyuskan's court of Alocen, Vitulon, and Aristotle, who have written about mirrors, SqT 232.
	www.columbia.edu /dlc/garland/deweever/A/alocen.htm (173 words)

	Find in a Library: Witelonis perspectivae liber quartus Book IV of Witelo's Perspectiva : a critical edition and ...
		Find in a Library: Witelonis perspectivae liber quartus Book IV of Witelo's Perspectiva : a critical edition and English translation with introduction, notes and commentary
		Witelonis perspectivae liber quartus Book IV of Witelo's Perspectiva : a critical edition and English translation with introduction, notes and commentary
		WorldCat is provided by OCLC Online Computer Library Center, Inc. on behalf of its member libraries.
	worldcatlibraries.org /wcpa/ow/07db77992949a258a19afeb4da09e526.html (111 words)

	Historical background.
		And if that were not enough, the argument for finite speed is easily dismissed:
		This view was echoed by many thinkers in western history: Augustine (ca 354-430), John Pecham (ca 1230-1292), Albert the Great (ca 1200-1280), Thomas Aquinas (ca 1225-1274), and Witelo (ca 1230-ca 1275) to name a few.
		Among these giants, Galileo Galilei (1564-1642) stands alone in his disagreement; he wrote
	www.stats.uwaterloo.ca /~rwoldfor/papers/sci-method/paperrev/node2.html (862 words)

	[No title]
		The books of Alhazen, Bacon, Grosseteste, Witelo and Pecham are as scientifically sophisticated as anything the medievals produced.
		Optics includes possibly the high point of medieval science, Theodoric of Freiberg's explanation of the rainbow (which depends essentially on a diagram).
		The result of these speculations in the fevered imaginations of the witch inquisitors makes an alarming and depressing story, an illuminating case study on the effects to which mistakes in abstract thinking can lead.
	web.maths.unsw.edu.au /~jim/image.html (16210 words)

	Optics - Early works to 1800 books, find the lowest prices
		by Witelo, Lech Bieganowski, Andrzej Bielski, Witold Wroblewski
		Witelonis Perspectivae Liber Secundus Et Liber Tertius : Books II and III of Witelo's Perspectiva a Critical Latin Edition and English Translation with Introduction, Notes, and Commentaries
		Witelonis Perspectivae Liber Quintus : Book V of Witelo's Perspectiva an English Translation, with Introduction and Commentary and Latin Editon of the First Catoptrical Book of Witelo's Perspectiva
	www.allbookstores.com /Optics-Early_Works_To_1800.html (255 words)

Try your search on: Qwika (all wikis)