61. Fermer Translate this page Celui que l'on appelait alhazen, était considéré comme un grand physicien, connupour avoir élucidé les problèmes liés à la lumière et à la vision. http://photo-forum.ifrance.com/photo-forum/Alhazen.html

Ibn Al Haytham Opticae thesaurus Alhazeni Arabis Liber Septem , il fut la base de toute recherche dans le domaine de l'optique. Alhazen's problem NASA Galerie Astronomie ... photo-forum@ifrance.com

62. Math 306 For k=5,. For k=6,. Ibn AlHaitham. Otherwise known as alhazen, he was born in c.965 in Basra and died in Cairo around 1039. alhazen’s Formula. Proof of alhazen. http://www.mste.uiuc.edu/courses/ci302sp02/students/pschroer/ForPortfolio/math30

Pamela Schroer Math 306 Graham Evans Dec. 14, 2001 Summing There have been various methods in the history of mathematics to find the formula for the summation of n terms of for k=1, 2, 3, 4, Three of the main people who studied this were Alhazen, Fermat, and Pascal. In this paper, I have explored their methods of finding the sums, and have proven a general formula using their equations. I then concluded with some contributions of the Bernoulli brothers. While this would last more than an hour lesson in a classroom, it is a complete list of the formulas and induction proofs for these great mathematicians. General Formula to Strive to Prove This is the formula I will eventually form and prove through the works and proofs of Alhazen, Fermat, Pascal and the Bernoulli brothers. lower degree terms of different parity than k Formulas for k=1, 2, 3, 4, 5, 6 This is just a general list of the first few k’s, the list could continue for pages. The list follows the general formula which we strive to prove. For k=1

63. Roemer: Chapter I of light is due to the emission of some sort of particles by the luminous source(as he believed) then the speed of light must be finite (3). alhazen ABU 'ALI http://dibinst.mit.edu/BURNDY/OnlinePubs/Roemer/chapter1.html

CHAPTER 1 In September of 1676 O LE R OEMER announced to the members of the Paris Academie des Sciences that the eclipse of the innermost satellite of Jupiter, expected on the ninth of the following November, would occur exactly ten minutes later than the time computed on the basis of previous eclipses. He kept repeating this prediction, explaining that the delay would arise from the simple fact that astronomers considered light to be propagated instantaneously rather than "gradually". When observation had confirmed his prediction, R OEMER told the members of the Academie that the speed of light was of such magnitude that it would require about 22 minutes to traverse the diameter of the annual orbit of the earth. In order to appreciate fully the significance of R OEMER'S work and to understand the quality of its reception, it is necessary to trace briefly the history of ideas concerning the finiteness of the velocity of light. It must, of course, he borne in mind that the lack of exact knowledge among early scientists concerning the nature and properties of light precluded any really significant statement by them about its velocity. Among the Greeks, for example, there seems to have been a general belief that this velocity was infinite. (This was not one of the more important problems: there was much more interest in catoptrics and problems such as whether vision proceded from the eye or the visible object) An exception to this general belief is E

64. Type_Document_Title_here alhazen arabo tradotta http://www.quipo.it/villaggioglobale/bassora.htm

Il primo studio sulle applicazioni della luce La luminosa luce di Bassora di GIORGIO NEBBIA Professore emerito di Merceologia - Università di Bari Il 5 novembre 1966 l'Arno straripò e invase molti quartieri di Firenze e allagò molti edifici, fra cui la Biblioteca Nazionale che è proprio in riva al fiume. Tutto il mondo assistette sbalordito, attraverso la televisione, all'estrazione, da parte dei volontari, di centinaia di migliaia di libri preziosissimi, alcuni rarissimi o unici, dalla massa di fango, nafta e fogna che li aveva impregnati e ricoperti. Nelle pagine del libro che tornava alla luce dal buio del fango, erano contenute le conoscenze che stanno alla base di tutte le applicazioni moderne della luce; scusate il gioco di parole. Non avreste i vetri delle finestre o delle automobili, così come sono, non illuminereste le stanze di casa con i più raffinati accorgimenti della bioarchitettura, non riuscireste a pettinarvi (voi gentili lettrici) o a farvi la barba (voi lettori) davanti allo specchio, le automobili e le gallerie non avrebbero i catarifrangenti se, mille anni fa, questo Alhazen non avesse dedicato la vita a studiare proprio il comportamento della luce quando attraversa l'atmosfera, l'acqua, i vetri, quando viene riflessa dagli specchi. Alhazen era nato a Bassora nel 965, aveva proseguito gli studi a Baghdad (sì, proprio quella Bassora e quella Baghdad che abbiamo sentito citare tante volte, quando venivano bombardate durante la guerra Iran-Iraq del 1981-'89 e durante la guerra del Golfo del 1991), poi era vissuto al Cairo, poi in Spagna, poi ancora al Cairo, dove morì nel 1039.

65. Alhazen alhazen. http://planeta.terra.com.br/arte/casadasabedoria/filislam/autores/alhazen.htm

Alhazen Filosofia Islâmica Filosofia Judaica Filosofia Cristã Atualizações ... Busca COMENTADORES (artigo) Lindberg, David C. Alhazen’s Theory of Vision and its Reception in the West, Isis: an International Review Devoted to the History of Science and its Cultural Influences , Official Quartely Journal of the History of Science Society, vol. 58, part 3, no. 193, 1967: 321-341. [Verza]

66. Salaciensis, De Crepusculis Liber Unus, Nunc Recens & Natus Et Editus.- ALHAZEN Title Salaciensis, de crepusculis liber unus, nunc recens natus et editus. alhazen(or AL-HAYTHAM, Ibn). alhazen was the greatest physician of the Islam. http://www.worldbookdealers.com/books/forum/0000226300/bk0000226314.asp

Visit WorldPrintDealers Welcome to WorldBookDealers Sign in Register You have 0 items in your Shopping Basket Your Wishes Your Account Dealer For more information on Antiquariaat Forum , click here Summary Author: NUNES, Pedro. Title: Publication: Lisbon, Ludovicus Rodericus, 1542, January. Price: Book Sold Reference No: Book Description (73, 1 blank) leaves. 4to. Modern marbled boards. Good copy, complete with correction slip on leaf O1.- (Hole in leaf S5, due to natural paper fault, causing damage to printer's device). Need a paper copy? Use the Printable Version Send this to someone else email a friend Comments or Suggestions? Write to us at feedback@WorldBookDealers.com Produced by the OTHER media

67. Aperture Image In the eleventh century, Ibn alHaytham (known in medieval Europe as alhazen)used punctiform analysis to revolutionize the theory of vision. http://www.scivis.com/euclid/aperture.html

Lesson Plan by Bruce Stewart for Ralph Abraham’s Perspectiva Keywords: luminous object, penumbra, pinhole, camera obscura, punctiform analysis Leonardo’s Camera obscura and the Aperture Image Problem Materials : poster board, string, tape Leonardo da Vinci made careful and critical studies of the new Renaissance science of linear perspective, which had been recently invented by the Florentine goldsmith and architect Filippo Brunelleschi. One common link among Leonardo, Brunelleschi, Lorenzo Ghiberti, and Albrecht Durer was the mathematician Luca Pacioli, who advised all four artists on geometry and mathematics. Leonardo made frequent use of a camera obscura in his researches. This is a dark room with an aperture, a small opening in one wall which faces a brightly illuminated scene in a neighboring room. An image of the outside scene appears on the wall of the camera obscura opposite the aperture. The optical principle which explains the camera obscura is the principle of punctiform analysis: every individual part of a luminous or illuminated body emits light rays in every direction. A closely related optical phenomenon is the penumbra of sun shadows. Because the sun appears as an extended bright disk (with an apparent diameter of about one-half degree), and not a point of light, the shadow cast by a very smooth stone or sharp-edged object has a blurry edge, the penumbra. Leonardo was apparently the first person to describe the gradual change from light to deep shadow.

68. Arabic Studies In Physics And Astronomy During 800 - 1400 AD scientist. Abu Ali alHasan ibn al-Haytham (965-1040), later knownto Europeans as alhazen, wrote about 92 works in his lifetime. http://www.phys.jyu.fi/homepages/agar/arabs.html

Essay Two: Arabic Studies in Physics and Astronomy During 800 - 1400 AD After the fading of the ancient Greeks, the next steps in science were taken in a different society. Muslim armies, which had been unified by Mohammed's doctrine, began their conquest in 636. The Muslims seized Syria, Iraq, Mesopotamia and Egypt. Their influence extended through Turkey, North Africa, Spain and as far east as the borders of China. The Arabs absorbed ideas from mathematics, astronomy and other sciences from the cultures and regions they conquered. By the year 750 the wars had subsided and a time of relative peace existed. Scholars from different regions gathered in Baghdad and caliph Al Mamun established a House of Wisdom in the city. At this time many Greeks texts were translated into Arabic for the first time. Most of the Arabs' work was in the field of mathematics and astronomy but there was also significant advances made in physics. This paper will limit itself in discussing advances in the two latter fields. Al-Sabi Thabit ibn Qurra al-Harrani (826-901) revised many of the translated Greek works and was one of the first reformers of Ptolemy's system. He wrote Kitab

69. Vinci Les Précurseurs Translate this page alhazen Ibn al Haytham 965-1039, Abou Ali Al Hassan Ibn Al Haytham deson nom latinisé, alhazen C'est Wiedman au début du XXe siècle http://noe-education.org/vinci/D12101N01.php3

les origines grecques les origines romaines les origines arabes le moyen-age ... les textes en lignes les origines grecques Archytas de Tarente IV-IIIe av. J.C. Archytas CHRONOMATHS biographie (en anglais) Univ.St-Andrew Courbes d'Archytas R. FERRÉOL, J. MANDONNET Archytas de Tarente le pigeon volant d'Archytas invention de la vis,de la poulie, du cerd-volant F LUCKEL Alexandrie Franck Duffaud (site disparu) Trois tacticiens grecs O. BATTISTINI Alexandrie, la naissance de la mécanique, IIIe av. J.C. Histoire de l'orgue hydraulique Nelly JOHNSON Philon de Byzance les Mécaniques traite des appareils de levage et de traction et tente de faire la théorie des machines simples. Il dresse l'inventaire des problèmes de rapport et de démultiplication des engrenages et cite certaines inventions nouvelles, comme les presses (presse à vis, presses à vis et levier, presses à levier et treuil...). Metrica Heron d'Alexandrie Heron Chronomaths The Pneumatics of Hero of Alexandria traduction des Pneumatiques Bennet Woodcroft les romains Vitruve Ier avant J.C.

70. Sight Seminar, 1996-97 Activities (selections) Oct. 19 Everett Rowson (AMES) Ibn alHaytham (alhazen). 26 RenataHolod (History of Art) Ibn al-Haytham (alhazen) same as above, Book II Nov. http://www.phil.upenn.edu/pos/activ97.html

Power of Sight Seminar 1996-97 Activities Reading Group Sept. 28 Gary Hatfield (Philosophy) Euclid , "The Optics of Euclid." Harry Edwin Burton, trans. Journal of the Optical Society of America 35 (May 1945): 357-72. Oct. 5 Gary Hatfield Ptolemy The Geography L'Optique de Cluade Ptolemee, dans la version latine d'apres l'arabe de l'emir Dugine de Sicile . Albert Lejeune, trans. NY: E.J. Brill, 1989. (selections) Oct. 19 Everett Rowson (AMES) Ibn al-Haytham (Alhazen). The Optics of Ibn al-Haytham: Books I - III: On Direct Vision . A.I. Sabra, trans. London: Warburg Institute, U of London Press, 1989. (Book I) Oct. 26 Renata Holod (History of Art) Ibn al-Haytham (Alhazen) same as above, Book II Nov. 2 Gary Hatfield Ibn al-Haytham (Alhazen) same as above, Book III Nov. 9 Charles Kahn (Philosophy) Concepts of Light and Vision in Greek Thought selected readings from Plato Plotinus . Nov. 16 Ann Moyer (history) Roger Bacon . "Optical Science," in

71. MìK Brandýs N.L.- St. Boleslav - Katalog Clavius dotaz Téma (PH+kl.slova) rovno alhazen , pocet záznamu 1 Dok, Autor, Název,Cást, Rok, Pocet. KN, Štoll, Ivan, Objevitelé prírodních zákonu, 1997,2. http://clavius.knihovna.brandysnl.cz/lwww.dll?h~DD=&~&t=Alhazen

72. Pages Changed In The Past 7 Days The index for this list is updated every night. The Feynman Double SlitTue 15 Oct 102 alhazen 1; Lens Optics Expt Wed 6 Nov 102 alhazen 1. http://www.upscale.utoronto.ca/cgi-bin/ice2-for.pl?KEYWORDS=alhazen

73. Fermer Translate this page remarquables. connu en occident comme alhazen, l'aI-Haitham Ibn estné en 965 AD à Basorah, et a été étudie à Basrah et Bagdad. http://www.ifrance.com/Farabi/haithem.html

Abu Ali Hasan Ibn al-Haitham (965 - 1040 ap.jc) 1-PRESENTATION Il était un des physiciens les plus éminents dont les contributions à optiques et les méthodes scientifiques sont remarquables. connu en occident comme Alhazen, l'aI-Haitham Ibn est né en 965 A. D. à Basorah, et a été étudie à Basrah et Bagdad. Par la suite, il est allé à Egypte où on lui a demandé à trouver le une façon de controler l'inondation du Nil. En vain dans ce, il a simuler la folie pour échapper au chatiment du khalifea l-Hakim jusqu'à la mort de celui-çi. Il a aussi voyagé en Espagne et, pendant cette période, il avait le du temps pour ses recherches scientifiques en optiques, mathématiques, physique, médecine et le développement des méthodes scientifiques 2-CONTRIBUTIONS ET OEUVRES COMMENTAIRES

74. 1Up Info > Alhazen (Mathematics, Biographies) - Encyclopedia You are here 1Up Info Encyclopedia Mathematics, Biographies alhazen,1Up Info A Portal with a Difference. Mathematics, Biographies. alhazen. http://www.1upinfo.com/encyclopedia/X/X-Alhazen.html

You are here 1Up Info Encyclopedia Mathematics, Biographies Alhazen ... News Search 1Up Info ENCYCLOPEDIA Mathematics, Biographies Alhazen Related Category: Mathematics, Biographies Alhazen: see Ibn al-Haytham Related Resources and Utilities AMAZON All Products Books Magazines Popular Music Classical Music Video DVD Electronics Software Outdoor Living Wireless Phones Computers Outlet Read articles on eLibrary: Encyclopedia Topics History People Places Content on this web site is provided for informational purposes only. We accept no responsibility for any loss, injury or inconvenience sustained by any person resulting from information published on this site. We encourage you to verify any critical information with the relevant authorities. Home Contact Us Privacy Links Directory ©1Up Info

75. Science Experiments On File™ ( Save Experiment ). Key Terms, Topics, and Principles alhazen . Historical Experiments. Light And Sound. http://www.fofweb.com/Onfiles/SEOF/MainPage.asp?SID=17&MainDesc=Alhazen

76. Mìstská Knihovna Tábor - Katalog Clavius Similar pages www.vkta.cz/clavius/eng/lwww.dll?h~T=alhazen http://www.vkta.cz/clavius/lwww.dll?h~T=Alhazen

77. Leonardo's Lune-easy Page 2 Leonardo da Vinci rediscovered the Lunes of alhazen while working withright triangles. Lune-easy continued. THE LUNES OF alhazen. http://www.hypatiamaze.org/leonardo/leo_lune2.html

Leonardo da Vinci re-discovered the "Lunes of Alhazen" while working with right triangles. Lune-easy continued THE LUNES OF ALHAZEN Leonardo starts with an isosceles right triangle shown on the left. The areas of the 2 semi-circles on the legs of this isosceles rt. triangle, added together, equal the area of the large semi-circle in blue. This is follow from the Pythagorean Theorem. Leonardo applies his lune-easy technique to the above isoceles rt. triangle. He folds over the large blue semi-circle which creates 2 lunes in orange. He subtracts the areas in white from all 3 semi-circles. The areas left over show that the 2 orange lunes equal the area of the rt. triangle in red stripes. Hippocrates discovered this in 460 B.C. Next, Leonardo tries the same analysis to any right triangle. And the results are the same: The areas of the 2 lunes in orange equal the area of the right triangle. This was first discovered by Alhazen in around 1000 A.D. However, his work was not available in Europe until 1899. So Leonardo re-discovered the Lunes of Alhazen on his own.

78. 3. Algebra And Number Theory We know that every euclidean ring is a principal ideal domain. Investigateprincipal ideal domains that are not euclidean. 3.4 alhazen's Problem. http://www.maths.ox.ac.uk/teaching/ug-projects/html/project-ideas/node4.html

Next: 4. Analysis Up: EXTENDED ESSAYS: paper o2 Previous: 2. Geometry and Topology Subsections 3.1 Converses of Lagrange's Theorem 3.2 Simple groups of odd order 3.3 Euclidean and Principal Ideal Domains 3.4 Alhazen's Problem ... 3.8 Irrational numbers 3. Algebra and Number Theory 3.1 Converses of Lagrange's Theorem Lagrange's Theorem states that if is a finite group and is a subgroup then divides . In general, if is a divisor of there need not be a subgroup of order . Investigate those finite groups with the property that for every divisor of their order there exists at least one subgroup of order 3.2 Simple groups of odd order The Feit-Thompson Theorem published in 1963 tells us that the only finite simple groups of odd order are the cyclic groups for odd prime numbers . The proof is very long and sophisticated. Nevertheless, with quite elementary methods considerable progress can be made towards proving the theorem for small odd numbers, or for odd numbers with special arithmetic properties. 3.3 Euclidean and Principal Ideal Domains We know that every euclidean ring is a principal ideal domain. Investigate principal ideal domains that are not euclidean.

79. ABU ALI HASAN IBN AL-HAITHAM ABU ALI HASAN IBN ALHAITHAM (alhazen). Known in the West as alhazen, Ibn al-Haithamwas born in 965 AD in Basrah, and was educated in Basrah and Baghdad. http://ismaili.net/~heritage/mirrors/63_haitham/haithamt.htm

ABU ALI HASAN IBN AL-HAITHAM (Alhazen) (965-1040 A.D.) A bu Ali Hasan Ibn al-Haitham was one of the most eminent physicists, whose contributions to optics and the scientific methods are outstanding. Known in the West as Alhazen , Ibn al-Haitham was born in 965 A.D. in Basrah, and was educated in Basrah and Baghdad. Thereafter, he went to Egypt, where he was asked to find ways of controlling the flood of the Nile. Being unsuccessful in this,he feigned madness until the death of Caliph al-Hakim. He also travelled to Spain and, during this period, he had ample time for his scientific pursuits, which included optics, mathematics, physics, medicine and development of scientific methods on each of which he has left several outstanding books. H e made a thorough examination of the passage of light through various media and discovered the laws of refraction. He also carried out the first experiments on the dispersion of light into its constituent colours. His book Kitab-al-Manadhir was translated into Latin in the Middle Ages, as also his book dealing with the colours of sunset. He dealt at length with the theory of various physical phenomena like shadows, eclipses, the rainbow, and speculated on the physical nature of light. He is the first to describe accurately the various parts of the eye and give a scientific explanation of the process of vision. He also attempted to explain binocular vision, and gave a correct explanation of the apparent increase in size of the sun and the moon when near the horizon. He is known for the earliest use of the camera obscura. He contradicted Ptolemy's and Euclid's theory of vision that objects are seen by rays of light emanating from the eyes; according to him the rays originate in the object of vision and not in the eye. Through these extensive researches on optics, he has been considered as the father of modern Optics.

80. Panorama De La Vida Intelectual En El Islam Clásico (2) Translate this page Ibn al-Haytham, el alhazen latino (c. 354/965-430/1039), que era contemporáneode Bîrûnî, criticó igualmente la filosofía peripatética en muchos http://www.webislam.com/numeros/2001/09_01/Articulos 09_01/Panorama_intelectual(

Número 142 // 10 de octubre de 2001 // 22 Rajab 1422 A.H. PENSAMIENTO Panorama de la vida intelectual en el Islam clásico (2) Por Seyyed Hosein Nasr * Recomienda esta página En cuanto al hermetismo, estaba asociado naturalmente con la alquimia. El primer alquimista musulmán famoso, Jâbir ibn Hayyân, escribió muchos tratados sobre filosofía hermética y se oponía a la filosofía natural aristotélica. Es interesante el hecho de que también su obra fuese adoptada por los ismâ’îlíes, quienes, de hecho, añadieron trabajos de su propia autoría pero atribuidos a Jâbir. Otros famosos textos alquímicos, como la Tabla de esmeralda y la Turba Philosophorum , pertenecen también a la misma tradición hermética y alquímica islámica basada en anteriores fuentes alejandrinas, bizantinas y siríacas. Y el Picatrix , tan conocido en occidente, es una traducción del Propósito de los sabios Liber introductorius ma ior. El anterior interés de los latinos por la ciencia islámica había hecho que Adelardo de Bath tradujera al latín una obra más breve de Abû Ma’shar, la cual preparó el terreno para la amplia acogida de la obra astrológica mayor, a través de la cual la física aristotélica llegó a occidente veinte años antes de que ninguna de sus obras específicas sobre filosofía natural fuera conocida en latín.

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Page 4     61-80 of 91    Back | 1  | 2  | 3  | 4  | 5  | Next 20