81. 01.04.2005: Vor 1040 Jahren: Al-Haitham , Genannt Alhazen, In Basra Geboren - Wd Translate this page Am 01.04.965 wird Al-Haitham , genannt alhazen, in Basra geboren. http://www.wdr.de/themen/kultur/stichtag/2005/04/01.jhtml

Dienstag, 30.08.2005 Nachrichten Politik Wirtschaft Forschung ... WDR Regional Aktuell bei wdr.de "Katrina": Ganz große Katastrophe ausgeblieben WLAN fürs Wohnzimmer Verfassungsschutz präsentiert Manga- "Andi" ... WDR Shop Wahnsinnig für die Wissenschaft Vor 1040 Jahren: Der arabische Gelehrte Al-Haitham geboren Arabische Gelehrte im Gespräch Abu Ali al-Hasan al-Haitham wird im Jahre 965 in Basra geboren, in der Blütezeit des arabischen Reiches von Bagdad, dem Reich der Geschichten aus 1001er Nacht. Fast wie eines dieser Märchen klingt auch seine eigene Lebensgeschichte. Am Hof der Hauptstadt steigt al-Haitham zum Wesir des Kalifen auf, zum zweiten Mann des Staates. Aber er möchte kein Beamter, sondern ein Gelehrter sein. Weil es keinen anderen Ausweg aus der Staatsraison gibt, täuscht er Wahnsinn vor. Unter dem Deckmantel der Verrücktheit wird er einer der größten Wissenschaftler seiner Zeit und ist, so wie seine Zeitgenossen Avicenna und al-Biruni,  allen Intellektuellen Europas überlegen. Das erkennt auch der Kalif - Wahnsinn hin oder her - und schickt ihn nach Ägypten. Dort soll er den Nil so eindämmen, dass sich die jährlichen Überschwemmungen steuern lassen. Aber der "Wahnsinnige" muss vor Ort erkennen, dass das Projekt größenwahnsinnig ist und gibt es gegen den Willen des Kalifen auf. Stand: 01.04.05

82. The True Physics Project - Physics In A New Way. alhazen, also known as alBasri, meaning that he came from the city of Basri in One of alhazen major works was Optics, dealing with lenses, mirrors, http://www.truephysics.com/history/physicists/alhazen.html

THE PROJECT QUESTIONS HISTORY EDUCATION ... History of Electromagnetism [Physicists] Alhazen - Abu Ali al-Hasan ibn al-Haytham Arab physicist and pioneer of optics. Born 965 AD [ Basra, Iraq ] Died 1040 AD [ Cairo, Eygpt ] Background Alhazen, also known as al-Basri, meaning that he came from the city of Basri in present day Iraq but he is also know as al-Misri indicating that he originated from Egypt. Little is know of his personal life but he did write an autobiography in 1027 which survives to this day, but deals mainly with his science. Early in his life he studied the conflicting religious views of the time and came to the realization that none of them represented the truth Optics One of Alhazen major works was Optics, dealing with lenses, mirrors, the eye, colour and even camera obscura (pinhole camera). Up to this time, the ancient Greeks like Euclid and Ptolemy believed that light was emitted by the eye but Alhazen stated that light reflected off objects and the light rays entered the eye. Nile Flood At the time, the Nile had devastating annual flood and Alhazen had the idea to regulate the flow of water down the Nile. Egypt at that time was ruled by al-Hakim the Fatimid caliph, he requested Alhazen to come to Egypt and carry out the changes to the Nile. Alhazen made a survey of the Nile and realized that it was not possible to regulate the floods. Fearing for his life from the hand of al-Hakim he decided to pretend to be mad and was confined to his house until the death of al-Hakim in 1021.

83. Art Bulletin, The: On Alberti's "sign": Vision And Composition In Quattrocento P alhazen s second stage involves the use of the mind s estimative powers and The special sensibles of alhazen are equivalent to the separated http://www.findarticles.com/p/articles/mi_m0422/is_n4_v79/ai_20824278/pg_12

@import url(/css/us/style1.css); @import url(/css/us/searchResult1.css); @import url(/css/us/articles.css); @import url(/css/us/artHome1.css); Advanced Search Home Help IN free articles only all articles this publication Automotive Sports 10,000,000 articles - not found on any other search engine. FindArticles Art Bulletin, The Dec 1997 Content provided in partnership with 10,000,000 articles Not found on any other search engine. Related Searches Painting, Renaissance / Criticism and interpretation Composition (Art) / Criticism and interpretation Featured Titles for ALAN Review Afterimage American Drama American Music Teacher ... View all titles in this topic Hot New Articles by Topic Automotive Sports Top Articles Ever by Topic Automotive Sports On Alberti's "sign": vision and composition in quattrocento painting - Leon Battista Alberti's commentary 'On Painting' Art Bulletin, The Dec, 1997 by Jack M. Greenstein Save a personal copy of this article and quickly find it again with Furl.net. It's free! Save it. Continued from page 11. Signs enter optical theory in relation to visual recognition. Alhazen's treatment of signs is scattered throughout books 1 and 2 of the Optics.(109) No definition is given, but signs are always associated with recognition by memory or "prior cognition" (cognitio antecedens or praecedens).(110) Prior cognition takes two forms. The first involves recognition of objects; the second, recognition of visual properties.

84. ALOCEN Abu Ali alHasan ibn-al-Haitham, known in Latin as alhazen (cAD 965, fl. Alocen is the ME variant of Latin alhazen, derived from the Arabic patronymic, http://www.columbia.edu/dlc/garland/deweever/A/alocen.htm

Main Menu List of entries finished ALOCEN. Abu 'Ali al-Hasan ibn-al-Haitham, known in Latin as Alhazen (c. A.D. 965, fl. 996-1002), was born in Basra and died in Cairo, c. 1039. His work on optics, Kitab al-Manazir , or The Book of the Telescope , was translated into Latin and greatly influenced medieval science, especially the work of Roger Bacon. His greatest contributions were on the subjects of spherical and parabolic mirrors, refraction, and the study of the atmosphere. 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 Aristotile Vitulon Alocen is the ME variant of Latin Alhazen , derived from the Arabic patronymic, ibn-al-Haitham.

85. Alhazen Search Word alhazen Abu Ali alHasan Ibn Al-Haitham, (965-1040) was a Arab Muslimmathematician; he is sometimes called al-Basri, after his birthplace. http://www.searchword.org/al/alhazen.html

86. Read About Alhazen At WorldVillage Encyclopedia. Research Alhazen And Learn Abou Recherche alhazen Translate this page Requête alhazen, Certification IDDN. Dans les fiches, Parmi les mots-clés.3 fiches trouvées . 2001 les Cahiers de Sciences et Vie. Num. 63. Dossier. http://encyclopedia.worldvillage.com/s/b/Alhazen

Culture Geography History Life ... WorldVillage Alhazen From Wikipedia, the free encyclopedia. Alhazen Abu Ali al-Hasan Ibn Al-Haitham (also: Ibn al Haythen ), was an Arab mathematician ; he is sometimes called al-Basri , after his birthplace. He was born at Basra , then part of Buwayhid Persia , now part of Iraq (See http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Al-Haytham.html http://www.answers.com/topic/alhazen ), and probably died in Cairo Egypt . There is another Alhazen who translated Ptolemy 's Almagest in the 10th century. One version of his career has him summoned to Egypt by the mercurial caliph Hakim to regulate the flooding of the Nile . After his field work made him aware of the impracticability of his scheme, and fearing the caliph's anger, he feigned madness . He was kept under house arrest until Hakim's death in . During this time he wrote scores of important mathematical treatises. Alhazen was a pioneer in optics engineering and astronomy . According to Giambattista della Porta , he first explained the apparent increase in the size of the moon and sun near the horizon, although Roger Bacon gives the credit of this discovery to Ptolemy . He taught that vision does not result from the emission of rays from the eye, and wrote on the

87. Arabic Studies In Physics And Astronomy During 800 - 1400 AD alhazen can certainly be labelled as a pioneer due to his studies of light and His study of optics contained a theory of light in which alhazen was the 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

88. 151Strumento Di Leonardo Per La Soluzione Del Problema Di Alhazen Translate this page http://www.museo.unimo.it/theatrum/macchine/151ogg.htm

89. ALHAZEN FACTS AND INFORMATION alhazen Abu Ali alHasan Ibn Al-Haitham (also Ibn al Haythen), (965-1040), Works by alhazen on geometrical subjects were found in the http://www.witwib.com/Alhazen

ALHAZEN Alhazen facts and information Alhazen Abu Ali al-Hasan Ibn Al-Haitham (also: Ibn al Haythen ), was an Arab mathematician ; he is sometimes called al-Basri , after his birthplace. He was born at Basra , then part of Buwayhid Persia , now part of Iraq (See http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Al-Haytham.html http://www.answers.com/topic/alhazen ), and probably died in Cairo Egypt . There is another Alhazen who translated Ptolemy 's '' Almagest '' in the 10th century. One version of his career has him summoned to Egypt by the mercurial caliph Hakim to regulate the flooding of the Nile . After his field work made him aware of the impracticability of his scheme, and fearing the caliph's anger, he . He was kept under house arrest until Hakim's death in . During this time he wrote scores of important mathematical treatises. Alhazen was a pioneer in optics engineering and astronomy . According to , he first explained the apparent increase in the size of the moon and sun near the horizon, although gives the credit of this discovery to Ptolemy . He taught that vision does not result from the emission of rays from the eye, and wrote on the

90. Alhazen alhazen. Ibn alHaitham. arabski matematyk, fizyk i astronom dzialajacy w Egipcie (ok.965-1039). Pionier optyki, wg. tradycji wynalazca soczewki. http://www.wynalazki.mt.com.pl/twor/alhazen.html

Alhazen Ibn al-Haitham. arabski matematyk, fizyk i astronom dzia³aj±cy w Egipcie (ok. 965-1039). Pionier optyki, wg. tradycji wynalazca soczewki By³ pierwszym, który opisywa³ " ciemniê optyczn± " - pierwowzór aparatu fotograficznego i proponowa³ jej u¿ycie do obserwacji zaæmieñ s³oñca. Interesowa³ siê zjawiskami optycznymi - za³amanie ¶wiat³a.

91. [ Burburinho - Eu Queria Ser Alhazen ] Translate this page Burburinho é um híbrido de ezine, weblog e newsletter, com informação e opiniãosobre assuntos culturais variados. Pensamentos despenteados para dias de http://www.burburinho.com/20010712.html

arquivos boletim por email, grátis livro bastidores eu queria ser alhazen miscelânea por Nemo Nox lgumas vezes tenho vontade de ser o Alhazen, me fingir de louco e ficar fazendo as minhas coisinhas sem ninguém me incomodando. Abu Ali Hasan Ibn al-Haitham, mais conhecido como Alhazen, foi um cientista árabe da virada do milênio passado (965-1039) que passou a maior parte da sua vida no Egito, naquela época governado pelo todo-poderoso e também muito temperamental califa Al-Hakim. Pois o soberano o contratou para um projeto grandioso, desviar o curso do rio Nilo para controlar as cheias. Percebendo que se tratava de uma tarefa impossível, e temeroso da fúria do califa, Alhazen passou a se fingir de louco, e assim viveu por cerca de vinte anos sem ter que dar satisfações de seus atos. Sem pressões exteriores e com o sustento garantido, o cientista árabe foi então capaz de avançar em seus estudos de física e matemática, e acabou por se tornar uma figura importantíssima na história da ciência. Foi ele, por exemplo, que provou que Aristóteles estava errado ao afirmar que um arco-íris se formava pelo reflexo do sol nas gotas de chuva. Depois de experiências com garrafas cheias d'água (imagino os empregados se perguntando "o que esse louco estará fazendo com as garrafas?"), Alhazen descobriu que o arco-íris é na verdade fruto da refração da luz, cada cor com seu ângulo diferente. Hoje isso pode parecer brincadeira de criança (ou passatempo de loucos) mas foi uma descoberta importante, que precedeu em muito tempo trabalhos semelhantes de cientistas europeus.

92. Editorial The contents fall into two groups the writings of Ptolemy and alhazen in Egypt many If alhazen is obscure in our field, the same cannot be said of Hans http://www.perceptionweb.com/perc1096/editorial.html

Perception 1996, volume 25 Guest editorial The deeper lesson of Alhazen This special historical issue of Perception concerns the neglect of vision work in other times and other places. The contents fall into two groups: the writings of Ptolemy and Alhazen in Egypt many centuries ago, and the more recent writings of nineteenth and early twentieth century German scholars. I will take Alhazen and Wallach to represent these two time frames. As regards the former, we are indebted to Ian Howard for his provocative reminder of the groundbreaking work of Alhazen. In Alhazen we find an astonishing range of insights that we have been in the habit of crediting to far more recent Westerners. Some six hundred years before Galileo he was conducting experiments, even psychophysical experiments. His work provided the basis for Kepler's correct explanation of the formation of retinal images as the first stage of vision, surely a cornerstone of the entire modern discipline of visual perception. It was the apparent discrepancy between the properties of retinal images and the properties of the visual world that demanded explanation, animating the field of visual perception then and now. How could so important a figure have been so badly neglected? If Alhazen is obscure in our field, the same cannot be said of Hans Wallach, who is known for many elegant experiments. In his study of the kinetic depth effect Wallach established a new depth cue-motion-in such a characteristically convincing way that his claim has never even been challenged. First, he showed that the display appeared to have depth only when in motion, while any stationary view appeared flat. Second, because the stimulus was in fact a flat silhouette, most depth cues were ruled out as causal factors even though they were not excluded from the laboratory conditions.

93. Alhazen S Billard Problem - Information Technology Services Discuss alhazen s Billard Problem Here, Free! Become A Member, Free! dextercioby alhazen s Billard Problem. alhazen Billiard Problem http://www.physicsforums.com/archive/t-58102_Alhazen's_Billard_Problem.html

Technology Services Mathematics General Math Alhazen's Billard Problem - Alhazen's Billard Problem Alhazen Billiard Problem (http://mathworld.wolfram.com/AlhazensBilliardProblem.html) I don't get why this problem is impossible with compass/straightedge construction. I mean can't you draw a line bisecting the two points and where that line meets the circle is the point on the circle your looking for? I'm probably understanding this problem wrong. Discuss Alhazen's Billard Problem Here, Free! dextercioby - Alhazen's Billard Problem Alhazen Billiard Problem (http://mathworld.wolfram.com/AlhazensBilliardProblem.html) I don't get why this problem is impossible with compass/straightedge construction. I mean can't you draw a line bisecting the two points and where that line meets the circle is the point on the circle your looking for? I'm probably understanding this problem wrong. It says right there on the page.It would imply extraction of cube root.It's the same as other problems in th history of mathematics and especially the trisection of an angle and the famous Delic problem,the one with the doubling of the cube. Try searching for this problem to the referenced bibliography (the 3 books mentioned there).I'm sure you'll e given a plausible mathematically rigurous explnation.

94. Alhazen - Wikipedia Translate this page Abu Ali al-Hasan Ibn Al-Haitham, latinizado como alhazen (Basora 965 - Cairo 1040).Físico e matemático árabe, alhazen foi pioneiro no estudo da óptica, http://gl.wikipedia.org/wiki/Alhazen

Wikimedia necesita a sºa axuda para acadar un fondo de 200.000 d³lares. Vexa a nosa p¡xina de recadaci³n de fondos para consultar os detalles. Alhazen Na Galipedia, a enciclopedia libre en galego. Abu Ali al-Hasan Ibn Al-Haitham , latinizado como Alhazen Basora Cairo F­sico e matem¡tico ¡rabe, Alhazen foi pioneiro no estudo da ³ptica, enxe±er­a e astronom­a, segundo Giambattista della Porta , foi o primeiro en explicar o fen³meno dos corpos celestes no horizonte, a­nda que Roger Bacon atribºe este descubrimento a Ptolomeo O seu tratado de ³ptica Kitab al-Manazir foi traducido ao lat­n por Witelo en , a obra gozou de gran reputaci³n durante a Idade Media . O libro de Alhazen © posiblemente o traballo m¡is antigo en usar o m©todo cient­fico : Alhazen empregou os resultados de experimentos para probar as sºas teor­as. A influencia de Alhazen chegou ata Francis Bacon e Johannes Kepler Tra­do desde " http://gl.wikipedia.org/wiki/Alhazen Categor­as Personalidades da astronom­a Views Artigo Discusi³n Editar Historial Ferramentas personais Rexistro Navegaci³n Portada Portal da comunidade Actualidade Cambios recentes ... Doaz³ns Procura Caixa de ferramentas P¡xinas que ligan con esta Cambios relacionados Cargar un ficheiro P¡xinas especiais ... Permanent link Outras linguas Deutsch English Norsk (bokm¥l) Nederlands ... Slovenščina Esta p¡xina foi modificada por ºltima vez o 03:25, 8 xullo 2005.

95. Index Of /duxdelux/postedimages/Alhazen/ Index of /duxdelux/postedimages/alhazen/. v Name Last Modified Size_ Parent directoryDFAc.jpg http://www.dukz.co.uk/duxdelux/postedimages/Alhazen/

Index of /duxdelux/postedimages/Alhazen/ v Name Last Modified Size Parent directory ... DFAc.jpg 20 Jul 04 13:45 23.0Kb armygirl1.jpg 20 Jul 04 13:48 14.3Kb armygirl2.jpg 20 Jul 04 13:48 11.5Kb grass.jpg 20 Jul 04 13:45 21.6Kb me.jpg 20 Jul 04 13:45 11.8Kb mebeingstupidforgirlfriend.jpg 20 Jul 04 13:48 13.3Kb moreroom.jpg 20 Jul 04 13:49 12.4Kb newride1.jpg 20 Jul 04 13:49 26.7Kb newrides.jpg 20 Jul 04 13:49 31.8Kb prep.jpg 20 Jul 04 13:47 27.5Kb room.jpg 20 Jul 04 13:47 13.5Kb viewfrommybalcony.jpg

96. Lexikon Alhazen alhazen Spektrum der WissenschaftVerlag, ISSN 0170-2971, S. 90-97. Von http//lexikon.freenet.de/alhazen http://lexikon.freenet.de/Alhazen

E-Mail Mitglieder Community Suche ... Hilfe document.write(''); im Web in freenet.de in Shopping Branchen Lexikon Artikel nach Themen alphabetischer Index Artikel in Kategorien Weitere Themen Silikon und Superstars: Peinliche Promis ziehen ins BB-Dorf ein MTV-Awards: Wilde SchieŸereien und heiŸe Outfits IAA: Moovie - futu- ristische Peugeot- Design-Studie Riester-Rente: Ungeliebtes Pro- dukt im Kommen ... Studentin Emma arbeitet nebenbei als Stripperin Sie sind hier: Startseite Lexikon Alhazen Alhazen Abu Ali al-Hasan Ibn Al-Haitham , latinisiert Alhazen , (* um in Basra in Kairo ), war ein bedeutender arabischer Mathematiker Optiker und Astronom. Obwohl er es am Hof Al-Hakims bis zum Amt eines Wesirs brachte, t¤uschte er Wahnsinn vor, um seine Beamtenlaufbahn zu beenden und sich der Wissenschaft zu widmen. In seinen zahlreichen mathematischen Werken besch¤ftigte er sich mit Problemen der Geometrie. Von gr¶Ÿter Bedeutung sind auch seine optischen Experimente. Alhazen konnte zeigen, dass Lichtstrahlen unabh¤ngig vom menschlichen Auge existieren. Bis zu diesem Zeitpunkt nahm man an, dass so genannte Sehstrahlen, die vom menschlichen Auge ausgehen sollten, die Umgebung abtasteten. Von praktischer Bedeutung waren von Alhazen hergestellte Lesesteine aus

97. Pages Changed In The Past 7 Days Datenbankbrowser perplexus zur Anzeige und Modifikation Translate this page Autor, alhazen. Synomym. Beschreibung, In abbildenden optischen Systemen kanndie Lichtquelle durch Reflexion, Brechung oder Beugung erfolgen. http://www.upscale.utoronto.ca/cgi-bin/ice2-for.pl?KEYWORDS=alhazen

98. La Recherche à L'UCL :: Description Du Projet "L'Optique D'Alhazen. Edition Cri alhazen. Edition critique de la versionlatine du Livre 7. http://rch.adre.ucl.ac.be/browse/list_fac/EGLA/complete/568

English version Inventaire des recherches L'Optique d'Alhazen. Edition critique de la version latine du Livre 7. (Faculté de philosophie et lettres / Département d'études grecques, latines et orientales / EGLA) [ Détail du projet ] Liste des projets Liste des unités Imprimer Accueil Planification Début Fin Description du projet de recherche Edition critique de la version latine médiévale, traduction française et commentaire du dernier livre de l'Optique d'Alhazen (Ibn al-Haytham) Equipe du projet Responsable(s) ALLARD André Chercheur(s) ALLARD André, PIETQUIN Paul, SMITH Mark Objectifs (code NABS) Sciences humaines ( Code 10.9 ) Physique ( Code 10.1 ) Disciplines scientifiques (CRef) Optique ( Code 1250 ) Histoire culturelle ( Code 5140 ) Mots-clés n/a Collaborations nationales et internationales American Philosophical Society, USA Financement Autres ressources extérieures UCL ADRE La recherche à l'UCL Répertoires UCL ... Accueil Responsable: Dominique Opfergelt Conception technique: Marianne Michel Mise à jour: 07/09/2004 (14:22:57) Support: Anne Bovy (ADRE) Mise à jour des informations: 20/06/2002

99. Encyclopedia: Alhazen Golem.de Lexikon - Translate this page Dieser Artikel basiert auf dem Artikel alhazen aus der freien alhazen konntezeigen, dass Lichtstrahlen unabhängig vom menschlichen Auge existieren. http://www.nationmaster.com/encyclopedia/Alhazen

Supporter Benefits Signup Login Sources ... Pies Related Articles People who viewed "Alhazen" also viewed: Witelo Light Abu Yusuf Yaqub ibn Ishaq al_Sabbah Al_Kindi Ehsan Yarshater ... Cumrun Vafa What's new? Our next offering Latest newsletter Student area Lesson plans Recent Updates UEFA Champions League U.S. Highway 66 Treehouse of Horror XII Treasure Planet ... More Recent Articles Top Graphs Richest Most Murderous Most Taxed Most Populous ... More Stats Encyclopedia: Alhazen Updated 2 hours 37 minutes ago. Other descriptions of Alhazen Alhazen Abu Ali al-Hasan Ibn Al-Haitham (also: Ibn al Haythen ), was an Iranian Arab mathematician ; he is sometimes called al-Basri , after his birthplace. Events March 1 - Pope Benedict V is put in place of Pope Leo VIII by the people October 1 - John XIII becomes Pope The Khazar fortress of Sarkel falls to the Kievan Rus Births Sweyn I of Denmark Deaths February 22 - Odo, Duke of Burgundy July 4 - Pope Benedict V... Events March War of Independence of Western Xia occurred. ... A mathematician is a person whose area of study and research is mathematics. ...

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