1. Snell Biography of Willebrord Snell (15801626) http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

2. Willebrord Snell Willebrord Snell (15801626) Willebrord van Roijen Snell, detto anche Snellius, studi legge all'Universit di Leiden (Olanda) ma i suoi interessi http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

3. Poster Of Snell Willebrord Snell. lived from 1580 to 1626. Willebrord Snell is best known forthe law of refraction, a basis of modern geometric optics but it only become http://www-groups.dcs.st-and.ac.uk/~history/Posters2/Snell.html

Willebrord Snell lived from 1580 to 1626 Willebrord Snell is best known for the law of refraction, a basis of modern geometric optics but it only become known after his death when Huygens published it. Find out more at http://www-history.mcs.st-andrews.ac.uk/history/ Mathematicians/Snell.html

4. Snell, Willebrord. The Columbia Encyclopedia, Sixth Edition. 2001-05 Snell, Willebrord. The Columbia Encyclopedia, Sixth Edition. 200105 http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

5. Willebrord Snellius Handleidingen Software Materiaal Video's Lusfilms FysicaLinks Departement Faculteit Fysici Willebrord Snell http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

6. Willebrord Snell Snell, Willebrord (The Columbia Encyclopedia, Sixth Edition) Snell, Willebrord (15801626) (The Hutchinson Dictionary of Scientific Biography) http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

7. Refraction Of Light Snell's Law. In 1621, a Dutch physicist named Willebrord Snell (15911626), derived the relationship between the different angles of light as it http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

8. Willebrord Snell Willebrord Snell Image Link Willebrord Snell (1580 October 30, 1626), also known as Snell van Royen or Snellius, was a Dutch astronomer http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

9. Willebrord Snell Willebrord Snell. Snell's Law explaining the way in which a light ray is bent as it passes from one medium (for example, air) to another medium (for http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

10. Willebrord Snell Willebrord Van Roijen Snell Willebrord Snell Willebrord van Roijen Snell. Willebrord Snell (15911626), also known as Snellitjs or Snellitis, was a Dutch astronomer and http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

11. Snell, Willebrord Snell, Willebrord (15811626) Dutch mathematician and physicist who devised the basic law of refraction, known as Snell's law, in 1621. He also http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

12. Willebrord Van Roijen Snell - Wikipedia Translate this page NAME, Snell, Willebrord van Roijen. ALTERNATIVNAMEN, Snell van Royen oder Snellius.KURZBESCHREIBUNG, niederländischer Astronom und Mathematiker http://de.wikipedia.org/wiki/Willebrord_van_Roijen_Snell

Es ist geschafft - unser Spendenziel von 200.000$ ist erreicht . Herzlichen Dank an alle Spender. Willebrord van Roijen Snell aus Wikipedia, der freien Enzyklop¤die Willebrord Snell. Willebrord van Roijen Snell in Leiden Niederlande 30. Oktober ebd.), auch bekannt als Snell van Royen oder Snellius, war ein niederl¤ndischer Astronom und Mathematiker . Er ist bekannt f¼r die Entwicklung des optischen Brechungsgesetzes , nach ihm bekannt als Snelliussches Brechungsgesetz Personendaten NAME Snell, Willebrord van Roijen ALTERNATIVNAMEN Snell van Royen oder Snellius KURZBESCHREIBUNG niederl¤ndischer Astronom und Mathematiker GEBURTSDATUM GEBURTSORT Leiden Niederlande STERBEDATUM 30. Oktober STERBEORT Leiden Von " http://de.wikipedia.org/wiki/Willebrord_van_Roijen_Snell Einordnung Astronom der Neuzeit Mathematiker ... Gestorben 1626 Diese Seite Artikel Diskussion Seite bearbeiten Versionen/Autoren Pers¶nliche Werkzeuge Anmelden oder neues Benutzerkonto erstellen Navigation Hauptseite Wikipedia-Portal Aktuelle Ereignisse Letzte „nderungen ... Spenden Suche Werkzeuge Links auf diese Seite Verlinkte Seiten Hochladen Spezialseiten ... Permanentlink Andere Sprachen English Espa±ol Fran§ais Ido ... Impressum Der Inhalt dieser Seite steht unter der GNU-Lizenz f¼r freie Dokumentation œber Wikipedia Lizenzbestimmungen

13. Willebrord_Snell imageWillebrord_Snell.jpg thumb 150px Willebrord Snell. Willebrord Snell (1580 –October 30, 1626), also known as Snell van Royen or http://copernicus.subdomain.de/Willebrord_Snell

Suche: Main Page '''Willebrord Snell''' ( October 30 ), also known as '''Snell van Royen''' or '''Snellius''', was a Dutch astronomer and mathematician , most famous for the law of refraction now known as Snell's law Snell was born at Leiden . In he succeeded his father Rudolph Snell ( ) as professor of mathematics in the University of Leiden . In he planned and carried into practice a new method of finding the radius of the earth, by determining the distance of one point on its surface from the parallel of latitude of another, by means of triangulation . His work ''Eratosthenes Batavus'' ("The Dutch Eratosthenes "), published in , describes the method and gives as the result of his operations between Alkmaar and Bergen op Zoom km ). The actual distance is approximately 111 km. Snell was also a distinguished mathematician, producing a new method for calculating . He died at Leiden on October 30 In addition to the ''Eratosthenes Batavus'' he published ''Cyclometria sive de circuli dimensione'' ( ), and ''Tiphys Batavus'' ( ). He also edited ''Coeli et siderum in eo errantium observationes Hassiacae'' (

14. Snell Willebrord Snell was an early seventeenth century Dutch mathematician who is best Willebrord van Roijen Snell died at the young age of 46 on the 30 of http://www.qerhs.k12.nf.ca/projects/physics/snell.html

WILLEBRORD SNELL Willebrord Snell was an early seventeenth century Dutch mathematician who is best known for his discovery of refraction. He was born in 1580 in a place called Lieden. Snell began to study math at a very young age as he was very interested in it. his father, Rudolph Snell, was a professor of mathematics at Leiden. Willebrord entered the university of Leiden at a young age where he originally studied law. Not long after, he turned his attention towards math and started teaching at the university by the time he was 20. After finishing with a degree, he traveled to eastern Europe and visited most of the famous astronomers today. In 1613, Snell succeeded his father as professor of mathematics. In 1617, he published "Eratosthenes Batavus", which explained his methodology for measuring the earth by triangulation. Snell had difficulty in finishing the book, however , he got help to finish it. Snell published other books, including his work on comets and in 1624 he published "Tiphys Batavus". This piece of work was on navigational theories. Although Snell discovered the law of refraction, he didn't publish it. He discovered this in 1621 and only in 1703 did it become known when "Huygens" published his results in "Dioptrica".

15. Willebrord Snell Willebrord Snell. Snell s Law explaining the way in which a light ray is bent asit passes from one medium (for example, air) to another medium (for example http://www.math.duke.edu/education/prep03/FermatsPond/FermatsPond/Snell/Snell.ht

Willebrord Snell Snell's Law explaining the way in which a light ray is bent as it passes from one medium (for example, air) to another medium (for example, water) is described below in an excerpt from Calculus, Concepts and Contexts , by James Stewart.

16. Willebrord Snell - Wikipédia Willebrord Snell. Willebrord Snell (1580-1626) passades études de droit aux mathématiques et a finalement succédé à son père http://fr.wikipedia.org/wiki/Willebrord_Snell

Wikim©dia a besoin de votre aide Willebrord Snell Un article de Wikip©dia, l'encyclop©die libre. Cet article est une ©bauche   compl©ter concernant les math©matiques , vous pouvez partager vos connaissances en le modifiant Willebrord Snell Willebrord Snell ) passa des ©tudes de droit aux math©matiques et a finalement succ©d©   son p¨re en tant que professeur de math©matiques   l' Universit© de Leyde . Bien qu'il ait d©couvert la loi de la r©fraction appel©e maintenant loi de Snell ou loi de Snell-Descartes en France, il n'en a pas publi© le r©sultat et son exclusivit© n'a pas ©t© reconnue jusqu'  ce que Huygens ne mentionne la d©couverte de Snell dans son travail environ soixante-dix ans plus tard. Portail Physique - Acc©dez d'un seul coup d’œil   toute la s©rie des articles de Wikip©dia concernant la physique. R©cup©r©e de « http://fr.wikipedia.org/wiki/Willebrord_Snell Cat©gories Naissance en 1580 D©c¨s en 1626 ... Wikip©dia:©bauche math©matiques Affichages Article Discussion Modifier cet article Historique Outils personels Cr©er un compte ou se connecter Navigation Accueil Communaut© Actualit©s Modifications r©centes ... Faire un don Rechercher Bo®te   outils Pages li©es Suivi des liens Importer une image ou un son Pages sp©ciales ... Lien permanent Autres langues Deutsch English Espa±ol Ido ... Svenska Derni¨re modification de cette page le 27 ao»t 2005   12:52.

17. Willebrord Snell - Wikipedia, The Free Encyclopedia slWillebrord Snell van RoyennlWillebrord snell willebrord Snell (1591—October30, 1626), also known as Snell van Royen or Snellius, was a Dutch astronomer http://www.usindexlist.de/keyword/Willebrord_Snell.php

Not logged in Log in Help Willebrord Snell This is NOT the Wikipedia - The content is from the Wikipedia sl:Willebrord Snell van Royennl:Willebrord Snell Willebrord Snell October 30 ), also known as Snell van Royen or Snellius , was a Dutch astronomer and mathematician , most famous for the law of refraction now known as Snell's law Snell was born at Leiden in . In he succeeded his father Rudolph Snell ( ) as professor of mathematics in the University of Leiden . In he planned and carried into practice a new method of finding the radius of the earth, by determining the distance of one point on its surface from the parallel of latitude of another, by means of triangulation . His work Eratosthenes Batavus ("The Dutch Eratosthenes "), published in , describes the method and gives as the result of his operations between Alkmaar and Bergen op Zoom km ). The actual distance is approximately 111 km. Snell was also a distinguished mathematician, producing a new method for calculating the first such improvement since ancient times. He discovered the law of refraction that is named after him in . He died at Leiden on the October 30 In addition to the Eratosthenes Batavus he published Cyclometria sive de circuli dimensione ), and

18. Willebrord_van_Roijen_Snell - Lexikon - Willebrord_van_Roijen_Snell - Beschreibu Translate this page Willebrord van Roijen Snell. aus Physik, der freien Enzyklopädie. Willebrord Snell.vergrößern. Willebrord Snell. Willebrord van Roijen Snell (* 1580 in http://www.physik-lexikon.de/wiki/index.php?title=Willebrord_van_Roijen_Snell

19. Snell, Willebrord (1591-1626) -- From Eric Weisstein's World Of Scientific Biogr snell, willebrord (15911626) Despite snell having his name attached to thislaw, the law of refraction had been investigated as long ago as Pythagoras http://scienceworld.wolfram.com/biography/Snell.html

Branch of Science Mathematicians Nationality Dutch Snell, Willebrord (1591-1626) Dutch mathematician who discovered Snell's law of refraction which states that , where n i are the indices of refraction and are the angles from the normal. Despite Snell having his name attached to this law, the law of refraction had been investigated as long ago as Pythagoras and was first published by Descartes Descartes Pythagoras Additional biographies: MacTutor (St. Andrews)

20. Snell Biography of willebrord snell (15801626) willebrord snell studied law atthe University of Leiden but was very interested in mathematics and taught http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Snell.html

Willebrord van Roijen Snell Born: 1580 in Leiden, Netherlands Died: 30 Oct 1626 in Leiden, Netherlands Click the picture above to see two larger pictures Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Version for printing Willebrord Snell studied law at the University of Leiden but was very interested in mathematics and taught mathematics even while he studied law. From about 1600 he travelled to various European countries, mostly discussing astronomy. In 1602 he went to Paris where his studies continued. He received his degree from Leiden in 1607. Snell's father, Rudolph Snell (1546-1613), was professor of mathematics at Leiden and, in 1604, Willebrord visited Switzerland with his father. In 1613 he succeeded his father as professor of mathematics at the University of Leiden. In 1617 Snell published Eratosthenes Batavus , which contains his methods for measuring the Earth. He proposed the method of triangulation and this work is the foundation of geodesy. Snell also improved the classical method of calculating approximate values of p by polygons. Using his method 96 sided polygons give

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