21. Willebrord Van Roijen Snell (1591 - 1626) Translate this page willebrord van Roijen snell. willebrord van Roijen snell nasceu em 1580 na cidadede Leyden, Países Baixos, e faleceu na mesma cidade em 30 outubro 1626. http://br.geocities.com/saladefisica9/biografias/snell.htm

Biografias Willebrord van Roijen Snell Willebrord van Roijen Snell nasceu (Cidade de Leiden em 1626) Snell Eratosthenes Batavus senos Dioptrica Tiphys batavus www.saladefisica.cjb.net

22. Biografias De Físicos Translate this page PLATO PTOLOMEU, Cláudio. R. ROENTGEN, Wilhelm Konrad. RUTHERFORD, Ernest. S. SCHRÖDINGER,Erwin snell, willebrord van Roijen. STEVIN, Simon. T. TALES TESLA, Nikola. http://br.geocities.com/saladefisica9/

Biografias A ARISTARCO ARQUIMEDES B BECQUEREL, Antoine Henri BELL, Alexander Graham BERNOULLI, Daniel BOHR, Niels Henrik David ... BROGLIE, Louis de C CAVENDISH, Henry CELSIUS, Anders COULOMB, Charles Augustin de CURIE, Pierre e Marie D DOPPLER, Christian Johann E EDISON, Thomas Alva EINSTEIN, Albert F FAHRENHEIT, Gabriel Daniel FARADAY, Michael FIZEAU, Armand Hyppolyte Louis FRANKLIN, Benjamin G GALILEI, Galileu GALVANI, Luigi GAUSS, Carl Friedrich GILBERT, William ... GUTENBERG, Johannes H HEISENBERG, Werner Karl HERTZ, Heinrich Rudolf HIPARCO HOOKE, Robert ... HUYGENS, Christiaan J, K JOULE, James Prescott KELVIN, Lord (William Thomson) KEPLER. Johann L LANDAU, Lev Davidovich LORENTZ, Hendrik Antoon M MARCONI, Guglielmo MAXWELL, James Clerk MICHELSON, Albert Abraham MILLIKAN, Robert Andrews ... MORSE, Samuel Finley Breese N, O NEWTON, Isaac OERSTED, Hans Christian OHM, Georg Simon P PASCAL, Blaise PLANCK, Max K. E. Ludwig R ROENTGEN, Wilhelm Konrad RUTHERFORD, Ernest S SNELL, Willebrord van Roijen STEVIN, Simon T TALES TESLA, Nikola THOMSON, Joseph John TORRICELLI, Evangelista V VAN DE GRAAFF, Robert Jemison

23. Snell | Willebrord | 1591-1626 | Dutch Mathematician snell willebrord 15911626 Dutch mathematician. Gregory Papers (1675-1713);David Gregory Papers (1675-1713); Excerpta et notanda in Kepleri http://www.nahste.ac.uk/pers/s/GB_0237_NAHSTE_P1104/

the project the collections biographies multimedia the project the collections biographies multimedia ... Index Chartarum in M.S. C. in folio

24. People Index: S snell willebrord 15911626 Dutch mathematician; Sollas William Johnson 1849-1936 professor of geology and paleontology, University of Oxford; http://www.nahste.ac.uk/pers/s/

the project the collections biographies multimedia ... Z People index: S

25. Molecular Expressions Microscopy Primer: Light And Color - Refraction Of Light willebrord snell (15801626) - willebrord snell was an early seventeenth centuryDutch mathematician who is best known for determining that transparent http://micro.magnet.fsu.edu/primer/lightandcolor/refractionhome.html

Microscopy Primer Light and Color Microscope Basics Special Techniques ... Home The Galleries: Photo Gallery Silicon Zoo Pharmaceuticals Chip Shots ... Movie Gallery Refraction of Light When electromagnetic radiation, in the form of visible light, travels from one substance or medium into another, the light waves may undergo a phenomenon known as refraction , which is manifested by a bending or change in direction of the light. Refraction occurs as light passes from one medium to another only when there is a difference in the index of refraction between the two materials. The effects of refraction are responsible for a variety of familiar phenomena, such as the apparent bending of an object that is partially submerged in water and the mirages observed on a dry, sandy desert. The refraction of visible light is also an important characteristic of lenses that enables them to focus a beam of light onto a single point. Introduction to the Refraction of Light - As light passes from one substance into another, it will travel straight through with no change of direction when crossing the boundary between the two substances head-on (perpendicular, or a 90-degree angle of incidence). However, if the light impacts the boundary at any other angle it will be bent or refracted, with the degree of refraction increasing as the beam is progressively inclined at a greater angle with respect to the boundary. As an example, a beam of light striking water vertically will not be refracted, but if the beam enters the water at a slight angle it will be refracted to a very small degree. If the angle of the beam is increased even further, the light will refract with increasing proportion to the entry angle. Early scientists realized that the ratio between the angle at which the light crosses the media interface and the angle produced after refraction is a very precise characteristic of the material producing the refraction effect.

26. WIEM: Snell Van Royen Willebrord (encyklopedia.pl)Category World Polska Leksykon Encyklopedia encyklopedia.pl S......snell van Royen willebrord, snellius (15801626), niderlandzki matematyk,astronom, fizyk i geodeta. Profesor uniwersytetu w Lejdzie (od 1613 http://wiem.onet.pl/wiem/012af0.html

wiem.onet.pl napisz do nas losuj: has³a multimedia Fizyka, Matematyka, Astronomia, Geografia, Holandia Snell van Royen Willebrord widok strony znajd¼ podobne poka¿ powi±zane Snell van Royen Willebrord, Snellius (1580-1626), niderlandzki matematyk, astronom, fizyk i geodeta. Profesor uniwersytetu w Lejdzie (od 1613). Opracowa³ zasadê pomiarów triangulacyjnych i na ich podstawie wyznaczy³ d³ugo¶æ po³udnika (1615-1617). Sformu³owa³ prawa optyki geometrycznej prawo za³amania ¶wiat³a i  prawo odbicia ¶wiat³a Odwied¼ w Internecie Astronomia Powi±zania Triangulacja Za³amania ¶wiat³a prawo Optyka Odbicie ¶wiat³a ... do góry Encyklopedia zosta³a opracowana na podstawie Popularnej Encyklopedii Powszechnej Wydawnictwa Fogra

27. Snell, Willebrord snell, willebrord 15911626, Dutch mathematician. He is generally credited withthe discovery (1621) of the law of the refraction of light. snell, willebrord. http://www.slider.com/enc/49000/Snell_Willebrord.htm

Home Encyclopeadia S Six - Sme ... Rope Ladders Slider Search: The Web Encyclopaedia Shopping Index Help Encyclopaedia Snell, Willebrord 1591-1626, Dutch mathematician. He is generally credited with the discovery (1621) of the law of the refraction of light. In 1613 he became professor of mathematics at the Univ. of Leiden. His two chief works are Eratosthenes Batavus (1617) and Cyclometricus Add URL Advertise Contact Us

28. Sme - Soc snapping turtle snapweed snare drum Snead, Samuel Jackson sneeze sneeze gas sneezeweed,Snefru snell's law snell, George Davis snell, willebrord snelling, Fort http://www.slider.com/enc/s_19.htm

Vendercom Hosting Solutions Home Encyclopeadia S S - Sah ... Rope Ladders Trellian WebPage Slider Search: The Web Encyclopaedia Shopping Index Help Encyclopaedia Sme - Soc Smetona, Antanas Smibert, John Smigly-Rydz, Edward smilax ... Contact Us

29. Biography: Famous Physicists by Amanda Perrin. Ruska, Ernest (19061988) by Morgan Brookings,snell, willebrord (1580-1626) by Wally Bishop. Tesla, Nikola (1856 http://www.qerhs.k12.nf.ca/projects/physics/bio.htm

Biography: Famous Physicists Physics is more than just about concepts and theories, it is more than protons, electrons, energy and motion. Physics is about our attempts to understand the natural phenomena of our universe. In studying physics we are studying theories constructed by physicists; therefore, we should also strive to understand these famous physicists, as well as the era and environment which influenced their theories. For example, during the middle of the 1900's World War II influenced nuclear physics, and during the second half of the 1900's telecommunications influenced solid state physics. To better understand physics and the key people behind the theories, high school students have developed an inventory of biographies of physicists. This resource is free for others to use and we encourage all who wish to contribute. Still growing, Mar.28, 2001. Ampere, Andre (1775-1836) by Kate Tilley Archimedes (287-212 BC) by Bekki Whalen Aristotle (384-322 BC) by Crystal Smith Bernoulli, Daniel (1700-1782)

30. Willebrord Snell Translate this page willebrord snell (1580-1626). willebrord van Roijen snell, detto anchesnellius, studiò legge all'Università di Leiden (Olanda) ma http://www.vialattea.net/eratostene/tempesti/snellius.html

Willebrord Snell (1580-1626) Eratosthenes Batavus dove proponeva il suo metodo di triangolazione per misurare la Terra che gettava le basi della moderna geodesia.

31. SNELL Translate this page snell, willebrord van Roijen. Nascido em 1580 em outubro 1626. willebrordsnell estudou Direito na universidade Leyden. Porém, muito http://www.cobra.pages.nom.br/fm-Snell.html

COBRA PAGES e seus objetivos educacionais reg. Quem somos COBRA PAGES P.M.F-perguntas mais frequentes Filosofia Moderna e Temas de Filosofia Comportamento Boas Maneiras Feminismo ... CONTACTO NOTAS Para retornar COBRA PAGES em que estava, use a seta de volta do seu navegador Snell, Willebrord van Roijen Eratosthenes Batavus Dioptrica Tiphys batavus R.Q.Cobra Para citar este texto: Cobra, Rubem Queiroz -

32. S/SN SNAIL SNAKE-BIRD SNAKE-FLY SNAKE-ROOT SNAKES SNAPDRAGON SNAIL SNAKEBIRD SNAKE-FLY SNAKE-ROOT SNAKES SNAPDRAGON SNEEK SNEEZING snell, HANNAHsnell, JOHN snell, willebrord SNIP SNAP SNOREM SNIPE SNOILSKY, CARL JOHAN http://1911encyclopedia.org/S/SN/

S/SN SNAIL SNAKE-BIRD SNAKE-FLY SNAKE-ROOT ... SNYDERS, FRANZ

33. Physicists vector. snell, willebrord (15911626) willebrord snell, a professorat Leyden, discovered the law of refraction empirically in 1621. http://www.physics.nwu.edu/ugrad/vpl/physicists.html

Physicists Index Atomic Physics Mechanics Optics ... Waves Brewster, David Sir David Brewster made the first empirical determination of what is now know as Brewster's angle in 1812. Descartes, Rene Rene Descartes was the first to publish the law of refraction in terms of sines. Fermat, Pierre de Pierre de Fermat formulated the now famous principle of least time in 1657. Fresnel, Augustin Jean French physicist Augustin Jean Fresnel made the first calculation of diffraction patters from various obstacles. Galilei, Galileo Galileo Galilei was an Italian astronomer, physicist, and mathematician, is the father of kinematics. After building one of the first telescopes, Galileo discovered four moons of Jupiter in 1610. Huygens, Christiaan Dutch physicist Christiaan Huygens, discovered the phenomena of polarization, derived the laws of reflection and refraction, and formulated what is now known as Huygens principle Kepler, Johannes In addition to his work on celestial mechanics, Kepler made the first discovery of total internal reflection sometime before 1611. Maxwell, James Clerk

34. Willebrord Snell Demo's Applets Laboproeven Materiaal Video Lusfilm SoftwareHandleiding Zoeken willebrord snell (snellius) (15801626). http://www.fys.kuleuven.ac.be/pradem/fysici/Snell.html

Pradem Leuven Demo's Applets Laboproeven ... Zoeken Willebrord Snell (Snellius) (1580-1626) 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 Pradem Leuven Premonstreitcollege Plan Naamsestraat 61 3000 Leuven Opmaak: Tony Verheyden Laatste wijziging: 22-aug-02

35. Willebrord Van Roijen Snell Translate this page willebrord van Roijen snell era filho de um professor de Matemáticada Universidade de Leiden. Em 1613, sucedeu o pai nessa função. http://www.fisicafacil.pro.br/snell.htm

Clique aqui para fechar esta janela Voltar a página anterior ESTUDO DA FÍSICA O SEU SITE DE ESTUDO NA NET SNELL MATEMÁTICO HOLANDÊS (1591 - 1626) Willebrord van Roijen Snell era filho de um professor de Matemática da Universidade de Leiden. Em 1613, sucedeu o pai nessa função. Quatro anos maìs tarde, criou um método para determinar distâncias por meio de triangulação trigonométrica. Esse método é utilizado até hoje para executar mapeamentos topográficos. (É a base, inclusive, para os efetuados com auxílio de satélites.) No campo da Optica, Snell analisou o desvio que um raio de luz sofre ao passar obliquamente de um meio menos denso a outro mais denso (por exemplo, do ar para a água). Desde o século I já se sabia que esses dois ângulos diferentes, formados entre o raio e a perpendicular à fronteira entre os meios, guardavam entre si uma proporcionalidade que se mantinha mesmo quando a posição da fonte de luz era alterada. Snell refinou essas observações e, através de medidas mais acuradas, descobriu haver uma relação constante entre os senos desses ângulos. Tal conclusão só seria publicada doze anos após sua morte por Descartes, o qual, no entanto, não citou seu autor. BIBLIOGRAFIA CHIQUETTO, Marcos; VALENTIM, Bárbara; PAGLIARI, Estéfano; Aprendendo Física; Editora Scipione; São Paulo; 1996

36. Short Biographies : Si snell, willebrord van Roijen 1580 30 Oct 1626 Dutch An astronomerand mathematician best known for his law of refraction of light. http://physics.hallym.ac.kr/reference/physicist/Si.html

Snell , Willebrord van Roijen 1580 - 30 Oct 1626 Dutch An astronomer and mathematician best known for his law of refraction of light. In 1613 he succeeded his father Rudolph Snell (1546-1613) as professor of mathematics at the University of Leiden. He studied the loxodrome the path on the sphere that makes constant angle with the meridians. In 1617 he published Eratosthenes Batavus , which contains his methods for measuring the earth. He also improved the classical method of calculating approximate values of by polygons. Using his method 96 sided polygons give correct to 7 places while the classical method yields only 2 places. van Ceulen 's 35 places could be found with polygons of 2^30 sides rather than 2^62. Although he discovered the law of refraction, a basis of modern geometric optics, in 1621, he did not publish it and only in 1703 did it become known when Huygens published Snell's result in Dioptrica Origin Sommerfeld , Arnold Johannes Wilhelm 5 Dec 1868 - 26 Apr 1951 German He worked on wave mechanics and thermodynamics. He was taught by

37. Great Physicists Julian (19181994); snell, willebrord van Roijen (1580 - 1626); Sommerfeld,Arnold Johannes Wilhelm (1868 - 1951); Thomson, Benjamin http://physics.hallym.ac.kr/reference/physicist/physicist.html

Great Physicists Most of the following materials are from History of Mathematics Archive , St Andrews Univ., UK. For links that don't work, go to the original places above. Newton, Sir Isaac (1643 - 1727) Isaac Newton Another biography of Isaac Newton Newton's Life Yet another biography of Newton Maxwell, James Clerk (1831 - 1879) IEEE The Genius of James Clerk Maxwell Part II The Genius of James Clerk Maxwell Part III ... Franklin, Benjamin : to Franklin Institute Science Museum at Philadelphia Geiger, Hans Gell-Mann, Murray Goudsmit, Samuel Abraham (1902-1978) Halley, Edmond (1656 - 1742) ... Millikan, Robert : Caltech Photo Archive Minkowski, Hermann (1864 - 1909) von Neumann, John (1902 - 1957) here Ohm, Georg Simon (1789 - 1854) ... Noted Figures in Physics, Engineering and Astronomy

38. Physikmania - Biographien Translate this page 1879 baute er die erste elektrische Eisenbahn der Welt und die erste elektrischeStraßenbahn. willebrord van Royen snell §snell,willebrord van Royen geb. http://www.physikmania.de/html/biogr_s.html

Abdus Salam Eugen Sänger Felix Savart Christoph Scheiner ... Fritz Straßmann Abdus Salam geb. 29.1.1926 Jhang pakistanischer Physiker, Nobelpreis 1979 Eugen Sänger geb.1905,gest.1964, dt. Raketentechniker arbeitete u.a. über Photonenraketen und schuf die theoretischen Grundlagen für den Raum- transporter Felix Savart geb.1791,gest.1841, frz. Physiker arbeitete u.a. über Akustik und Elektromagne- tismus. Christoph Scheiner geb. 25.7.1573 Markt Wald gest. 18.7.1650 Neiße, dt. Astronom entdeckte 1611 die Sonnenflecken. Julius Scheiner geb.1858,gest.1913, dt. Astronom Arbeitsgebiet: Spektralanalyse der Gestirne Paul Scherrer geb.1890,gest.1969, schweiz. Physiker arbeitete über den Aufbau von Kristallen und Atomkernen Giovanni Virginio Schiaparelli geb.1835,gest.1910, ital. Astronom entdeckte 1877 die »Marskanäle« John Robert Schrieffer geb.31.5.1931 Oak Park, US-amerik. Physiker Arbeiten über Supraleitung, Nobelpreis 1972 Erwin Schrödinger geb. 12.8.1887 Wien gest. 4.1.1961 Wien, östr. Physiker 1921-27 Professor in Zürich, dann in Berlin

39. Willebrord Snellius Translate this page snell's Law. Molecular Expressions Science, Optics and You - Timeline - willebrordsnell. Erstellt am 04.02.2001, Zuletzt geändert am 03.02.2002. http://www.niester.de/p_natwis/snellius/snellius.html

Willebrord Snellius Hauptseite/Main Page Deutsch English Willebrord Snellius Snell's Law Molecular Expressions: Science, Optics and You - Timeline - Willebrord Snell Erstellt am:

40. Snell's Law Song C Am G G7. I sing of the genius of willebrord snell. C Em F C. A mathematician wholived long ago. C Em F C. But we prefer willebrord van Roijen snell . C C G7 C. http://www.haverford.edu/physics-astro/course_materials/phys213/Snell.htm

Snell’s Law Song Tune: Sweet Betsy from Pike (traditional) C C C Come listen and learn, I’ve a story I tell, C Am G I sing of the genius of Willebrord Snell C Em F C A mathematician who lived long ago C C C In the Netherlands where the Rhine river does flow. Willebrord van Roijus Snell (Note that the first name is actually pronounced “Villbrort”, but in the song is pronounced “Vill-e-brort”.) C C C He set for his mind occupations of worth, C Am G Improved navigation and measured the Earth! C Em F C He gave us the sine law, that wonderful guy, C C C And he made more precise calculation of pi! C F (or C) G (or G7) Am (or C) Singin’ n1 sine theta-sub-1, hey, hey, hey, C F (or C) G (or G7) C Equals n2 sine theta-sub-2, hip hooray! C C C His greatest feat came in Sixteen Twenty-one, C Am G When optics as science was really begun! C Em F C While flashes of lightning illumined his page, C C C He wrote down Snell’s law, his great gift to the age! C C C So if you wear glasses or like to fry ants, C Am G Be grateful your lenses were not made by chance! C Em F C Astronomers hail him with each new-found star!

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 2     21-40 of 90    Back | 1  | 2  | 3  | 4  | 5  | Next 20