41. Torinoscienza.it > Friedrich Wilhelm Bessel Translate this page iscriviti alla newsletter Compagnia di San Paolo. Friedrich wilhelm bessel. Friedrichwilhelm bessel Fonte http//jeff560.tripod.com/. Banner Trimestrale N. 3. http://www.torinoscienza.it/galleria_multimediale/apri?obj_id=1492

42. WIEM: Bessel Friedrich Wilhelm bessel Friedrich wilhelm (17841846), astronom i matematyk niemiecki, profesoruniwersytetu w Królewcu, zalozyciel i dyrektor tamtejszego http://wiem.onet.pl/wiem/007ea5.html

WIEM 2004 - zobacz now± edycjê encyklopedii! Kup abonament i encyklopediê na CD-ROM, sprawd¼ ofertê cenow±! Oferta specjalna abonamentów dla szkó³ i instytucji! Uwaga! Przedstawione poni¿ej has³o pochodzi z archiwalnej edycji WIEM 2001! Prace redakcyjne nad edycj± 2001 zosta³y zakoñczone. Zapraszamy do korzystania z nowej, codziennie aktualizowanej i wzbogacanej w nowe tre¶ci edycji WIEM 2004 Astronomia, Matematyka, Niemcy Bessel Friedrich Wilhelm Bessel Friedrich Wilhelm (1784-1846), astronom i matematyk niemiecki, profesor uniwersytetu w Królewcu, za³o¿yciel i dyrektor tamtejszego obserwatorium astronomicznego. Sformu³owa³ i rozwi±za³ równanie ró¿niczkowe opisuj±ce drgania membrany ko³owej, nazwane od jego imienia równaniem Bessela , a rozwi±zania tego równania s± funkcjami Bessela Pierwszy wyznaczy³ elipsoidê daj±c± przybli¿ony kszta³t Ziemi (1842), przewidzia³ istnienie nastêpnej planety za Uranem , zajmowa³ siê ponadto wyznaczaniem orbit komet i jako jeden z pierwszych wyznaczy³ paralaksê heliocentryczn± gwiazd. Zajmowa³ siê ponadto innymi zagadnieniami astrometrycznymi. WIEM zosta³a opracowana na podstawie Popularnej Encyklopedii Powszechnej Wydawnictwa Fogra zobacz wszystkie serwisy do góry

43. Bessel, Friedrich Wilhelm bessel, Friedrich wilhelm, frEd rikh vil helm bes ul Pronunciation Key. bessel,Friedrich wilhelm , 1784–1846, German astronomer and mathematician. http://www.factmonster.com/cgi-bin/id/A0807297.hmtl

Encyclopedia Bessel, Friedrich Wilhelm [fr E u l] Pronunciation Key Bessel, Friedrich Wilhelm Argelander . Through observing the variations of the proper motions of Sirius and Procyon, he concluded that they possessed dimmer companions, which was verified a century later by astronomers. Bessel's works on astronomy include Fundamenta Astronomiae (1818) and Astronomische Untersuchungen The Columbia Electronic Encyclopedia, Bessarion Bessemer Print this page Cite this page AD AD AD ADS Link to Fact Monster Add Fact Monster search to your site ... Privacy Brought to you by:

44. Friedrich Wilhelm Bessel Friedrich wilhelm bessel (17841846). German astronomer and mathematician,the first person to find the approximate distance to a http://astroinfo.port5.com/b/friedrich_wilhelm_bessel.html

Friedrich Wilhelm Bessel German astronomer and mathematician, the first person to find the approximate distance to a star by direct methods when he measured the parallax (annual displacement) of the star 61 Cygni in 1838. In mathematics, he introduced the series of functions now known as Bessel functions. Bessel's work laid the foundations of a more accurate calculation of the scale of the universe and the sizes of stars, galaxies, and clusters of galaxies. In addition, he made a fundamental contribution to positional astronomy (the exact measurement of the position of celestial bodies), to celestial mechanics (the movements of stars), and to geodesy (the study of the Earth's size and shape). In 1840 he predicted the existence of Neptune. Site Map Category Main Page About Us

45. Pour Le Mérite - Friedrich Wilhelm Bessel Born 22 July 1784 in Minden, Westphalia Died 17 March 1846 in Königsberg,Prussia wilhelm bessel s father was a civil servant in Minden. http://www.pourlemerite.org/peace/friedrichwilhelmbessel.html

Born: 22 July 1784 in Minden, Westphalia Died: 17 March 1846 in Königsberg, Prussia Wilhelm Bessel's father was a civil servant in Minden. Bessel attended the Gymnasium in Minden for four years but he did not appear to be very talented, finding Latin difficult. The fact that he later became proficient in Latin, teaching himself the language, probably suggests that the Gymnasium failed to inspire Bessel. In January 1799, at the age of 14, he left school to become an apprentice to the commercial firm of Kulenkamp in Bremen. The firm was involved in the import-export business. At first Bessel received no salary from the firm but, as his accounting skills became appreciated by the firm, he received a small salary. Interest in the countries his firm dealt with led Bessel to spend his evenings studying geography, Spanish and English. His interests turned towards navigation and he considered the problem of finding the position of a ship at sea. This in turn led him to study astronomy and mathematics and he began to make observations to determine longitude. In 1804 Bessel wrote a paper on Halley's comet, calculating the orbit using data from observations made by Harriot in 1607. He sent his results to Heinrich Olbers, the leading comet expert of his time, who recognised at once the quality of Bessel's work and Olbers gave Bessel the task of making further observations to carry his work further. The resulting paper, at the level required for a doctoral dissertation, was published on Olbers' recommendation. From that time on Bessel concentrated on astronomy, celestial mechanics and mathematics.

46. Friedrich Wilhelm Bessel FRIEDRICH wilhelm bessel. 1784 1846. nemecký matematik, fyzik a astronom.Jako dvacetiletý jen tak mimochodem vypocítal dráhu Halleyovy komety. http://vedci.wz.cz/Osobnosti/Bessel_F_W.htm

FRIEDRICH WILHELM BESSEL nìmecký matematik, fyzik a astronom Jako dvacetiletý jen tak mimochodem vypoèítal dráhu Halleyovy komety. Jako první pøijal chyby pøístrojù jako nutné zlo a odvodil postupy, jak redukovat pozorovací chyby. V roce 1838 zmìøil Bessell jako první na svìtì vzdálenost hvìzdy 61 Cygni, když urèil její trigonometrickou paralaxu, obnášející 0,3". Tak zjistil, že tato hvìzda je od nás vzdálena nìco pøes 3 parseky (11 svìtelných let), což byl tehdy vrcholný výkon astronomické techniky: Bessel mìøil polohu hvìzdy v dalekohledu pomocí vláknového mikrometru oèima, nebo ještì neexistovala astronomická fotografie. O dva roky pozdìji Bessell definoval poslání svého oboru tak, že úkolem astronomie je nalézt zákony pohybu každého nebeského tìlesa a z nich odvodit jeho polohu pro každý pøíští okamžik. ZPÌT

47. Friedrich Wilhelm Bessel Store Friedrich wilhelm bessel Listing of 1 Friedrich wilhelm bessel items availablefor purchase at our online store. Friedrich wilhelm bessel Store http://www.mathbook.com/bio/b/Friedrich_Wilhelm_Bessel/

For Age: 4 years and up LeapPad by LeapFrog At Amazon on 4-15-2003. More Info This talking book comes with an interactive ''magic pen'' that works like a hand-held computer mouse pointer. Children can opt to turn the paper pages and listen to the story read with different voices for each character. Or they can interrupt the read-aloud session to play with the magic pen (permanently attached with a wire). They can point the pen tip to any word on a page and hear it pronounced, or touch a picture and hear a sound effect (such as ''Strike one!'' for the baseball bat). Very similar to the popular Living Books computer games, this 10-by-11-inch book is more portable than a home computer. Stories in this set include Lil's Loose Tooth, Richard Scarry's Best Word Book Ever, and Winnie the Pooh in A Sweet Good Morning. The set also includes a paper piano keyboard and map and human anatomy games. Gail Hudson Batteries: 4 AA batteries required. Sir Cumference and the Great Knight of Angleland: A Math Adventure by Cindy Neuschwander, Wayne Geehan (Illustrator) (Paperback - April 2001) Visit Our Sites: Buy Law Books Top Quality Wrist Watches

48. Friedrich Wilhelm BESSEL Translate this page Friedrich wilhelm bessel. (1784 - 1846). Nació el 22 de julio de 1784en Minden, Westphalia (ahora Alemania). Desde joven y durante http://centros5.pntic.mec.es/ies.salvador.dali1/primeroa/aristarco/friedric Bess

Friedrich Wilhelm BESSEL Nació el 22 de julio de 1784 en Minden, Westphalia (ahora Alemania). Desde joven y durante su trabajo en Bremen comenzó a interesarse por la geografía y navegación considerando el problema de la ubicación de los barcos en el mar. Estos interrogantes lo llevaron a estudiar astronomía, matemáticas y ha comenzar a realizar observaciones para determinar la longitud. En 1804 Bessel escribió un trabajo sobre el cálculo de la órbita del cometa Halley y lo envió a Heinrich Olbers, quien en ese momento era la persona mas experta en cometas, este trabajo impresionó a Olbers quien lo publicó y recomendó a Bessel convertirse en astrónomo profesional. En 1806 comenzó a trabajar en el observatorio Lilienthal cerca a Bremen. En este sitio adquirió gran experiencia en la observación planetaria especialmente de Saturno, sus anillos y satélites. En 1809, a la edad de 26 años se posesionó como director del Nuevo Observatorio Königsberg de Prusia y como profesor de astronomía. Previamente había recibido el doctorado en astronomía de la universidad de Göttingen por recomendación de Gauss.

49. New Catholic Dictionary: Bessel, Friedrich Wilhelm bessel, Friedrich wilhelm. (17841846) Astronomer. First to successfullymeasure stellar parallax when he measured 61 Cygni, founded http://www.catholic-forum.com/saints/ncd01142.htm

Bessel, Friedrich Wilhelm Astronomer . First to successfully measure stellar parallax when he measured 61 Cygni, founded a system of reduction, improved the use of the heliometer, and was director of the Observatory at Konigsberg. New Catholic Dictionary NCD Index Page Catholic Community Forum Contact Author Message Board

50. Friedrich Bessel - Wikipedia, The Free Encyclopedia Friedrich bessel. Friedrich wilhelm bessel (July 22, 1784 March 17, 1846) wasa German mathematician, astronomer, and discoverer of the bessel functions. http://www.phatnav.com/wiki/wiki.phtml?title=Friedrich_Bessel

51. Bessel - Friedrich Wilhelm Bessel (1784-1846) name. Home Math History People bessel Friedrich wilhelm bessel(1784-1846). bessel - Friedrich wilhelm bessel (1784-1846). http://www.spacetransportation.org/Detailed/71430.html

Catalogued stars, predicted a planet beyond Uranus as well as the existence of dark stars, investigated Johann Kepler's problem of heliocentricity, and systematized the mathematical functions involved, which now bear his name. Home Math History People : Bessel - Friedrich Wilhelm Bessel (1784-1846) Bessel - Friedrich Wilhelm Bessel (1784-1846) Catalogued stars, predicted a planet beyond Uranus as well as the existence of dark stars, investigated Johann Kepler's problem of heliocentricity, and systematized the mathematical functions involved, which now bear his name. Visit this link Spacetransportation.org - Science Directory - Last Update: Sun May 23 2004

52. About "Bessel, Friedrich Wilhelm (Funk & Wagnalls Multimedia Encyclopedia)" bessel, Friedrich wilhelm (Funk Wagnalls Multimedia Encyclopedia). http://mathforum.org/library/view/11957.html

Library Home Full Table of Contents Suggest a Link Library Help Visit this site: Author: Lycos Zone: Mathematics Description: A short biography of Friedrich Wilhelm Bessel (1784-1846), the German astronomer and mathematician, best known for making the first accurate measurement of the distance to a star. Levels: High School (9-12) College Languages: English Resource Types: Articles Dictionaries, Glossaries, Thesauri Math Topics: Measurement History and Biography Astronomy Home ... Contact Us http://mathforum.org/

53. Bessel Translate this page Friedrich wilhelm bessel. Der Astronom Friedrich wilhelm bessel. (nacheinem Text von F. Schmeidler zu bessels 200. Geburtstag am 22. http://homepages.compuserve.de/thweidenfeller/mathematiker/bessel.html

Friedrich Wilhelm Bessel Der Astronom Friedrich Wilhelm Bessel (nach einem Text von F. Schmeidler zu Bessels 200. Geburtstag am 22. Juli 1984), erschienen in den Nachrichten der Olbers-Gesellschaft Nr. 130, 7/84 Bessels Jugend Bessel trifft Olbers in Bremen Bessel in Lilienthal Bessel in Königsberg ... Bessels Tod Das Jubiläum des 200. Geburtstags des Astronomen Friedrich Wilhelm Bessel ist ein geeigneter Anlaß, an die großen Verdienste dieses Mannes zu erinnern, der einer der bedeutendsten Astronomen des 19. Jahrhunderts gewesen ist. Er wurde am 22. Juli 1784 in Minden in Westfalen geboren; noch in jungen Jahren wurde er als Professor der Astronomie und Direktor der Sternwarte nach Königsberg berufen und hat dort die epochemachenden astronomischen Arbeiten verfaßt, die ihn mit Recht weltberühmt gemacht haben. Bessels Jugend Als Sohn eines Beamten geboren, besuchte er einige Jahre das Gymnasium seiner Heimatstadt; aber er fand keinen Gefallen an der lateinischen Sprache, und da ihm die praktischen Probleme des Lebens interessanter erschienen, bat er seinen Vater, Kaufmannslehrling werden zu dürfen. Zwanzig Jahre später sollte es sich ergeben, daß derselbe Bessel eines seiner bedeutendsten wissenschaftlichen Werke in lateinischer Sprache verfaßte, an der er inzwischen Interesse gefunden hatte. Der Wunsch des l4jährigen, eine kaufmännische Lehre anzutreten, wurde damals erfüllt; sieben Jahre lang ist Bessel in dem Bremer Handelshaus Kulenkamp tätig gewesen.

54. FRIEDRICH WILHELM BESSEL - Meaning And Definition Of The Word Medical Dictionary. Search Dictionary FRIEDRICH wilhelm bessel DictionaryEntry and Meaning. WordNet Dictionary. Definition n German http://www.hyperdictionary.com/dictionary/friedrich wilhelm bessel

English Dictionary Computer Dictionary Thesaurus Dream Dictionary ... Medical Dictionary Search Dictionary: FRIEDRICH WILHELM BESSEL: Dictionary Entry and Meaning WordNet Dictionary Definition: [n] German mathematician and astronomer ... planet Synonyms: Bessel See Also: astronomer mathematician stargazer uranologist ... ABOUT HYPERDICTIONARY

55. Gaster's AstroSWAMP - Friedrich Wilhelm Bessel Spät na hlavnú stránku Tlac Friedrich wilhelm bessel. 22.7.1784 17.3.1846.FW bessel sa nardoril vo Westfálsku ako syn chudobného vládneho pracovníka. http://proton.science.upjs.sk/~gaster/bessel.htm

Spä na hlavnú stránku Tlaè Friedrich Wilhelm Bessel F. W. Bessel sa nardoril vo Westfálsku ako syn chudobného vládneho pracovníka. Popri zamestnaní študoval jazyky, geografiu, princípy navigácie a neskôr astronómiu a matematiku. Pracujúc po nociach napísal v roku 1804 èlánok o Halleyho kométe, kde zostavil model jej dráhy pod¾a dávnejších meraní. Èlánok poslal astronómovi Wilhelmovi Olbersovi a ten ho umiestnil do svojej novej knihy Monatliche Correspondenz a poprosil Bessela o spoluprácu s observatóriom v Lilenthale. Bessel sa musel rozhodnú medzi úspešnou firmou a prácou na observatóriu. Nakoniec sa vybral do Lilenthalu. Štyri roky na to ho pruská vláda poverila stavbou prvej nemecej hvezdárne v Konigsbergu. V roku 1810 sa stal profesorom atronómie na Univerzite v Konigsbergu a roku 1813 sa stal riadite¾om hvezdárne, vo funkcii ktorého zotrval až do svojej smrti. V rokoch 1831-32 vykonával merania vo Východnom Prusku, pod¾a ktorých stanovil hodnotu èíselnej excentricity Zeme na 1/299 a pod¾a toho vypracoval dovtedy najpresnejší model zemského povrchu - Besselov sféroid, ktorý sa používal viac ako 100 rokov. Pracoval aj v oblasti astrometrie, opierajúc sa o prácu Jamesa Bradleyho zmeral presne polohy 63000 hviezd. Roku 1838 ako prvý zmeral trigonometrickú paralaxu a tým aj vzdialenos hviezdy 61 Cygni, ktorú odhadol na 10.3 svetelného roka. Roku 1844 predpovedal existenciu nevidite¾ných sprievodcov Síria a Prokyóna na základe nepravidelností v ich vlastnom pohybe. Obe boli neskôr identifikované ako bieli trpaslíci. Ako prvému sa podarilo úspešne využi heliometer, prístroj na meranie zdanlivého priemeru Slnka. Nemali by sme ani zabudnú na jehp úlohu pri objave planéty Neptún, keï v roku 1840 poukázal na drobné nepravidelnosti v pohybe Uránu, dávajúc ich za vinu existencii ïalšej planéty.

56. WFS History In May of the same year the astronomer and mathematician Friedrich wilhelm bessel(17841846), who was born in Minden and called from Koenigsberg, occupied http://www.be.schule.de/schulen/wfs/pages/hist/WFS-History.html

A brief History of Astronomy in Berlin and the Wilhelm-Foerster-Observatory Gottfried Wilhelm Leibniz (1646-1716) arranged with the support of electoress Sophie Charlotte the establishment of a scientific foundation in Berlin/Brandenburg in the year 1700 AD, the "Societaet der Wissenschaften", of which he became the first president. The first astronomer of the foundation became Gottfried Kirch (1639-1710) who did his observations at the private observatory of the privy councillor von Kroseck (see above). Kirch got help from his son Christfried and his wife Maria Margareta (1670-1720), who discovered the Comet of 1702. The building of the private observatory remained until 1905 within the former Berlin district Neu Coelln. Then it was removed in favor for an office building. Under management of the society of sciences at the beginning 18th century the (old) Berlin Observatory was build within the Dorotheen municipal in the Marstall (the royal stable, see above). At January the 15th, 1711 the first meeting of the society took place within the five floor tower at the Letzte Str. (since 1822 Dorotheenstr., 1949-1995 Clara-Zetkin-Str., then Dorotheenstr. again). The society was replaced 1744 by the "Preussische Akademie der Wissenschaften", the prussian academy of sciences, founded by Friedrich II., called Friedrich The Great or The Old Fritz. The astronomical institute relating to the observatory was financed totally by the proceeds of the monopoly for calendar calculation until 1811. In this period among others Johann Bernoulli III. (1744-1807 astronomer and mathematician)

57. GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Bücher Antiquariat Günstig Ge Translate this page Bücher von GAUSS, CARL FRIEDRICH - FRIEDRICH wilhelm bessel günstigkaufen. Antiquarische Bücher von GAUSS, CARL FRIEDRICH - FRIEDRICH http://www.gebraucht-buch-versand.de/2_ALTONAREPR_1.htm

Bücher von GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL günstig kaufen Antiquarische Bücher von GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL gebraucht kaufen Antiquariat GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Buch Gebraucht GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Shop GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Buchversand GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Bücher Verlag GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Antiquarische Literatur GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Online Buchhandel GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Verkauf Buch De GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Buch Online GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Buch Bestellen GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Buch Verlag GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Seiten Buchtitel Briefwechsel Briefwechsel Herausgegeben von C.A.F. Peters. 6 Bde. in 3 Baenden Antiquariat GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Buch Gebraucht GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Shop GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Buchversand GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Bücher Verlag GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Antiquarische Literatur GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Online Buchhandel GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Verkauf Buch De GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Buch Online GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Buch Bestellen GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL Buch Verlag GAUSS, CARL FRIEDRICH - FRIEDRICH WILHELM BESSEL

58. Friedrich Wilhelm Bessel http://www.vialattea.net/eratostene/tempesti/bessel.html

Friedrich Wilhelm Bessel (1784-1846) Friedrich Wilhelm Bessel era un astronomo e matematico tedesco. E' ricordato soprattutto per la prima accurata misurazione della distanza di una stella. Nato a Minden, Bessel sopraintese la costruzione dell'Osservatorio di Königsberg di cui fu direttore dal 1813 fino alla sua morte. Tra il 1821 e il 1833 determinò la posizione delle stelle fino alla nona magnitudine, contribuendo alla compilazione di un catalogo di 50.000 stelle. Bessel fu il primo nel riuscire a determinare la parallasse e quindi la distanza di una stella (61 Cygni). Lo spostamento apparente della stella osservata a distanza di sei mesi, cioè dopo che la Terra ha percorso metà della sua orbita, fornì anche la conferma definitiva che è la Terra a girare attorno al Sole. Egli determinò il diametro, il peso e l'ellitticità della Terra (cioè la deviazione dalla forma sferica) e il suo nome è noto anche per una funzione matematica che trova numerosi impieghi in vari campi della fisica.

59. Homepage Von W. Volk / Stamp Collection Translate this page Friedrich wilhelm bessel. Briefmarke von 1984 / stamp from 1984, Geburtstagsdes Mathematikers Friedrich wilhelm bessel (1784 - 1846). http://www.w-volk.de/museum/stamps.htm

Briefmarken, die sich auf Mathematiker oder Mathematik beziehen / Stamps refering on mathematicians or mathematics Die Anmerkungen zu den einzelnen Briefmarken sind unter Verwendung der Angaben im Michel wolfgang.volk@berlin.de Erfurt Abbildungen von Mathematikern auf Briefmarken (nur auf englisch) verwiesen sein. Below stamps are shown approximately in original size which show mathematicians or are related to mathematics in some way. Clicking on an image of such a stamp a new browser window will be opened showing the stamp linearly magnified by factor 4. (Because your browser actually does not support JavaScript, the size of the new window cannot be related to the size of the graphics.) The remarks to the stamps also makes use of information provided by the Michel -catalogue (1989, ISBN 387858 821 6). This is the reason why below J. Kepler is indicated to be only an astronomer and G. W. Leibniz is indicated to be only a philosopher in one case. Further contributions to this stamp collection are welcome. For this reason, please, scan such stamps with a resolution of 600 dpi, store it in a format without loss of information (formats bmp or pcx) and send it per mail to the author ( wolfgang.volk@berlin.de

60. Homepage Von W. Volk / Friedrich Wilhelm Bessel Translate this page Stamp on Friedrich wilhelm bessel http://www.w-volk.de/museum/stamps/bessel01.htm

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