1. Bessel, Friedrich Wilhelm 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. http://www.astro.uni-bonn.de/~pbrosche/persons/pers_bessel.html

History of Astronomy Persons Persons (B) Deutsche Fassung Bessel, Friedrich Wilhelm Born: 22 July 1784, Minden, Westphalia, Germany Died: Astronomer, geodesist, mathematician External documents Biographies, bibliographies and references Short biography and references (Encycl. Brit.) Short biography and references (MacTutor Hist. Math.) Short biography and references (in German) Short biography (Eric Weisstein's Treasure Trove) Short biography (in German) Very short biography and references Very short biography Very short biography (in German) Bessel mentioned. Library of Congress entries (1) Library of Congress entries (2) Library of Congress entries (3) Library of Congress entries (4) ... Astrophysics Data System entries Namings Bessel['s] functions (Library of Congress entries) Further links Find more about Bessel with Alta Vista Wolfgang R. Dick . Created: 28 Jan 1998. Latest update: 20 Feb 2002

2. Bessel, Friedrich bessel, Friedrich wilhelm. Born 22 July 1784, Minden, Westphalia, Germany http://euler.ciens.ucv.ve/matematicos/bessel.html

Bessel, Friedrich Friedrich Wilhelm Bessel, nacido el 22 de julio de 1784, muerto en 1846, un astrónomo y matemático alemán, mejor conocido por determinar el método estelar PARALLAX , el primer método exacto de medir distancias estelares. Bessel tenía una pequeña instrucción formal pero cuando, a la edad de 26, se le asignó el puesto de director del Observatorio Prusiano Guillermo Frederick III, se le concedió el título de doctor por la Universidad de Gottingen. Bessel se estableció en Konigsberg por el resto de su vida, y fue allí donde con su programa astronómico de determinación de posición y movimiento estelar, le llevó a descubrir (1838) la parallax de Cygni 61. Bessel también resolvió un método de análisis matemático que envuelve lo que hoy se conoce como la función de Bessel, una indispensable herramienta en la Física e ingeniería. Autor: Alexander Velásquez. Bibliografía: Ley, Willy, Watchers de los Cielos (1963); MacPhearson, Hector, Fabricantes de Astronomía (1933); Pannekoek, Antonie, Una Historia de Astronomía (1961). Homepage de la Escuela e-mail: webmaster@euler.ciens.ucv.ve

3. Stiftung | Stipendium | Stipendien | Wissenschaft | Forschung - Alexander Von Hu für Bildung und Forschung gestiftete Friedrich wilhelm besselForschungspreise. Mit diesen Preisen werden junge http://www.avh.de/de/programme/preise/bessel.htm

Friedrich Wilhelm Bessel-Forschungspreise Merkblatt Nominierung English Suche

4. Fauth Friedrich wilhelm bessel, Juli 1784 zu Minden bei Hannover geboren, kam eher auf Umwegen zur Astronomie. Er verließ als fast 15 jähriger die Schule, um in einem Bremer Handelskontor eine Kaufmannslehre zu beginnen. 4 3 LJ Entfernung nächsten Fixstern der Erde. Friedrich wilhelm bessel hatte damit nicht nur das Werk von F. W. Herschel http://home.t-online.de/home/m.holl/bessel.htm

Friedrich Wilhelm Bessel

5. Bessel Friedrich wilhelm bessel. Born 22 July 1784 wilhelm bessel's fatherwas a civil servant in Minden. bessel attended the Gymnasium http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Bessel.html

Friedrich Wilhelm Bessel Born: 22 July 1784 in Minden, Westphalia (now Germany) Died: Click the picture above to see four larger pictures Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index 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

6. Bessel Biography of wilhelm bessel (17841846) wilhelm bessel's father was a civil servant in Minden. bessel attended the Gymnasium in Minden for four years but he http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Bessel.html

Friedrich Wilhelm Bessel Born: 22 July 1784 in Minden, Westphalia (now Germany) Died: Click the picture above to see four larger pictures Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index 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

7. References For Bessel References for wilhelm bessel. Biography in Dictionary 1902). R Engelman,Abhandlungen von Friedrich wilhelm bessel (Leipzig, 1875). J Fauvel http://www-gap.dcs.st-and.ac.uk/~history/References/Bessel.html

References for Wilhelm Bessel Biography in Dictionary of Scientific Biography (New York 1970-1990). Biography in Encyclopaedia Britannica. Books: A M Clerke, A Popular History of Astronomy During the Nineteenth Century R Engelman, Abhandlungen von Friedrich Wilhelm Bessel (Leipzig, 1875). J Fauvel, R Flood and R Wilson, (Oxford, 1993). J Hamel, Friedrich Wilhelm Bessel (Leipzig, 1984). K Lawrynowicz, Friedrich Wilhelm Bessel, 1784-1846 (Basel, 1995). F Klein, Development of mathematics in the 19th century (Brookline, Mass., 1979). H S Williams, The Great Astronomers Articles: W Fricke, Friedrich Wilhelm Bessel (1784-1846), Astrophys. and Space Sci. M Galuzzi, Trigonometric interpolation in Gauss, Bessel and Cauchy (Italian), Writings in honor of Giovanni Melzi, Sci. Mat. (Milan, 1994), 173-212. A A Izotov, Bessel's contribution to the development of higher geodesy (Russian), Istor.-Astronom. Issled. Z Kopal, Friedrich Wilhelm Bessel - an appreciation, Astrophys. and Space Sci. K K Lavrinovich, Friedrich Wilhelm Bessel (1784-1846) : On the 200th anniversary of his birth (Russian), Istor.-Astronom. Issled.

8. Bessel, Friedrich Wilhelm Translate this page English Flag English Version (with much more links!). bessel, FriedrichWilhelm. Geb. 22. Juli 1784, Minden, Westfalen, Deutschland Gest. 17. http://www.astro.uni-bonn.de/~pbrosche/persons/pers_bessel-d.html

Geschichte der Astronomie Personen Personen (B) English Version (with much more links!) Bessel, Friedrich Wilhelm Geb.: 22. Juli 1784, Minden, Westfalen, Deutschland Gest.: Externe deutschsprachige Dokumente Biographien, Bibliographien and Literaturhinweise Kurzbiographie und Literaturhinweise Kurzbiographie Weitere Verweise (Suche mit Alta Vista) Wolfgang R. Dick

9. RZ-MIT 12/1996 Zum Todestag Von Friedrich Wilhelm Bessel Ebenso war Friedrich wilhelm bessel (17841846). nicht nur einer der bedeutendsten Astronomen, sondern http://www.hu-berlin.de/rz/rzmit/rzm12/22.pdf

10. Poster Of Bessel wilhelm bessel. lived from 1784 to 1846. bessel determined the positions and proper motions of stars and discoveredthe http://www-history.mcs.st-and.ac.uk/~history/Posters2/Bessel.html

Wilhelm Bessel lived from 1784 to 1846 Bessel determined the positions and proper motions of stars and discoveredthe parallax of 61 Cygni. He also used a method of mathematical analysis involving what is now known as the Bessel function. Find out more at http://www-history.mcs.st-andrews.ac.uk/history/ Mathematicians/Bessel.html

11. VEDA 12.7. MATEMATIKOVÉ V HISTORII Friedrich wilhelm bessel Jirí Svršek narozen22. Friedrich wilhelm bessel byl také významným matematikem. http://pes.eunet.cz/veda/clanky/13818_0_0_0.html

NEVIDITELNÝ PES EUROPE'S ZVÍØETNÍK BYDLENÍ ... ENCYKLOPEDIE Ètvrtek 12.7.2001 Svátek má Boøek Biologie a pøíroda Vesmír Fyzika Medicína ... Archiv vydání Nadpis Autor Text èlánku Alena Marešová Neviditelný pes již pøed èasem uveøejnil dotazník paní doktorky Marešové z Institutu pro kriminologii a sociální prevenci v Praze, týkající se extremismu. Nyní vás znovu prosí o pomoc. Institut pro kriminologii a sociální prevenci se t.è. zabývá trestnou èinností policistù - jejími pøíèinami, nezbytnými podmínkami její existence a možnostmi její redukce. Dílèím úkolem je zjištìní, jak v souèasnosti policii a policisty vnímá veøejnost a odborná veøejnost. Ze zkušených pracovníkù justice a policie byl vytvoøen soubor expertù, jejichž názory budou zpracovány a interpretovány zvl᚝ .Vzhledem k vynikajícím zkušenostem ze sbìru názorù prostøednictvím dotazníkù pøedložených internetové èásti veøejnosti, také v tomto pøípadì jsem zpracovala krátký dotazník a prosím uživatele internetu o jeho vyplnìní. Pro zájemce uvádím program 43. semináøe Spoleènosti pro talent a nadání - ECHA:

12. Friedrich Wilhelm Bessel Translate this page . Friedrich wilhelm bessel. Friedrich wilhelm bessel war einer der großen Astronomendes 19. Friedrich wilhelm war der zweite Sohn der Familie bessel. http://home.t-online.de/home/guenther.mueller.bonn/bessel.htm

Friedrich Wilhelm Bessel

13. Friedrich Wilhelm Bessel (1784-1846) Friedrich wilhelm bessel (July 22, 1784 March 17, 1846). wilhelm Friedrichwilhelm bessel, Begründer der Königsberger Sternwarte. Verlag http://www.seds.org/messier/xtra/Bios/bessel.html

Friedrich Wilhelm Bessel (July 22, 1784 - March 17, 1846) Wilhelm Bessel was born in Minden on July 22, 1784 as the son of Carl Friedrich Bessel, a government secretary, and his wife Friederike Ernestine (b. Schrader), daughter of a pastor from Rehme, as one of 9 children (3 sons, 6 daughters); the family originated from the Calenberg village near Hannover. After getting school education in Minden, he went to Bremen in January 1799 at age 14, to work in import-export business for the Andreas Kuhlenkamp company, with a contract for a 7-year apprenticeship. During this time, besides his business activities, he trained himself the skills necessary to undertake naval overseas voyages: First geography, Spanish and English, then navigation, astronomy and mathematics; he took a course in navigation in 1801. Astronomy finally caught his interest. In 1804, he contacted Wilhelm Olbers (1758-1840) concerning a paper he had written on comet Halley, using data from observations made by Harriot in 1607. Olbers advised him to elaborate this work further, and it was finally published. On Olbers suggestion, Bessel accepted a post at Lilienthal Observatory, a private observatory near Bremen, owned by Johann Hieronymus Schroeter (1745-1816) in 1806. There he did observational work on comets and planets, in particular planet Saturn and its moons and the newly discovered asteroids Ceres, Juno and Vesta, studied atmospheric refraction, and started to re-investigate astrometric observations of Bradley (1692-1762).

14. Bessel's Comet Candidate Of November 9, 1808 24year old Friedrich wilhelm bessel was looking for the comet observed in March1808, that Olbers and he had calculated to have brightened again, to provide http://www.seds.org/~spider/spider/Misc/bessel_c1808.html

Bessel's Comet Candidate of November 9, 1808 24-year old Friedrich Wilhelm Bessel was looking for the comet observed in March 1808, that Olbers and he had calculated to have brightened again, to provide hope for a rediscovery in the evening sky. a ... 7th mag 64d 51' 33".5 58d 58' 58".6 b ... 9th mag 64 57 4 .7 58 53 46 Three other stars, which Bessel determined by own observation, were at c .. 10th mag 65d 0' 26".4 58d 48' 4".4 f .. 12th mag 65 10 3 .9 58 47 53 .7 g .. 12th mag 65 14 12 .9 58 46 59 .2 With these stars, from 7:15 to 7:40 (p.m.) when it became cloudy again, the nebula formed the following configuration: In the reversing telescope, it was placed almost in the prolongation of the line from a to b , but slightly right of it, and its separation from b was estimated at 2/3 of a b ; a straight line through g f hit it in a distance of f g f ; a very fine starlet e , which was situated right of c and f and formed an equi-lateral triangle, can be used to determine the nebula more acurately, as it was situated on the straight line c e , little more than 2/3 c e from c . The position following from these estimates is = 65d 4' RA and 58d 50' Decl. On November 10 it was hazy; only on the 11th, at very serene sky, the nebula was no more visible in the place it had been on the 9th; instead, something nebulous occurred in 64d 21' [RA] and 58d 42' Decl., which however appeared more starlike on the 12th. Neither on the 12th nor on the 13th anything could be detected with certainty, which could have been taken for the comet.

15. Friedrich Wilhelm Bessel Translate this page Olbers, Friedrich wilhelm bessel 1784 - 1846, Hauptseite/Main Page.Deutsch, English. Friedrich wilhelm bessel, bessel. Provinz http://www.niester.de/p_natwis/bessel/bessel.html

Friedrich Wilhelm Bessel Hauptseite/Main Page Deutsch English Friedrich Wilhelm Bessel Bessel Bessel, Friedrich fwb-home ... Friedrich Wilhelm Bessel Erstellt am:

16. Heinrich Wilhelm Matthias Olbers wilhelm bessel, Heinrichwilhelm Matthias Olbers 1758 - 1840, Hauptseite/Main Page. Deutsch, English. http://www.niester.de/p_natwis/olbers/olbers.html

Warum ist es nachts dunkel? Why is the Sky dark at nicht? Heinrich Wilhelm Matthias Olbers Hauptseite/Main Page Deutsch English Heinrich Wilhelm Matthias Olbers (1758-1840) Erstellt am:

17. Friedrich Bessel Translate this page Gästebuch. Was ist neu? Über mich. Statistik Website. Links. Suche. BesselFriedrich wilhelm (1784 - 1846, Königsberg). ©1997-2003, www.mathematik.ch. http://www.mathematik.ch/mathematiker/bessel.php

Home Geschichte Mathematiker Zitate ... Suche Bessel Friedrich Wilhelm (1784 - 1846, Königsberg) ©1997-2003, www.mathematik.ch

18. FRIEDRICH WILHELM BESSEL Translate this page Gagnez de l'argent en jouant gratuitement sur Prizee ! FRIEDRICHWILHELM bessel. 1784-1846. Fils d'un fonctionnaire de Minden et d http://www.cafe.rapidus.net/sbelange/bessel.html

Gagnez de l'argent en jouant gratuitement sur Prizee ! FRIEDRICH WILHELM BESSEL

19. Provinz-Ostpreußen : Bessel, Friedrich Wilhelm Translate this page Ostpreußen - berühmte Namen. bessel, Friedrich wilhelm. geb. 22.07.1784in Minden, gest. 17.03.1846 in Königsberg. Astronom und Mathematiker. http://www.provinz-ostpreussen.de/ostpreussen/ospers_bessel.html

Bessel, Friedrich Wilhelm Astronom und Mathematiker zum Seitenanfang Samstag, 5. Januar 2002

20. Friedrich Wilhelm Bessel Friedrich wilhelm bessel 17841846 wilhelm bessel attended the Gymnasiumin Minden for 4 years but he did not appear to be very http://www.stetson.edu/~efriedma/periodictable/html/Bk.html

Friedrich Wilhelm Bessel Wilhelm Bessel attended the Gymnasium in Minden for 4 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. At the age of 14, he left school to become an import-export apprentice in Bremen. 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. Bessel's work had now become known internationally, and he was honored with the award of the Lalande Prize from the Institut de France for his tables of refraction based on Bradley's observations. He used Bradley's data to give a reference system for the positions of stars and planets and also to determine the positions of stars. He had to deduce errors in Bradley's instruments and errors caused by refraction. He had to reduce the positions to one fixed date and eliminate the effects of the Earth's motion, the precession of the Earth and other effects. Bessel's work in determining the constants of precession, nutation and aberration won him many honors. in 1812, he was elected to the Berlin Academy, and won a prize from the Berlin Academy in 1815. In 1825 he was honoured by election as a Fellow of the Royal Society.

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