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         Bessel Wilhelm:     more books (47)
  1. Hochschullehrer (Albertina Königsberg): Immanuel Kant, Konrad Lorenz, David Hilbert, Friedrich Wilhelm Bessel, Carl Gustav Jacob Jacobi (German Edition)
  2. Abhandlungen Von Friedrich Wilhelm Bessel: Bd. Iii. Theorie Der Instrumente. Iv. Stellar-Astronomie. V. Mathematik. 1876 (German Edition) by Friedrich Wilhelm Bessel, 2010-02-09
  3. Recensionen Von Friedrich Wilhelm Bessel (1878) (German Edition) by Friedrich Wilhelm Bessel, 2009-04-02
  4. Friedrich Wilhelm Bessel. by Friedrich Wilhelm (1784-1846)] WATTENBERG, D. [BESSEL, 1934-01-01
  5. Astronom Des 19. Jahrhunderts: Friedrich Wilhelm Bessel, George Biddell Airy, Arthur Auwers, Georg Carl Friedrich Kunowski (German Edition)
  6. Naissance à Kaliningrad: Christian Goldbach, Ehrenfried Günther Von Hünefeld, Gustav Kirchhoff, Gerhard Barkhorn, Friedrich Wilhelm Bessel (French Edition)
  7. Recensionen von Friedrich Wilhelm Bessel: Hrag. von Rudolph Engelmann (German Edition) by F. W. Bessel, 1878-01-01
  8. Person (Minden): Meister Bertram, Edelgard Bulmahn, Friedrich Wilhelm Bessel, Franz Boas, Liste der Persönlichkeiten der Stadt Minden (German Edition)
  9. A Brief Notice of the Life, Researches, and Discoveries of Friedrich Wilhelm Bessel. Offprint from: Annual Report of the Royal Astronomical Society. by Friedrich Wilhelm (1784-1846)] HERSCHEL, J.F.W. [BESSEL, 1847-01-01
  10. Recensionen Von Friedrich Wilhelm Bessel (1878) by Friedrich Wilhelm Bessel, 2010-09-10
  11. Recensionen Von Friedrich Wilhelm Bessel (1878) (German Edition) by Friedrich Wilhelm Bessel, 2010-09-10
  12. Astrometric Binaries: An International Conference to Commemorate the Birth of Friedrich Wilhelm Bessel (1784-1846)
  13. Briefwechsel Zwischen Gauss Und Bessel (German Edition) by Carl Friedrich Gauss, Friedrich Wilhelm Bessel, 2010-02-24
  14. Briefwechsel Zwischen W. Olbers Und F.W. Bessel: In Zwei Bänden (German Edition) by Friedrich Wilhelm Bessel, Adolph Erman, et all 2010-02-09

21. Friedrich Wilhelm Bessel
Translate this page Friedrich wilhelm bessel.
http://www.chemie.uni-bremen.de/stohrer/biograph/bessel.htm
Friedrich Wilhelm Bessel

22. Znani I Nieznani - Matematycy-Bessel Friedrich Wilhelm
bessel Friedrich wilhelm. Bezout Etienne. Buniakowski Wiktor. bessel Friedrich wilhelm(1784 – 1846) – astronom i matematyk niemiecki, sformulowal tzw.
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23. Friedrich Wilhelm Bessel
Translate this page Friedrich wilhelm bessel. bessel, Friedrich wilhelm (Minden, 1784-Königsberg,1846), astrónomo y matemático alemán. A través
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Friedrich Wilhelm Bessel Bessel, Friedrich Wilhelm (Minden, 1784-Königsberg, 1846), astrónomo y matemático alemán. A través de su interés por la navegación llegó a interesarse por la Astronomía de forma autodidacta. Construyó un sextante, con el que realizó observaciones, y remitió a Olbers sus resultados sobre la determinación de la órbita del cometa Halley de 1607; así consiguió plaza de inspector en un observatorio privado de Lilienthal. Más tarde, en 1810, se le confió la dirección del Observatorio de Königsberg, el cual supervisó su construcción. Se dedicó en principio a la determinación precisa de la Aberración, nutación, precesión, refracción e inclinación de la elíptica. En 1821 emprendió el estudio de las posiciones de las estrellas, en el que llegó a la 9.ª Magnitud elevando el número de estrellas catalogadas a 50.000. Sus observaciones con el heliómetro le condujeron al cálculo de la primera paralaje estelar, la de la estrella 61 Cygni (1829) proporcionando así la confirmación definitiva de la teoría por la que el Sol y no la Tierra es el centro del Sistema Solar. En su obra Astronomische Untersuchungen (Investigación astronómica) 1841-42, están contenidos la mayor parte de estos trabajos.

24. Bessel, Friedrich Wilhelm. The Columbia Encyclopedia, Sixth Edition. 2001
Edition. 2001. bessel, Friedrich wilhelm. (fr d´r kh v l´h lm b s´l) (KEY) , 1784–1846, German astronomer and mathematician. He
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25. Bessel, Friedrich Wilhelm. The American Heritage® Dictionary Of The English Lan
bessel, Friedrich wilhelm. The American Heritage® Dictionary of the English LanguageFourth Edition. 2000. bessel, Friedrich wilhelm. SYLLABICATION Bes·sel.
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26. Bessel, Friedrich Wilhelm (1784-1846)
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 bessel, Friedrich wilhelm (17841846)
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Bessel, Friedrich Wilhelm (1784-1846)
German astronomer and mathematician, assistant to Schröter at Lilienthal, who became Director of the Königsberg Observatory in 1810. Bessel was a superb observer and made many important contributions to positional astronomy, including, in 1838, the first direct measurement of a star's distance, that of 61 Cygni , by trigonometric parallax . He argued against the existence of life on the Moon at a time when several notable compatriots of his, including Gauss Gruithuisen Littrow , and Olbers , were in the pro-selenite camp. In particular, he noted the sharpness with which stars are occulted by the Moon, indicating the absence of a lunar atmosphere. In a lecture, delivered in 1838, he took the supporters of pluralism to task for ignoring the astronomical evidence that our neighboring worlds (with the possible exception of Mars) are not suited to life as we know it: The moon is decisively different from the earth in the primary point of an atmosphere; the sun is of an entirely different nature; for Mercury and Venus we have found no basis for assuming a similarity; Mars appears to possess an atmosphere and summer and winter, even snow and ice; . . . Jupiter and Saturn are very dissimilar to the earth in the matter of which they consist . . .
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27. FRIEDRICH WILHELM BESSEL
Translate this page FRIEDRICH wilhelm bessel. 1784-1846. Fils d'un fonctionnaire de Mindenet d'une mère , fille d'un pasteur de Rheme, bessel appartient
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FRIEDRICH WILHELM BESSEL
Ses principales contributions sont la construction d'appareils très précis pour le positionnement des étoiles et des planètes. Il effectue la première mesure d'une parallaxe stellaire. Il complète le catalogue de 75 000 étoiles jusqu'à la magnitude 9. Il raffine le calcul astronomique en créant de nouvelles méthodes appliquées au calcul de perturbation planétaire. On lui doit l'année-lumière comme unité de longueur. Ses tout derniers travaux ont trait à l'orbite de Neptune; il démontre que son orbite irrégulière ne peut être due uniquement à Jupiter, Saturne et Uranus et qu'il se pourrait qu'il y ait une autre planète. Pluton ne sera découverte qu'en 1930. À partir de 1840, sa santé se détériore. Après deux ans de souffrance, il meurt d'un cancer, non sans avoir eu la peine de voir mourir ses deux fils.

28. About "Bessel, Friedrich Wilhelm (Funk & Wagnalls Multimedia Encyclopedia)"
bessel, Friedrich wilhelm (Funk Wagnalls Multimedia Encyclopedia). LibraryHome Full Table of Contents Suggest a Link Library Help
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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
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29. Bessel, Friedrich Wilhelm
bessel, Friedrich wilhelm, frEd'rikh vil'helm bes'ul Pronunciation Key. bessel,Friedrich wilhelm , 1784–1846, German astronomer and mathematician.
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Newsletter You've got info! Help Site Map Visit related sites from: Family Education Network 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 Bessarion Bessemer Search Infoplease Info search tips Search Biographies Bio search tips About Us Contact Us Link to Infoplease ... Privacy

30. Untitled
Translate this page bessel, Friedrich wilhelm, * 1784 in Minden, † 1846 in Königsberg. 7,1826. Literatur. Dehnen, Max Friedrich wilhelm bessel. Leer, 1961.
http://www.tu-bs.de/institute/geophysik/geschichte/besselb.htm
Bessel, Friedrich Wilhelm,
Schriften Abhandlungen, hrsg. von Rudolf Engelmann, 3 Bde., Leipzig, 1875/76.
Literatur Dehnen, Max: Friedrich Wilhelm Bessel. Leer, 1961. Repsold, J. A.: F. W. Bessel, Astron. Nachrichten, 210, 161-214, 1920.

31. Bessel, Friedrich Wilhelm
bessel, Friedrich wilhelm 17841846, German astronomer and mathematician. bessel,Friedrich wilhelm. 1784-1846, German astronomer and mathematician.
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    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 (1841-42). Bessel also introduced a class of mathematical functions, named for him, which he established as a result of work on perturbation of the planets and which are widely used in applied mathematics, physics, and engineering.
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  • 32. Argelander, Friedrich Wilhelm August
    Argelander, Friedrich wilhelm August 17991875, German astronomer. and continuedthere the work of determining the positions of stars that FW bessel had begun
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    Argelander, Friedrich Wilhelm August 1799-1875, German astronomer. He became director of the observatory at the Univ. of Bonn in 1837 and continued there the work of determining the positions of stars that F. W. Bessel Bonner Durchmusterung (1862), which records the positions and brightness of more than 324,000 stars (up to the ninth magnitude) in the northern heavens.
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  • 33. Www.iper1.com - Friedrich Wilhelm Bessel
    Cerca la rima. Friedrich wilhelm bessel. Friedrich wilhelm bessel GustavCassel Odd Hassel Kassel Albrecht Kossel Albert Roussel Raymond
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    34. Friedrich Wilhelm Bessel 1784 - 1846 Best And Books And Buy
    Friedrich wilhelm bessel 1784 1846 by KK Lavrinovich; Friedrich wilhelm Goldenbogene Leben fuer d Oberberg Kreis hrsg anlaessl d Verabschiedung von Friedrich
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    35. Bessel, Franz Friedrich Wilhelm - Gedächtnis Berlin
    Translate this page bessel, Franz Friedrich wilhelm. * 22.07.1784 Minden (Brandenburg-Preußen).† 17.03.1846 Königsberg (Provinz Preußen). Astronom. Straße
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    Bessel , Franz Friedrich Wilhelm Astronom www.berlin-geschichte.de hib@luise-berlin.de

    36. WIEM: Bessel Friedrich Wilhelm
    (encyklopedia.pl)Category World Polska Leksykon Encyklopedia encyklopedia.pl B......bessel Friedrich wilhelm (17841846), astronom i matematyk niemiecki, profesoruniwersytetu w Królewcu, zalozyciel i dyrektor tamtejszego
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    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. Odwied¼ w Internecie Astronomia Powi±zania Obserwatorium astronomiczne Elipsoida ziemska Masa £abêd¼ ... do góry Encyklopedia zosta³a opracowana na podstawie Popularnej Encyklopedii Powszechnej Wydawnictwa Fogra

    37. Friedrich Wilhelm Bessel
    Translate this page Friedrich wilhelm bessel (1784-1846). Friedrich wilhelm bessel eraun astronomo e matematico tedesco. E' ricordato soprattutto per
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    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.

    38. L'ellissoide Di Bessel
    Translate this page è stato lasciato invariato, restando definito come la lunghezza delcampione conservato a Parigi (10). Friedrich wilhelm bessel.
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    L'ellissoide di Bessel
    Nel 1841 Federico Bessel (1784-1846), concludendo l'elaborazione di tutte le misure del grado effettuate fino ad allora, fissò l'ellissoide di rotazione terrestre dando i valori 6376,83 km per il semiasse maggiore e 6355,10 per quello minore (i valori attualmente adottati per l'ellissoide internazionale, o ellissoide di Hayford, sono rispettivamente 6378,388 e 6356,912 con una circonferenza meridiana di 40009,152 ed una circonferenza equatoriale di 40076,592 km). Nonostante le successive determinazioni della lunghezza della circonferenza terrestre, il valore del metro è stato lasciato invariato, restando definito come la lunghezza del campione conservato a Parigi

    Friedrich Wilhelm Bessel

    39. Bessel, Franz Friedrich Wilhelm
    Translate this page bessel, Franz Friedrich wilhelm. Archiv der Berlin- BrandenburgischenAkademie der Wissenschaften. bessel, Franz Friedrich wilhelm geb. 22.
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    Bessel, Franz Friedrich Wilhelm Archiv der Berlin-
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    Bessel, Franz Friedrich Wilhelm
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    40. Friedrich Wilhelm Bessel

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