61. February 16 February 16. © 1997, 1998 by Paul A. Schons. February 16, 1514. Birthof georg joachim rheticus in Feldkirch, Austria. rheticus was http://webcampus3.stthomas.edu/paschons/language_http/calendar/feb16.html

February 16 © 1997, 1998 by Paul A. Schons February 16, 1514 Birth of Georg Joachim Rheticus in Feldkirch, Austria. Rheticus was an astronomer and mathematician who was one of the first to accept the heliocentric theory of Copernicus. A professor at the University of Wittenberg, he went to Poland and studied with Copernicus in 1539-1540. He also did significant work on trigonometric functions. February 16, 1620 Birth of Friederich Wilhelm in Cölln, Germany. Friederich Wilhelm was the elector of Brandenburg in the Holy Roman Empire. A member of the Hohenzollern family, he rebuilt the family holdings after the devastation of the Thirty Years' War and established control over Prussia. He built a strong and efficient army and established a strong economic infrastructure in his territories. His son, Friedrich I, thus had a strong basis from which to start his rule. February 16, 1746 Birth of Wilhelm Heinse in Langewiesen, Germany. Heinse was a novelist and literary critic who wrote in the Sturm und Drang style. His novel, Ardinghello und die glückseligen Inseln (1787) is the most remembered of his works.

62. Www.cuis.edu/ftp/WITTENBERG/ASTROLOGY_LUTHER_MELANCHTON.-9709 georg joachim rheticus Andreas Osiander (who wrote the now famous preface to Copernicus'De revolutionibus, (1543)), both Lutherans, were instrumental in the http://www.cuis.edu/ftp/WITTENBERG/ASTROLOGY_LUTHER_MELANCHTON.-9709

================================================================================ Date: Fri, 05 Sep 1997 06:52:40 -0500 (CDT) From: "Walther Library Concordia Theo. Seminary" To: WITTENBERG Subj: Astrology, Luther/Melanchton (fwd) Date: Thu, 04 Sep 1997 17:05:53 +0000 From: "John M. Moe" To: Wittenberg List To: WITTENBERG To: WITTENBERG Subj: Re: Astrology, Luther/Melanchton (fwd) Date: Fri, 05 Sep 1997 22:09:20 -0600 From: Bill Powers To: "Walther Library Concordia Theo. Seminary" To: WITTENBERG Subj: Astrology, Luther/Melanchton (fwd) From: pella To: Marvin A. Huggins

63. Nicholas Copernicus Certain facts about Copernicus's early life are well established, although a biographywritten by his ardent disciple georg joachim rheticus (151474) is http://www.crystalinks.com/copernicus.html

Nicholas Copernicus Nicholas Copernicus - born Feb. 19, 1473, Torun, Pol. d. May 24, 1543, Frauenburg, East Prussia [now Frombork, Poland] His name in Polish was MIKOLAJ KOPERNIK. He was a Polish astronomer who proposed that the planets have the Sun as the fixed point to which their motions are to be referred; that the Earth is a planet which, besides orbiting the Sun annually, also turns once daily on its own axis; and that very slow, long-term changes in the direction of this axis account for the precession of the equinoxes. This representation of the heavens is usually called the heliocentric, or "Sun-centred," systemderived from the Greek helios, meaning "Sun." Copernicus's theory had important consequences for later thinkers of the scientific revolution, including such major figures as Galileo, Kepler, Descartes, and Newton. Copernicus probably hit upon his main idea sometime between 1508 and 1514, and during those years he wrote a manuscript usually called the Commentariolus ("Little Commentary"). However, the book that contains the final version of his theory, De revolutionibus orbium coelestium libri vi ("Six Books Concerning the Revolutions of the Heavenly Orbs"), did not appear in print until 1543, the year of his death. Early life and education  Certain facts about Copernicus's early life are well established, although a biography written by his ardent disciple Georg Joachim Rheticus (1514-74) is unfortunately lost. According to a later horoscope, Nicolaus Copernicus was born on February 19, 1473, in Torun, a city in north-central Poland on the Vistula River south of the major Baltic seaport of Gdansk. His father, Nicolaus, was a well-to-do merchant, and his mother, Barbara Watzenrode, also came from a leading merchant family. Nicolaus was the youngest of four children.

64. The Planet Mars: A History Of Observation And Discovery. Notes. University Of Ar 1. It was georg joachim rheticus, the pupil of Copernicus, according to Kepler,Astronomia Nova, in Johannes Kepler, Gesammelte Werke, 22 vols., ed. W. von http://www.uapress.arizona.edu/online.bks/mars/notes.htm

The Planet Mars: A History of Observation and Discovery William Sheehan Notes Chapter 1. Motions of Mars It was Georg Joachim Rheticus, the pupil of Copernicus, according to Kepler, Astronomia Nova, in Johannes Kepler, Gesammelte Werke, 22 vols., ed. W. von Dyck and Max Caspar (Munich: C. H. Beck, 1937), vol. 3, p. 8. Copernicus, "Commentariolus," in Three Copernican Treatises, 2d ed., trans. Edward Rosen (New York: Dover, 1959), pp. 7778. For biographical details about Tycho Brahe, see Victor E. Thoren, The Lord of Uraniborg: A Biography of Tycho Brahe (Cambridge: Cambridge University Press, 1990). Kepler, Astronomia Nova, cap. 7, in Gesammelte Werke, vol. 3, p. 108. On Kepler, the standard source is Max Caspar, Kepler, trans. C. Doris Hellman (1959; reprint, New York: Dover, 1993). Technical accounts of Kepler's calculations are in J. L. E. Dreyer, A History of Astronomy from Thales to Kepler (1906; reprint, New York: Dover, 1953); Antonie Pannekoek, A History of Astronomy (1961; reprint, New York: Dover, 1989); Alexandre Koyré, The Astronomical Revolution

65. Nicolaus Copernicus georg joachim rheticus (15141574), who joined Copernicus in Frombork in 1539 ashis first and only disciple, published in 1540 his Narratio Prima, a first http://www.hao.ucar.edu/public/education/sp/images/copernicus.html

Nicolaus Copernicus (1473-1543) Nicolaus Copernicus [Nikklas Koppernigk] (1473-1543). Born on 19 February 1473 in Torun, Poland. He first studied at Cracow from 1492 to 1494, then in 1496 was sent to Italy to study Canon Law at the University of Bologna. In 1501 he began medical studies at the University of Padua, and finally took his Law degree at the small University of Ferrara in 1503. In 1497, while still in Italy, he was made Canon of the Frombork [Frauenberg] cathedral by his maternal uncle and protector Lucas Watzenrode, bishop of Varmia. This provided Copernicus with a secure and relatively renumerative position which he held to the end of his life, allowing him the freedom to pursue his interest in astronomy. Copernicus' landmark work On the Revolutions De revolutionibus orbium coelestium ) was dedicated to Pope Paul III and published in 1543 in Nurenberg, as Copernicus lay on his deathbed. However, his heliocentric hypothesis had been circulating for over 30 years, starting with his Commentariolus , written between 1512 and 1515 and circulated in manuscript form. Georg Joachim Rheticus (1514-1574), who joined Copernicus in Frombork in 1539 as his first and only disciple, published in 1540 his

66. Copernicus' De Revolutionibus idea has been in circulation among astronomers for over 30 years, and a previewof the book's content, the Narratio Prima of georg joachim rheticus, had been http://www.hao.ucar.edu/public/education/sp/images/derevolutionibus.html

Copernicus' De Revolutionibus Title page of Copernicus' On the Revolutions De revolutionibus orbium coelestium ). The book was published in 1543 in Nuremberg as Copernicus lay on his deathbed, and was dedicated to Pope Paul III. The second edition was printed in Basel in 1566, and the third in Amsterdam in 1617. Copernicus's book did not create controversy in the years following its publication. Its main idea has been in circulation among astronomers for over 30 years, and a preview of the book's content, the Narratio Prima of Georg Joachim Rheticus, had been published in 1540. The Copernican planetary model was absorbed and commented upon in the contemporary technical astronomical literature, notably by Michael Maestlin and the leading Jesuit astronomer, Christoph Clavius . In 1551 Erasmus Rheinhold (1511-1553) published the Prutenic Tables of planetary positions, which were based on the Copernican model and enjoyed quite a bit of success. Religious authorities at first did not react to book's publication. This was likely due, at least in part, to the addition of an anonymous preface, written by the publication's overseer Andreas Osiander (1498-1552), to the effect that Copernicus' planetary model should be treated as an hypothesis to facilitate the computation of planetary positions. This situation was to change once Galileo began his so-called Copernican Crusade.

67. AMBIX Contents 1937-70: Book Reviews Smeaton. 15 209. BURMEISTER, KARL HEINZ georg joachim rheticus, 15141574eine Bio- Bibliographie (1961-68) W. Pagel. 17 62-63. BURNETT http://www.open.ac.uk/Arts/HST/SHAC/ambix/reviews37-70.htm

PART II BOOK REVIEWS Aspects de l'alchimie traditionelle (1953) G. Heym AMADOU, R. Raymond Lulle et l'alchimie (1953) G. Heym ARNOLD, GOTTFRIED (reprint, 1963) W. Pagel ASHMOLE, ELIAS Theatrum chemicum britannicum (reprint, 1967) D. Geoghegan AUNG, MAUNG HTIN Folk elements in Burmese Buddhism (I962) P. M. Rattansi BAKELANTS, Louis (1961) W. Pagel BARRETT, FRANCIS The lives of alchemystical philosophers (1955) D. Geoghegan BERGMAN, TORBERN Om Lyftsyra: Om Mineralvatten (reprint, 1956) D. Geoghegan A dissertation on elective attractions (reprint, ed. by A. M. Duncan, 1970) M. P. Crosland BERNUS, ALEXANDER VON Das Geheimnis der Adepten (1956) G. Heym (1960) H. J. Sheppard BERTHELOT, P. E. M. Collection des anciens alchimistes grecs (reprint, n.d.) W. Pagel See also a comment by J. R. Partington La chimie au moyen age (reprint, 1967) W. Pagel BLACK, ROBERT C. The younger John Winthrop (1966) R. S. Wilkinson BOAS, MARIE Robert Boyle and seventeenth-century chemistry (1958) D. Geoghegan Archives internationales d'histoire des sciences , no. 43, April-June 1958) anonymous

68. Early Protestant Hostility Towards Science Catholics. rheticus was barred from returning to his post at Wittenberg. 1536. . . His pupil and disciple georg joachim Rhaticus . . . http://ic.net/~erasmus/RAZ84.HTM

Early Protestant Hostility Towards Science Click the banner to learn more about and purchase this book and additional popular apologetics and theology titles by Dave Armstrong Will Durant, the noted (non-Catholic) historian, summarized: "Luther rejected the Copernican astronomy . . . Calvin had little use for science; Knox none." Luther vs. Copernicus Nicholas Copernicus (1473-1543), a devout Catholic (one of his degrees was in Church canon law), originated the heliocentric theory in astronomy, in which the earth revolves around the sun rather than vice versa. This new theory in particular provides fascinating insight into Protestantism's view of science, since it arrived roughly simultaneously with the Protestant Revolution. Thomas Kuhn, in his important book, The Copernican Revolution , notes Luther's reaction to Copernicus: People gave ear to an upstart astrologer who strove to show that the earth revolves, not the heavens or the firmament, the sun and the moon . . . This fool wishes to reverse the entire science of astronomy, but sacred Scripture tells us (Joshua l0:l3) that Joshua commanded the sun to stand still, and not the earth. Luther's Cohort Philip Melanchthon Rejects Copernicus, Accepts Astrology

69. Lunar Republic : Craters Rhaeticus or rheticus. 0.0N. 4.9E. 45. georg joachim von Lauchen of Rhaetia, or~ (15141574), Hungarian mystic, astronomer and mathematician. Rheita. 37.1S. 47.2E. http://www.lunarrepublic.com/gazetteer/crater_r.shtml

Craters (R) Craters A B C D ... Return To Gazetteer Index Latin Name Lat Long Diam Origin Rabbi Levi Levi ben Gerson (1288-1344), French-born Jewish philosopher, mathematician and astronomer; invented Jacob's Staff, an instrument to measure the angular distance between celestial objects. Racah Giulio ~ (1909-1965), Italian-Israeli physicist. Racine Jean-Baptiste ~ (1639-1699), French classical playwright. Raimond J. J. ~, Jr. (1903-1961), Dutch astronomer. Raman Chandrasekhra Venkata ~ (1888-1970), Indian physicist; in 1930, he became the first Asian to receive a Nobel Prize in science (physics). Ramsay Sir William ~ (1852-1916), Scottish chemist; awarded Nobel Prize in chemistry (1904). Ramsden Jesse ~ (1735-1800), British inventor; perfected early sextants and barometers; devised the first satisfactory screw-cutting lathes at dawn of the Industrial Revolution. Rankine William John Macquorn ~ (1820-1872), Scottish inventor, civil engineer, poet and molecular physicist. Raspletin Aleksandr Andreyevich ~ (1908-1967), Soviet radio and electronics engineer.

70. Nicolás Copérnico Es La Forma Castellana De Niclas Kopernik, Translate this page Fue en 1539 cuando el joven profesor de Wittenberg, georg joachim rheticus, matemáticoy astrónomo protegido de Melanchton, llegó a Frombork a causa del http://www.lafacu.com/apuntes/historia/Niclas_Kopernik/default.htm

Nicolás Copérnico es la forma castellana de Niclas Kopernik , astrónomo y matemático nacido el 19 de Febrero de 1473 en Torun Polonia ), quien fuera impulsor de la revolución científica que llevaría su mismo nombre. En el año 1491, Copérnico se matriculó en la Universidad de Cracovia , donde tuvo oportunidad de recibir una sólida formación matemática y estableció un primer contacto con los problemas de la astronomía geocéntrica. En 1497, Copérnico ingresó en la célebre Escuela de Juristas de la Universidad de Bolonia donde prolongó sus estudios de Derecho canónico hasta 1500 sin que ello le impidiese continuar con sus indagaciones astronómicas de la mano del profesor Domenico María Novara . Es significativo el fenómeno observado por ambos un 9 de marzo de 1497, consistente en la ocultación de la estrella Aldebarán tras la sombra de la Luna. Este fenómeno astronómico ponía en duda el modelo sostenido por Ptolomeo y abría las puertas a una nueva investigación divergente. Durante los dos años siguientes, Copérnico residió en la ciudad de Padua , epicentro por aquel entonces de la corriente humanista que influenció en su pensamiento. Ello explica la acentuada visión neo-platónica que su obra refleja.

71. [ Link To The Department Of The History Of Science ] [ Link To only reluctantly by Copernicus who had held onto the manuscript for many years,and actually brought to the printer by a disciple, georg joachim (rheticus). http://libraries.ou.edu/depts/HistScience/gala/macro/copernicus.htm

72. Alte Drucke - Vorarlberger Landesbibliohtek Translate this page 400 Werke) vertretenen geistig führenden Köpfen zählen in erster Linie dieHumanisten georg joachim rheticus (1514 - 1574) aus Feldkirch, der einzige http://www.vorarlberg.at/vlb/vlbsammlungen/altedrucke.htm

Allgemeines Service Katalog/Suche Bestände/Sammlungen ... zurück Alte Drucke Inkunabeln Drucke des 16. Jahrhunderts Vorarlbergensien (vor 1850) Vorarlberger Autoren ... Schloßbibliothek der Fürsten Rosenberg-Orsini Angesichts der zum Teil überaus bedeutenden Büchersammlungen, die sich bereits im Mittelalter bzw. in der frühen Neuzeit in Vorarlberg befanden, sind die bei der Gründung der Vorarlberger Landesbibliothek im Jahre 1977 übernommenen historischen Schriften als eher bescheiden zu bezeichnen. Ein Blick auf die Bibliotheksgeschichte Vorarlbergs zeigt, daß dies jedoch nicht weiter verwunderlich ist. Wie anderswo waren auch bei uns Klöster, andere kirchliche Organisationen, Privatpersonen und vor allem Adelige um Bewahrung und Sammlung von Schriftgut bemüht. Namentlich hervorzuheben sind dabei die Benediktinerabtei in der Mehrerau, die Klöster St. Anna und Thalbach in Bregenz, das Minoritenkloster Viktorsberg sowie das Jesuitengymnasium in Feldkirch. Besonders wertvolle Literaturschätze beherbergten die von Graf Jakob Hannibal I. von Hohenems gegründete und von seinem Sohn Kaspar ausgebaute Schloßbibliothek und die Humanistenbibliotheken des Hieronymus Münzer oder des Michael sowie Vater und Sohn Gabriel Hummelberg aus Feldkirch. Als im Zuge der Reformpolitik Maria Theresias und Josephs II. jedes Kronland eine eigene wissenschaftliche Bibliothek erhalten sollte, ging Vorarlberg, da es verwaltungsmäßig zu Vorderösterreich und ab 1782 wieder zu Tirol gehörte und damit kein eigenständiges Kronland war, leer aus.

73. Letture Pubbliche Translate this page Scuola Normale Superiore, Aula Bianchi, ore 21 Stefan Hildebrandt (Università diBonn) georg joachim rheticus e la rivoluzione scientifica del Risorgimento. http://www.crm.sns.it/letture.html

Le lezioni pubbliche del Centro De Giorgi Nel periodo Gennaio - Ottobre 2003, il Centro di Ricerca Matematica Ennio De Giorgi organizza un ciclo di Lezioni Pubbliche su Le lezioni si terranno nel periodo Gennaio - Ottobre 2003 ed avranno il seguente calendario: 15 GENNAIO 2003 Leonardo Fibonacci e la rinascita della matematica in Occidente 19 FEBBRAIO 2003 Matematica e Tecnologia: un connubio fecondo 17 MARZO 2003 Matematica e Gioco 16 APRILE 2003 Scuola Normale Superiore, Aula Bianchi, ore 21 14 MAGGIO 2003 Scuola Normale Superiore, Aula Bianchi, ore 21 Lucio Russo (Università di Roma "Tor Vergata"): Il ruolo della matematica nella formazione 18 GIUGNO 2003 Scuola Normale Superiore, Aula Bianchi, ore 21 Simmetrie musicali 15 OTTOBRE 2003 Scuola Normale Superiore, Aula Bianchi, ore 21 Georg Joachim Rheticus e la rivoluzione scientifica del Rinascimento

74. PhysicsWeb - Homepage More featured companies. on this day. georg joachim von Lauchen rheticus, early supporterof Copernicus' heliocentric theory, was born in 1514, Oxford Instruments. http://physicsweb.org/toc/12/12

Advanced site search latest issue Physics and DNA 50 years of physics and the double helix The Rosalind Franklin question Why are we still fascinated by the Dark Lady of DNA? Biological quantum dots go live Nanocrystals can now be used to image living cells The Cavendish Laboratory and structural biology Why was the biggest discovery in 20th century biology made in a physics lab? physics world January February March April May June July August September October November December Latest issue Subscribe to Physics World Media Information ... Editorial Staff quick search Search Physics World January Latest Issue physics world alerts Sign up to our news alerting service or alter your alert settings featured companies PINK GmbH Trinos Vakuum Systeme GmbH Field Precision FAST ComTec GmbH ... More featured companies on this day Robert Bunsen , physical chemist best known for improving the Bunsen burner, was born 1811 Home News Physics World PhysicsJobs ... Legal Notice

75. Adam, Melchior joachim, georg rheticus (1514? -1576) Astronom - Phil. p. 293; Hortensius,Lambert auch Montfortius; Hove, Lambertus van den (?-1574) Humanist http://www.uni-mannheim.de/mateo/camenaref/adam/adam1.html

Titel Gratulationsgedicht Widmung (6 p.) Index (4 p.) Elenchus (4 p.) Fust, Johann Peuerbach, Georg von [auch: Purbach] (1423-1461) Mathematiker; Astronom; Humanist - Phil. p. 4 Regiomontanus, Johannes Hegius, Alexander [auch: Heck, Sander de] (ca. 1433-1498) humanistischer Schulmann - Phil. p. 12 Agricola, Rudolf (1444-1485) Humanist - Phil. p. 13 Wessel, Johann [auch: Gansfort, Johannes] (1419-1489) Theologe; Humanist; Altphilologe - Phil. p. 21 Schott, Peter (1458-1490) Humanist - Phil. p. 24 Bebel, Heinrich (1472-1518) Humanist - Phil. p. 26 Nauclerus, Johannes Celtis, Konrad [auch: Celtes] (1459-1508) Humanist; Dichter - Phil. p. 29 Murmellius, Johann Krantz, Albert [auch: Crantzius] (1448-1517) Geistlicher; Gelehrter; hansischer Syndikus; Humanist; Chronist; Jurist; Historiker - Phil. p. 33 Langen, Rudolf von [auch: Langius] (um 1438-1519) Humanist - Phil. p. 35 Reuchlin, Johannes [auch: Capnio] (1455-1522) Humanist - Phil. p. 37 Longolius, Christophorus [auch: Langerak; Longueil] (1488-1522) Humanist - Phil. p. 45 Mosellanus, Petrus

76. Nature Publishing Group many natural phenomena, which in the Suncentred plan were linked together as bygolden chain , in the words of his young disciple, georg joachim rheticus. http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v391/n6663/full/

77. Programm Kolloquium 1999 Translate this page rheticus, georg Johann (1514 - 1574), Jesse Kraai, Bielefeld 11,10 Pitiscus, Bartholomäus(1561 - 1613), Martin Hellmann, Heidelberg 11,30 Jungius, joachim ( http://www.adam-ries-bund.de/aktuelles/koll99prog.htm

Programm zum wissenschaftlichen Kolloquium: Rechenbücher und mathematische Texte der frühen Neuzeit Freitag, den 16.04.1999 Samstag, den 17.04.1999 Sonntag, den 18.04.1999 ... Organisation Freitag, den 16.04.1999 nach oben 09,30 Eröffnung 10,00 Amann, Friedrich ( - 1464), Dr. Armin Gerl, Regensburg 10,20 Licht, Balthasar (vor 1490 - nach 1509), Dr. Barbara Gärtner, Heidelberg 10,40 Stromer, Heinrich (1482 - 1542), Prof. Dr. Wolfgang Lorenz, Annaberg-Buchholz 11,00 Diskussion / Pause 11,30 Stabius, Johann (um 1450 - 1522), Prof. Dr. H. K. Kaiser, Wien 11,50 Tannstetter, Georg (1482 - 1535), Dr. Christa Binder, Wien 12,10 Pock (Bock), Hans (um 1544), Dr. Johann Tomaschek, Admont/Steiermark 12,30 Dürer, Albrecht (1471 - 1528), Dr. habil. Eberhard Schröter, Hirschberg 12,50 Diskussion / Mittagspause 14,00 Möglichkeit zum Besuch der Annenkirche 15,30 Sekgerwitz, Johan (um 1485 - vor 1529) und Schleuper, Caspar (1535 - nach 1598) Dipl.-Ing. Richard Hergenhahn, Unna 15,50 Suevus, Sigismund (1527 - 1596), Dipl.-Ing. Richard Hergenhahn, Unna 16,10 Hocke, Gielies vanden (um 1537), Prof. Dr. Wolfgang Kaunzner, Regensburg

78. Untitled In 1541 the mathematician georg joachim (15141576), better known as rheticus,visited Copernicus in Frauenberg, Poland, in order to learn of his new http://www.astro.psu.edu/users/usher/ox.html

79. Nat'l Academies Press, Eclipse: (2001), 13. ...and A Fourth georg joachim rheticus (15141576) Because Mercury end Venus are sunward of theEarth they, like the Moon during a solar eclipse, may pass across the face of http://www.nap.edu/books/030907438X/html/273.html

Eclipse: The Celestial Phenomenon That Changed the Course of History Joseph Henry Press ( JHP Related Books Openbook Linked Table of Contents Front Matter, pp. i-xviii 1. From the Depths of Time: The E..., pp. 1-36 2. The Heavenly Cycles, pp. 37-67 3. Making Predictions, pp. 68-104 4. A Warp in Space, pp. 105-124 5. The Turbulent Sun, pp. 125-146 6. Ancient Eclipses and the Length..., pp. 147-160 7. Eclipses and the Size of the Su..., pp. 161-173 8. The American Eclipses of 1780 a..., pp. 174-195 9. The Rocky Mountain Eclipse of 1..., pp. 196-212 10. The Great New York City Winter..., pp. 213-228 11. Nantucket, the Astronomically ..., pp. 229-244 12. Eclipses of the Third Kind, pp. 245-272 13. ...and a Fourth, pp. 273-309 14. Stepping Beyond the Solar Syst..., pp. 310-326 15. An Eclipse Chaser's Guide, pp. 327-355 16. An Eclipse Whodunit, pp. 356-382 Appendix: Calculating Eclipses, pp. 383-434 Glossary of Astronomical and Scient..., pp. 435-440 Picture Credits, pp. 441-444 Index, pp. 445-474 THIS PAGE You may want to explore these Related Books Openbook Linked Table of Contents Front Matter, pp. i-xviii

80. 450 Revolutions Later ``De Revolutionibus In Retrospect magnum opus would not have been printed in his lifetime except for the arrival ofa young disciple from Wittenberg, georg joachim rheticus, who eventually took http://www.aas.org/publications/baas/v25n2/aas182/abshtml/S7901.html

Previous abstract Next abstract Session 79 HAD/Huntington I Oral presentation, Thursday, 2:30-4:00, Huntington Library Room [79.01] 450 Revolutions Later: ``De revolutionibus" in Retrospect Owen Gingerich (CfA) We do not know precisely when or why Nicholas Copernicus adopted a heliocentric system. Before 1514, he wrote a brief prospectus for his radical rearrangement of the planets (the so-called Commentariolus ), but he realized that to compete with Ptolemy's Almagest , he had to prepare a major treatise that included key observations distributed over each planet's orbit. Copernicus remained hard at work on this task in his late 60s. His still partly unfinished magnum opus would not have been printed in his lifetime except for the arrival of a young disciple from Wittenberg, Georg Joachim Rheticus, who eventually took a copy of the manuscript to Nuremberg for publication. The printing of approximately 400 copies of the book was completed in April of 1543, and the final sheets (actually the front matter, which was struck off last) reached Copernicus only on the day he died, 24 May 1543. Copernicus had found a ``theory pleasing to the mind," but he had no observational evidence to

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