21. Johannes Kepler Johannes Kepler was born on December 27, 1571, a premature child. To be precise,according to his own records, the pregnancy lasted 224 days, 9 hours and 53 http://www.phys.virginia.edu/classes/109N/1995/lectures/kepler.html

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22. Johannes Kepler Johannes Kepler was born in Weil der Stadt in Swabia, in southwest Germany. Johannes Kepler and Planetary Motion. London Chatto and Windus. http://cnx.rice.edu/content/m11962/latest/

Johannes Kepler By: Albert Van Helden Summary: A brief biography of Johannes Kepler (1571-1630). Figure 1: Johannes Kepler Kepler's teacher in the mathematical subjects was Michael Maestlin (1580-1635). Maestlin was one of the earliest astronomers to subscribe to Copernicus's heliocentric theory, although in his university lectures he taught only the Ptolemaic system. Only in what we might call graduate seminars did he acquaint his students, among whom was Kepler, with the technical details of the Copernican system . Kepler stated later that at this time he became a Copernican for "physical or, if you prefer, metaphysical reasons." In 1594 Kepler accepted an appointment as professor of mathematics at the Protestant seminary in Graz (in the Austrian province of Styria). He was also appointed district mathematician and calendar maker. Kepler remained in Graz until 1600, when all Protestants were forced to convert to Catholicism or leave the province, as part of Counter Reformation measures. For six years, Kepler taught arithmetic, geometry (when there were interested students), Virgil, and rhetoric. In his spare time he pursued his private studies in astronomy and astrology. In 1597 Kepler married Barbara Muller. In that same year he published his first important work, The Cosmographic Mystery , in which he argued that the distances of the planets from the Sun in the Copernican system were determined by the five regular solids, if one supposed that a planet's orbit was circumscribed about one solid and inscribed in another.

23. Kepler Johannes Biography of Johannes Kepler (15711630) Johannes Kepler (27 Dec. 1571 inWeil der Stadt (near Leonberg) - 15 Nov. 1630 in Regensburg) http://homepages.compuserve.de/thweidenfeller/mathematiker/Kepler.htm

Johannes Kepler (27 Dec. 1571 in Weil der Stadt (near Leonberg) - 15 Nov. 1630 in Regensburg) Johannes Kepler discovered that planets move round the Sun in elliptical orbits. He gave three mathematical laws of planetary motion. Kepler was a devout, but not completely orthodox, Lutheran. He was a convinced Platonist, which is to say that he looked for mathematical relationships in the observable universe. Kepler attended the University of Tübingen, where his mathematical ability was noticed by his astronomy teacher Michael Maestlin. Officially Maestlin taught geocentric (Ptolemaic) astronomy, but able pupils, among them Kepler, were also introduced to the heliocentric astronomy of Copernicus (published in 1543). Kepler originally intended to become a priest, but was persuaded to take up a post teaching mathematics at Graz. In 1596, Kepler published his Mysterium Cosmographicum, which argues for the truth of the Copernican system by giving a mathematical explanation of its structure (in terms of regular polyhedra). In 1600, Kepler went to Prague, as assistant to Tycho Brahe. Brahe died in 1601, but Kepler went on to use his observations to calculate planetary orbits of unprecedented accuracy.

24. Johannes_Kepler imageJohannes Kepler.jpg thumb Johannes Kepler Johannes Kepler (December27, 1571 – November 15, 1630), a key figure in the scientific revolution, http://copernicus.subdomain.de/Johannes_Kepler

Suche: Main Page '''Johannes Kepler''' ( December 27 November 15 ), a key figure in the scientific revolution , was a German astronomer mathematician and astrologer . He is best known for his laws of planetary motion . He is sometimes referred to as "the first theoretical astrophysicist ", although Carl Sagan also refers to him as the last scientific astrologer Kepler was a professor of mathematics at the University of Graz , court mathematician to Emperor Rudolf II , and court astrologer to General Wallenstein . Early in his career, Kepler was an assistant to Tycho Brahe . Kepler's career also coincided with that of Galileo Galilei In 1975, nine years after its founding, the College for Social and Economic Sciences Linz (Austria) was renamed Johannes Kepler University Linz in honor of Johannes Kepler, since he wrote his ''magnum opus'' '''harmonices mundi''' ("The Harmony of the world") in Linz during the early 17th century. Kepler's life Kepler was born on December 27 at the Imperial Free City of Weil der Stadt (now part of the Stuttgart Region in the German state of Baden-W�rttemberg , 30 km west of Stuttgart's city center). His grandfather had been Lord Mayor of that town, but by the time Johannes was born, the Kepler family fortunes were in decline. His father earned a precarious living as a

25. Encyklopedia: Kepler Johannes kepler johannes (15711630), wybitny astronom, matematyk i fizyk niemiecki dobyrenesansu, profesor uniwersytetu w Grazu, Linzu, uczen i http://wiem.onet.pl/wiem/00b8c1.html

Czat Poczta Onet.pl onet.pl ... Portal wiedzy Strony WWW: W polskim Internecie ¦wiatowy Internet Katalog stron Wiadomo¶ci Niusy Pliki Encyklopedia WIEM Og³oszenia: Praca i rekrutacja Motoryzacyjne Nieruchomo¶ci Strona g³ówna Encyklopedie T³umacz Polszczyzna ... Sklep Szukaj w Onet.pl kepler johannes katalog.onet.pl Kontakt Napisz do nas O nas Pomoc Jak szukaæ ... Informacje o produktach Encyklopedie wszystkie encyklopedia prawa Poka¿ tylko zdjêcia, filmy i mapy Jak szukaæ? Kepler Johannes Dodaj do notesu Astronomia, Fizyka, Matematyka, Europa, Niemcy Galeria zdjêæ: 2 Galeria filmów: 1 Kepler Johannes (1571-1630), wybitny astronom, matematyk i fizyk niemiecki doby renesansu, profesor uniwersytetu w Grazu, Linzu, uczeñ i kontynuator prac T. de Brahe w obserwatorium astronomicznym w... widzisz tylko tre¶ci has³a chcesz zobaczyæ resztê? dostêp do pe³nej wersji encyklopedii SMS tylko 3,66 z³ z VAT Wpisz kod: Dlaczego warto korzystaæ z WIEM? WIEM w internecie to najlepszy i najszybszy sposób uzyskania informacji o ¶wiecie. WIEM w internecie to codziennie aktualizowana i najbardziej aktualna encyklopedia internetowa w Polsce! WIEM zawiera obszern± bazê bogato ilustrowanych hase³. W serwisie specjalna wyszukiwarka do mediów, notes i kalendarium.

26. Kepler Johannes Johannes Kepler (15711630) oli saksalainen tähtitieteilijä. Kepler oli 1600-1601Tyko Johannes Kepler ja uusi tähtitiede, Tähdet ja avaruus 1/85, s. http://www.ursa.fi/extra/kosmos/k/kepler.html

K Kepler Johannes Johannes Kepler (1571-1630) oli saksalainen tähtitieteilijä. Kepler oli 1600-1601 Tyko Brahen apulaisena, sitten tämän seuraajana keisarillisena matemaatikkona Prahassa. Tykon Marsista tekemien havaintojen avulla hän löysi kolme Keplerin lakia . Kepler tutki myös mm. optiikkaa Kosmos, s. 71-80 Tähtitieteen perusteet, s. 538-540 Maailmankaikkeutta tutkimassa, s. 42-45 Vedenjakajalla, koko kirja Tanssi Auringon ympäri, s. 261-422 Aurinkokunta, s. 12 Tähtitaivas 2000, s. 94, 164 Tähtitaivas, s. 20-21 Vanhin tiede, s. 125-130, 445-446 Johannes Kepler ja uusi tähtitiede, Tähdet ja avaruus 1/85, s. 8-12 Keplerin Unimatka Kuuhun, Tähdet ja avaruus 4/94, s. 17-18 Edellinen hakusana: Kefeidi Seuraava hakusana: Keplerin lait Etusivu Hakemisto Lähteet

27. Pro-Physik.de Findemaschine Johannes Kepler (15711630) Johannes Kepler was born in Weil der Stadt in The Galileo Project Science Johannes kepler johannes kepler johannes http://findemaschine.pro-physik.de/search/index.php3?domain=prophysik&vkid=24765

28. Kepler Johannes Translate this page Courte biographie de Johannes Kepler. kepler johannes (1571-1630). Né àWeilderstadt , dans le Wurtemberg , sa première vocation fut de devenir pasteur. http://perso.wanadoo.fr/alain.calloch/pages/astropenseur4.htm

Kepler Johannes (1571-1630) Retour Astro penseurs suite

29. IFS Homepage Department of Information Systems. Research areas include active objectoriented databases, object-oriented development, distributed information systems and hypermedia document management. http://www.ifs.uni-linz.ac.at/

Home People Teaching Research Projects Useful Department of Information Systems Informatikinstitute Access statistics of this server

30. Biografia De Kepler, Johannes Biograf­a y aportaciones del astr³nomo alem¡n. http://www.biografiasyvidas.com/biografia/k/kepler.htm

Inicio Buscador Las figuras clave de la historia Reportajes Los protagonistas de la actualidad Kepler, Johannes (Würtemburg, actual Alemania, 1571-Ratisbona, id., 1630) Astrónomo, matemático y físico alemán. Hijo de un mercenario -que sirvió por dinero en las huestes del duque de Alba y desapareció en el exilio en 1589- y de una madre sospechosa de practicar la brujería, Johannes Kepler superó las secuelas de una infancia desgraciada y sórdida merced a su tenacidad e inteligencia. Tras estudiar en los seminarios de Adelberg y Maulbronn, Kepler ingresó en la Universidad de Tubinga (1588), donde cursó los estudios de teología y fue también discípulo del copernicano Michael Mästlin. En 1594, sin embargo, interrumpió su carrera teológica al aceptar una plaza como profesor de matemáticas en el seminario protestante de Graz. Johannes Kepler Cuatro años más tarde, unos meses después de contraer un matrimonio de conveniencia, el edicto del archiduque Fernando contra los maestros protestantes le obligó a abandonar Austria y en 1600 se trasladó a Praga invitado por Tycho Brahe. Cuando éste murió repentinamente al año siguiente, Kepler lo sustituyó como matemático imperial de Rodolfo II, con el encargo de acabar las tablas astronómicas iniciadas por Brahe y en calidad de consejero astrológico, función a la que recurrió con frecuencia para ganarse la vida. En 1611 fallecieron su esposa y uno de sus tres hijos; poco tiempo después, tras el óbito del emperador y la subida al trono de su hermano Matías, fue nombrado profesor de matemáticas en Linz. Allí residió Kepler hasta que, en 1626, las dificultades económicas y el clima de inestabilidad originado por la guerra de los Treinta Años lo llevaron a Ulm, donde supervisó la impresión de las

31. Johannes Kepler A short biography. http://galileoandeinstein.physics.virginia.edu/1995/lectures/kepler.html

Johannes Kepler Michael Fowler, UVa Physics Galileo and Einstein Home Page Link to Previous Lecture (Tycho Brahe) As a seven-month child, Kepler was sickly from birth, and contracted smallpox when very young. His vision was severely defective, and he had various other illnesses fairly constantly, some of which may have been hypochondria. He took twice as long as normal children to get through elementary latin. He did a little better when he got to the higher school at Maulbronn, a school which only half a century earlier was haunted by the ill-famed Dr. Faustus (ref 2). While lecturing to his math class in Graz, contemplating some geometric figure involving concentric circles and triangles on the blackboard, Kepler suddenly realized that figures of the type shown here determine a definite fixed ratio between the sizes of the two circles, provided the triangle has all sides equal, and a different ratio of sizes will occur for a square between the two circles, another for a regular pentagon, and so on. Mysterium Cosmographicum the mystery of the universe (explained). The crucial illustration from his book is shown below, the outer sphere being the orbit of Saturn, and the central part is shown magnified at top right.

32. Kepler Biography of johannes kepler (15711630) johannes kepler is now chieflyremembered for discovering the three laws of planetary motion that bear his name http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Kepler.html

Johannes Kepler Born: Died: 15 Nov 1630 in Regensburg (now in Germany) Click the picture above to see eleven larger pictures Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Version for printing Johannes Kepler is now chiefly remembered for discovering the three laws of planetary motion that bear his name published in 1609 and 1619). He also did important work in optics (1604, 1611), discovered two new regular polyhedra (1619), gave the first mathematical treatment of close packing of equal spheres (leading to an explanation of the shape of the cells of a honeycomb, 1611), gave the first proof of how logarithms worked (1624), and devised a method of finding the volumes of solids of revolution that (with hindsight!) can be seen as contributing to the development of calculus (1615, 1616). Moreover, he calculated the most exact astronomical tables hitherto known, whose continued accuracy did much to establish the truth of heliocentric astronomy ( Rudolphine Tables , Ulm, 1627).

33. Tycho Brahe And Johannes Kepler Short biographies. http://galileoandeinstein.physics.virginia.edu/lectures/tycho.htm

Tycho Brahe and Johannes Kepler (Condensed Version: see below for links to fuller version) Michael Fowler University of Virginia Index of Lectures and Overview of the Course Link to Previous Lecture These two colorful characters made crucial contributions to our understanding of the universe - Tycho's observations were accurate enough for Kepler to discover that the planets moved in elliptic orbits, and his other laws, which gave Newton the clues he needed to establish universal inverse-square gravitation. What you should know: Tycho Brahe (1546-1601), from a rich Danish noble family, was fascinated by astronomy, but disappointed with the accuracy of tables of planetary motion at the time. He decided to dedicate his life and considerable resources to recording planetary positions ten times more accurately than the best previous work. After some early successes, and in gratitude for having his life saved by Tycho's uncle, the king of Denmark gave Tycho tremendous resources - an island with many families on it, and money to build an observatory. (One estimate is that this was 10% of the gross national product at the time!) Tycho built vast instruments to set accurate sights on the stars, and used multiple clocks and timekeepers. He achieved his goal of measuring to one minute of arc. This was a tremendous feat before the invention of the telescope. His aim was to confirm his own picture of the universe, which was that the earth was at rest, the sun went around the earth and the planets all went around the sun - an intermediate picture between Ptolemy and Copernicus.

34. Johannes Kepler: His Life, His Laws And Times johannes kepler was born at 230 PM on December 27, 1571, johannes keplerdied in Regensburg in 1630, while on a journey from his home in Sagan to http://www.kepler.arc.nasa.gov/johannes.html

This page is moving to a new address. It will appear in 3 seconds. Please update your bookmarks or favorites accordingly. Updated 10/06/04 Johannes Kepler His Life, His Laws and Times Picture courtesy of A Short Biography A List of Kepler's Firsts Kepler's Laws of Planetary Motion People and Events Contemporary to Kepler (1571-1630) ... Biographies and books on Kepler A Short Biography to study for the Lutheran ministry . There he was introduced to the ideas of Copernicus and delighted in them. In 1596, while a mathematics teacher in Graz, he wrote the first outspoken defense of the Copernican system, the Mysterium Cosmographicum Kepler's family was Lutheran and he adhered to the Augsburg Confession a defining document for Lutheranism. However, he did not adhere to the Lutheran position on the real presence and refused to sign the Formula of Concord . Because of his refusal he was excluded from the sacrament in the Lutheran church. This and his refusal to convert to Catholicism left him alienated by both the Lutherans and the Catholics. Thus he had no refuge during the Thirty-Years War. The Holy Roman Empire of German Nationality at the Time of Kepler Kepler was forced to leave his teaching post at Graz due to the counter Reformation because he was Lutheran and moved to Prague to work with the renowned Danish astronomer, Tycho Brahe. He inherited Tycho's post as Imperial Mathematician when Tycho died in 1601. Using the precise data that Tycho had collected, Kepler discovered that the orbit of Mars was an ellipse. In 1609 he published

35. Johannes Kepler Universität (JKU) Linz Universit¤t mit einer speziellen Kombination von Wirtschafts und Sozialwissenschaften, Rechtswissenschaften und technisch- naturwissenschaftlichen Fachrichtungen in Ober¶sterreich. Die Website bietet Informationen rund um den Linzer Campus. http://www.uni-linz.ac.at/

Your browser does not support script Volltextsuche Studieninformationsmesse (SIM) Studienzulassung ONLINE Information for International Students Altenberger Str. 69, A-4040 Linz, Austria Telefon +43 732 / 2468 Fax +43 732 / 2468 - 8822 Internet www.jku.at webmaster@jku.at

36. Johannes Kepler The German astronomer johannes kepler, b. Dec. 27, 1571, d. Nov. 15, 1630, wasthe first strong supporter of the heliocentric theory of Copernicus and the http://www.phy.hr/~dpaar/fizicari/xkepler.html

Johannes Kepler The German astronomer Johannes Kepler, b. Dec. 27, 1571, d. Nov. 15, 1630, was the first strong supporter of the heliocentric theory of Copernicus and the discoverer of the three laws of planetary motion. He attended seminaries at Adelberg and Maulbronn before studying theology, philosophy, and mathematics at the University of Tubingen. At Tubingen, Kepler's scientific ability attracted the notice of the astronomer Michael Maestlin. Through Maestlin, Kepler became a supporter of the Copernican theory, although his teacher continued to expound officially the old Ptolemaic system. Kepler had planned to enter religious life, but he accepted a chair in mathematics and astronomy at Graz. At the age of 24, Kepler published Mysterium cosmographicum (Cosmographic Mystery, 1596), in which he defended the Copernican theory and described his ideas on the structure of the planetary system. Influenced by the Pythagoreans, Kepler viewed the universe as being governed by geometric relationships that conform to the inscribed and circumscribed circles of the five regular polygons. Although he was not a Copernican himself, Tycho Brahe, the mathematician at the court of Emperor Rudolph II at Prague, was so impressed with Kepler's work that in 1600 he invited Kepler to come to Prague as his assistant. Confronted with the Catholic persecution of the Protestant minority in Graz, Kepler gladly accepted. When Brahe died the following year, Kepler was appointed his successor and thus inherited Brahe's scientific legacy.

37. Johannes Kepler University Linz - Home Includes news, staff, research, teaching, organisation, faculties, contact information. http://www.uni-linz.ac.at/index_e.htm

Job Offer - Senior Faculty Position Biophysics Johannes Kepler University Linz Altenbergerstr. 69 A-4040 Linz Tel. +43 732 2468 0; Fax +43 732 2468 10

38. Kepler, Johannes (1571-1630) -- From Eric Weisstein's World Of Scientific Biogra Baumgardt, C. johannes kepler Life and Letters. London Gollancz, 1952. Caspar, M.kepler. Koestler, A. The Watershed A Biography of johannes kepler. http://scienceworld.wolfram.com/biography/Kepler.html

Branch of Science Astronomers Nationality German Kepler, Johannes (1571-1630) Austrian mathematician and astronomer who got himself taken on as an assistant to Brahe in order to get access to his planetary tables. Kepler had been trained as a Platonist and Neopythagorean, and was given to rather mystical views, as exemplified in his work Mysterium Cosmographicum. Nevertheless, Kepler was also a confirmed Copernican. In fact, he wanted to use Tycho's data to prove the validity of the Copernican theory. He analyzed the vast amount of data upon Brahe's death. From this data, he prepared new planetary tables (called the Rudolphine Tables). At first, he determined the shape of planetary orbits to be ovoid, but rejected this result for aesthetic reasons. Going back over his calculations, he found and corrected an error. The new shape turned out to be an ellipse which fit well into Kepler's Pythagorean views on nature. Kepler tried all sorts of mystical notions to describe planetary orbits, using the Platonic solids and musical analogies. Spread out through his voluminous calculations in

39. Johannes Kepler - Defender Of Copernicus - Planetary Lawmaker The son of a mercenary soldier and an innkeeper's daughter who later became a brilliant and prolific mathematician and astronomer, and creator of the Three Laws of Planetary Motion. http://space.about.com/library/weekly/aa090702a.htm

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40. Johannes Kepler - Defender Of Copernicus - Planetary Lawmaker johannes kepler Defender of Copernicus - Planetary Lawmaker - Science FictionWriter. Read about the life and work of Tycho Brahe s successor, http://space.about.com/cs/astronomerbios/a/keplerbio.htm

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