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Johannes Praetorius
Johannes Praetorius or Johann Richter (1537 – 27 October 1616) was a Bohemian German mathematician and astronomer. Life Praetorius was born in Jáchymov, Bohemia. From 1557 he studied at the University of Wittenberg, and from 1562 to 1569 he lived in Nuremberg. His astronomical and mathematical instruments are kept at Germanisches Nationalmuseum in Nuremberg. In 1571 he became Professor of mathematics (astronomy) at Wittenberg where he met Valentinus Otho and Joachim Rheticus. He died in Altdorf bei Nürnberg, aged about 79. He taught Copernicus' theory of astronomy initially as a means of eliminating the equant from Ptolemy's account, and later moving to a proto-Tychonic system. Works * De cometis, qui antea visi sunt, et de eo qui novissime mense Novembri apparuit, narratio 1578 * Problema, quod iubet ex quatuor rectis lineis datis quadrilaterum fieri, quod sit in circulo 1598 References Sources * * Gerhard Bott (Hrsg.): ''Focus Behaim Globus.'' 2 Bde. Nürnb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equant
Equant (or punctum aequans) is a mathematical concept developed by Claudius Ptolemy in the 2nd century AD to account for the observed motion of the planets. The equant is used to explain the observed speed change in different stages of the planetary orbit. This planetary concept allowed Ptolemy to keep the theory of uniform circular motion alive by stating that the path of heavenly bodies was uniform around one point and circular around another point. Placement The equant point (shown in the diagram by the large • ), is placed so that it is directly opposite to Earth from the deferent's center, known as the ''eccentric'' (represented by the × ). A planet or the center of an epicycle (a smaller circle carrying the planet) was conceived to move at a constant angular speed with respect to the equant. In other words, to a hypothetical observer placed at the equant point, the epicycle's center (indicated by the small · ) would appear to move at a st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
16th-century German Astronomers
The 16th century begins with the Julian year 1501 ( MDI) and ends with either the Julian or the Gregorian year 1600 ( MDC) (depending on the reckoning used; the Gregorian calendar introduced a lapse of 10 days in October 1582). The 16th century is regarded by historians as the century which saw the rise of Western civilization and the Islamic gunpowder empires. The Renaissance in Italy and Europe saw the emergence of important artists, authors and scientists, and led to the foundation of important subjects which include accounting and political science. Copernicus proposed the heliocentric universe, which was met with strong resistance, and Tycho Brahe refuted the theory of celestial spheres through observational measurement of the 1572 appearance of a Milky Way supernova. These events directly challenged the long-held notion of an immutable universe supported by Ptolemy and Aristotle, and led to major revolutions in astronomy and science. Galileo Galilei became a champion o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Wittenberg Faculty
A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, the designation is reserved for colleges that have a graduate school. The word ''university'' is derived from the Latin ''universitas magistrorum et scholarium'', which roughly means "community of teachers and scholars". The first universities were created in Europe by Catholic Church monks. The University of Bologna (''Università di Bologna''), founded in 1088, is the first university in the sense of: *Being a high degree-awarding institute. *Having independence from the ecclesiastic schools, although conducted by both clergy and non-clergy. *Using the word ''universitas'' (which was coined at its foundation). *Issuing secular and non-secular degrees: grammar, rhetoric, logic, theology, canon law, notarial law.Hunt Janin: "The university i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Wittenberg Alumni
A university () is an educational institution, institution of higher education, higher (or Tertiary education, tertiary) education and research which awards academic degrees in several Discipline (academia), academic disciplines. Universities typically offer both undergraduate education, undergraduate and postgraduate education, postgraduate programs. In the United States, the designation is reserved for colleges that have a graduate school. The word ''university'' is derived from the Latin ''universitas magistrorum et scholarium'', which roughly means "community of teachers and scholars". The first universities were created in Europe by Catholic Church monks. The University of Bologna (''Università di Bologna''), founded in 1088, is the first university in the sense of: *Being a high degree-awarding institute. *Having independence from the ecclesiastic schools, although conducted by both clergy and non-clergy. *Using the word ''universitas'' (which was coined at its foundation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Bohemian People
German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Germanic peoples (Roman times) * German language **any of the Germanic languages * German cuisine, traditional foods of Germany People * German (given name) * German (surname) * Germán, a Spanish name Places * German (parish), Isle of Man * German, Albania, or Gërmej * German, Bulgaria * German, Iran * German, North Macedonia * German, New York, U.S. * Agios Germanos, Greece Other uses * German (mythology), a South Slavic mythological being * Germans (band), a Canadian rock band * "German" (song), a 2019 song by No Money Enterprise * ''The German'', a 2008 short film * "The Germans", an episode of ''Fawlty Towers'' * ''The German'', a nickname for Congolese rebel André Kisase Ngandu See also * Germanic (other) * Germ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People From Jáchymov
A person ( : people) is a being that has certain capacities or attributes such as reason, morality, consciousness or self-consciousness, and being a part of a culturally established form of social relations such as kinship, ownership of property, or legal responsibility. The defining features of personhood and, consequently, what makes a person count as a person, differ widely among cultures and contexts. In addition to the question of personhood, of what makes a being count as a person to begin with, there are further questions about personal identity and self: both about what makes any particular person that particular person instead of another, and about what makes a person at one time the same person as they were or will be at another time despite any intervening changes. The plural form "people" is often used to refer to an entire nation or ethnic group (as in "a people"), and this was the original meaning of the word; it subsequently acquired its use as a plural form of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1616 Deaths
Events January–June * January ** Six-year-old António Vieira arrives from Portugal, with his parents, in Bahia (present-day Salvador) in Colonial Brazil, where he will become a diplomat, noted author, leading figure of the Church, and protector of Brazilian indigenous peoples, in an age of intolerance. ** Officials in Württemberg charge astronomer Johannes Kepler with practicing "forbidden arts" (witchcraft). His mother had also been so charged and spent 14 months in prison. * January 1 – King James I of England attends the masque ''The Golden Age Restored'', a satire by Ben Jonson on fallen court favorite the Earl of Somerset. The king asks for a repeat performance on January 6. * January 3 – In the court of James I of England, the king's favorite George Villiers becomes Master of the Horse (encouraging development of the thoroughbred horse); on April 24 he receives the Order of the Garter; and on August 27 is created Viscount Villiers and Baron Waddon, receivi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1537 Births
__NOTOC__ Year 1537 ( MDXXXVII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. Events January–June * January ** Bigod's Rebellion, an uprising by Roman Catholics against Henry VIII of England, is crushed. ** Battle of Ollantaytambo: Emperor Manco Inca Yupanqui is victorious against the Spanish and their Indian allies led by Hernando Pizarro. * March – Diego de Almagro successfully charges Manco Inca's siege of Cuzco, thereby saving his antagonists, the Pizarro brothers. * March 12 – Recife is founded by the Portuguese, in Brazil. * April – Spanish conquest of the Muisca: Bacatá, the main settlement of the Muisca Confederation, is conquered by Gonzalo Jiménez de Quesada, effectively ending the Confederation in the Colombian Eastern Andes. * April 1 – The Archbishop of Norway Olav Engelbrektsson flees from Trondheim to Lier, Belgium. * June 2 – Pope Paul III publishes the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evangelische Verlagsanstalt
The Evangelische Verlagsanstalt (EVA) is a denominational media company founded in Berlin in 1946. Its shareholders are the and the Evangelical-Lutheran Church of Saxony. The managing director is Sebastian Knöfel. Book publisher The range includes numerous theological-scientific publications, religious education, congregational literature including calendars as well as Christian Belles-lettres with a focus on biographies and stories. Newspapers and magazines The EVA publishes, among others, the ', the ', the ''Berliner Theologische Zeitschrift'' and the ' (formerly ''Die Christenlehre''). Private radio The Evangelische Verlagsanstalt GmbH is a shareholder in commercial broadcasting. In addition, female employees of the Evangelische Verlagsanstalt work as church radio editors in the Saxon broadcasters and . History 1946–1989 Under the licence number 54 of the Soviet Military Administration in Germany, the Evangelische Verlagsanstalt GmbH was founded in 1946 with he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of California Press
The University of California Press, otherwise known as UC Press, is a publishing house associated with the University of California that engages in academic publishing. It was founded in 1893 to publish scholarly and scientific works by faculty of the University of California, established 25 years earlier in 1868, and has been officially headquartered at the university's flagship campus in Berkeley, California, since its inception. As the non-profit publishing arm of the University of California system, the UC Press is fully subsidized by the university and the State of California. A third of its authors are faculty members of the university. The press publishes over 250 new books and almost four dozen multi-issue journals annually, in the humanities, social sciences, and natural sciences, and maintains approximately 4,000 book titles in print. It is also the digital publisher of Collabra and Luminos open access (OA) initiatives. The University of California Press publishes in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tychonic System
The Tychonic system (or Tychonian system) is a model of the Universe published by Tycho Brahe in the late 16th century, which combines what he saw as the mathematical benefits of the Copernican system with the philosophical and "physical" benefits of the Ptolemaic system. The model may have been inspired by Valentin Naboth and Paul Wittich, a Silesian mathematician and astronomer. A similar model was implicit in the calculations more than a century earlier by Nilakantha Somayaji of the Kerala school of astronomy and mathematics.Joseph, George G. (2000), ''The Crest of the Peacock: Non-European Roots of Mathematics'', p. 408, Princeton University Press, It is conceptually a geocentric model, or more precisely geoheliocentric: the Earth is at the centre of the universe, the Sun and Moon and the stars revolve around the Earth, and the other five planets revolve around the Sun. At the same time, the motions of the planets are mathematically equivalent to the motions in Copernic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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