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Johann Heinrich Hoffmann
Johann Heinrich Hoffmann (1669 in /Thüringen; April 6, 1716 in Berlin) was a German astronomer. Life and work Hoffmann was a student of Erhard Weigel and, until his death in 1699, his (assistant). He accompanied him on his journey of 1696 - 1697 to Denmark and Sweden. From February 1701 Hoffmann was employed first as Adjunkt and later as astronomer and observator at the Königlich Preußischen Sozietät der Wissenschaften in Berlin. At the Berlin Observatory he began his duties as assistant of the first director Gottfried Kirch and after the latter's death in 1710, he succeeded him as director and continued the main task of calculating the calendar, up till his own death.ARIDirektoren des Astronomischen Rechen-Instituts (bis 1874 der Berliner Sternwarte) Apart from his activities as director of the Berlin Observatory, from 1705 he led at the same time the private observatory of Bernhard Friedrich von Krosigk and was from 1710 until at least 1712 also a teacher to the Cadet C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berlin
Berlin ( , ) is the capital and largest city of Germany by both area and population. Its 3.7 million inhabitants make it the European Union's most populous city, according to population within city limits. One of Germany's sixteen constituent states, Berlin is surrounded by the State of Brandenburg and contiguous with Potsdam, Brandenburg's capital. Berlin's urban area, which has a population of around 4.5 million, is the second most populous urban area in Germany after the Ruhr. The Berlin-Brandenburg capital region has around 6.2 million inhabitants and is Germany's third-largest metropolitan region after the Rhine-Ruhr and Rhine-Main regions. Berlin straddles the banks of the Spree, which flows into the Havel (a tributary of the Elbe) in the western borough of Spandau. Among the city's main topographical features are the many lakes in the western and southeastern boroughs formed by the Spree, Havel and Dahme, the largest of which is Lake Müggelsee. Due to its l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomy
Astronomy () is a natural science that studies astronomical object, celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and chronology of the Universe, evolution. Objects of interest include planets, natural satellite, moons, stars, nebulae, galaxy, galaxies, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond atmosphere of Earth, Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole. Astronomy is one of the oldest natural sciences. The early civilizations in recorded history made methodical observations of the night sky. These include the Babylonian astronomy, Babylonians, Greek astronomy, Greeks, Indian astronomy, Indians, Egyptian astronomy, Egyptians, Chinese astronomy, Chinese, Maya civilization, Maya, and many anc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thüringen
Thuringia (; german: Thüringen ), officially the Free State of Thuringia ( ), is a state of central Germany, covering , the sixth smallest of the sixteen German states. It has a population of about 2.1 million. Erfurt is the capital and largest city. Other cities are Jena, Gera and Weimar. Thuringia is bordered by Bavaria, Hesse, Lower Saxony, Saxony-Anhalt, and Saxony. It has been known as "the green heart of Germany" () from the late 19th century due to its broad, dense forest. Most of Thuringia is in the Saale drainage basin, a left-bank tributary of the Elbe. Thuringia is home to the Rennsteig, Germany's best-known hiking trail. Its winter resort of Oberhof makes it a well-equipped winter sports destination – half of Germany's 136 Winter Olympic gold medals had been won by Thuringian athletes as of 2014. Thuringia was favoured by or was the birthplace of three key intellectuals and leaders in the arts: Johann Sebastian Bach, Johann Wolfgang von Goethe, and Friedri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomer
An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, natural satellite, moons, comets and galaxy, galaxies – in either observational astronomy, observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, Sun, solar astronomy, the Star formation, origin or stellar evolution, evolution of stars, or the galaxy formation and evolution, formation of galaxies. A related but distinct subject is physical cosmology, which studies the Universe as a whole. Types Astronomers usually fall under either of two main types: observational astronomy, observational and theoretical astronomy, theoretical. Observational astronomers make direct observations of Astronomical object, celestial objects and analyze the data. In contrast, theoretical astronomers create and investigate C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erhard Weigel
Erhard Weigel (16 December 1625 – 20 March 1699) was a German mathematician, astronomer and philosopher. Biography Weigel earned his M.A. (1650) and his habilitation (1652) from the University of Leipzig. From 1653 until his death he was professor of mathematics at Jena University. He was the teacher of Leibniz in summer 1663,Richard T. W. Arthur, 2014. ''Leibniz''. John Wiley & Sons. p. 16. and other notable students. He also worked to make science more widely accessible to the public, and what would today be considered a populariser of science. He concurred with Jakob Ellrod's "Mittel-Calendar", and with the advocacy of Leibniz and others, that the date of Easter should be based on the astronomical measurement of the spring equinox and the next full moon. He followed Jakob Ellrod to the Imperial Diet in Regensburg to advocate the use of the Mittel-Calendar or New Gregorian calendar. Timeline * 1625 born in Weiden in der Oberpfalz, son of clothier Michael Weigel and Anna W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prussian Academy Of Sciences
The Royal Prussian Academy of Sciences (german: Königlich-Preußische Akademie der Wissenschaften) was an academy established in Berlin, Germany on 11 July 1700, four years after the Prussian Academy of Arts, or "Arts Academy," to which "Berlin Academy" may also refer. In the 18th century, it was a French-language institution since French was the language of science and culture during that era. Origins Prince-elector Frederick III of Brandenburg, Germany founded the Academy under the name of ''Kurfürstlich Brandenburgische Societät der Wissenschaften'' ("Electoral Brandenburg Society of Sciences") upon the advice of Gottfried Wilhelm Leibniz, who was appointed president. Unlike other Academies, the Prussian Academy was not directly funded out of the state treasury. Frederick granted it the monopoly on producing and selling calendars in Brandenburg, a suggestion from Leibniz. As Frederick was crowned "King in Prussia" in 1701, creating the Kingdom of Prussia, the Academy was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berlin Observatory
The Berlin Observatory (Berliner Sternwarte) is a German astronomical institution with a series of observatories and related organizations in and around the city of Berlin in Germany, starting from the 18th century. It has its origins in 1700 when Gottfried Leibniz initiated the "Brandenburg Society of Science″ (''Sozietät der Wissenschaften'') which would later (1744) become the Prussian Academy of Sciences (''Preußische Akademie der Wissenschaften''). The Society had no observatory but nevertheless an astronomer, Gottfried Kirch, who observed from a private observatory in Berlin. A first small observatory was furnished in 1711, financing itself by calendrical computations. In 1825 Johann Franz Encke was appointed director by King Frederick William III of Prussia. With the support of Alexander von Humboldt, Encke got the King to agree to the financing of a true observatory, but one condition was that the observatory be made accessible to the public two nights per week. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gottfried Kirch
Gottfried Kirch (; also KircheKenneth Glyn Jones, ''The Search for the Nebulae'', Alpha Academic, 1975, p. 19. , Kirkius; 18 December 1639 – 25 July 1710) was a German astronomer and the first "Astronomer Royal" in Berlin and, as such, director of the nascent Berlin Observatory. Life and work The son of Michael Kirch, a shoemaker in Guben, Electorate of Saxony, initially he worked as a schoolmaster in Langgrün and Neundorf near Lobenstein. He also worked as a calendar-maker in Saxonia and Franconia. He began to learn astronomy with Erhard Weigel in Jena, and with Hevelius in Danzig. In Danzig in 1667, Kirch published calendars and built several telescopes and instruments. In 1679 he invented a screw micrometer for astronomical measurements. He became an astronomer working in Coburg, Leipzig and Guben as well from 1700 in Berlin. In the last quarter of the 17th century, Kirch was the most-read calendar maker and counted as one of the leading Germans. In 1680 he discovere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cadet Corps
A corps of cadets, also called cadet corps, was originally a kind of military school for boys. Initially such schools admitted only sons of the nobility or gentry, but in time many of the schools were opened also to members of other social classes. Since the 1800s "corps of cadets" has referred to the student body of cadets at a military academy. History Origins The original '''' corps was established by King Louis XIII of France for younger sons of Gascon gentry (in the Gascon language, ''capdets''—"little chiefs"). This idea of a school for boys who would later become gentlemen volunteers in the army to offset their lack of patrimony, soon spread, with similar schools being established in other European countries. Expansion Germanic countries Notable cadet-corps schools were created by the "Great Elector" Frederick William I of Brandenburg, in Kolberg, Berlin, and Magdeburg. In 1716 the 1st Kolberg corps of about seventy cadets was relocated to the Royal Prussian Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
17th-century German Astronomers
The 17th century lasted from January 1, 1601 ( MDCI), to December 31, 1700 ( MDCC). It falls into the early modern period of Europe and in that continent (whose impact on the world was increasing) was characterized by the Baroque cultural movement, the latter part of the Spanish Golden Age, the Dutch Golden Age, the French ''Grand Siècle'' dominated by Louis XIV, the Scientific Revolution, the world's first public company and megacorporation known as the Dutch East India Company, and according to some historians, the General Crisis. From the mid-17th century, European politics were increasingly dominated by the Kingdom of France of Louis XIV, where royal power was solidified domestically in the civil war of the Fronde. The semi-feudal territorial French nobility was weakened and subjugated to the power of an absolute monarchy through the reinvention of the Palace of Versailles from a hunting lodge to a gilded prison, in which a greatly expanded royal court could be more easily k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1669 Births
Events January–March * January 2 – Pirate Henry Morgan of Wales holds a meeting of his captains on board his ship, the former Royal Navy frigate ''Oxford'', and an explosion in the ship's gunpowder supply kills 200 of his crew and four of the pirate captains who had attended the summit. * January 4 – A 5.7 magnitude earthquake strikes the city of Shamakhi in Iran (now in Azerbaijan) and kills 7,000 people. Fourteen months earlier, an earthquake in Shamakhi killed 80,000 people. * February 13 – The first performance of the ''Ballet de Flore'', a joint collaboration of Jean-Baptiste Lully and Isaac de Benserade is given, premiering at the Palais du Louvre in Paris. King Louis XIV finances the performance and even appears in a minor role in the production as a dancer. * February 23 – Isaac Newton writes his first description of his new invention, the reflecting telescope. * March 11 – Mount Etna erupts, destroying the Sicilian town of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
