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Julius Reichelt
Julius Reichelt (1637–1717) was a German mathematician and astronomer who may have set up the first observatory in the city of Strasbourg. Biography Julius Reichelt was born on 5 January 1637 in the city of Strasbourg. In 1644 at the age of 16 he was enrolled as a student and graduated as Doctor of Philosophy in 1660. He was nominated as Professor of Mathematics in 1667. Reichelt traveled through Northern Europe some time after 1666 and met other notable 17th-century scientists and thinkers such as Jan Hudde, Johannes Hevelius, Andreas Concius, Henrik Ruse, Johannes Meyer, Rasmus Bartholin, and Adam Olearius. After his return from his trip Reichelt may have proposed the building of the "''turret lantern''" as an astronomical observatory at the top of Strasbourg's Hospital Gate based on the Rundetårn (Round Tower) he saw in Copenhagen Copenhagen ( or .; da, København ) is the capital and most populous city of Denmark, with a proper population of around 815.000 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematical model, models, and mathematics#Calculus and analysis, change. History One of the earliest known mathematicians were Thales of Miletus (c. 624–c.546 BC); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales' Theorem. The number of known mathematicians grew when Pythagoras of Samos (c. 582–c. 507 BC) established the Pythagoreans, Pythagorean School, whose doctrine it was that mathematics ruled the universe and whose motto was "All is number". It was the Pythagoreans who coined the term "mathematics", and with whom the study of mathemat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adam Olearius
Adam Olearius (born Adam Ölschläger or Oehlschlaeger, 24 September 159922 February 1671) was a German scholar, mathematician, geographer and librarian. He became secretary to the ambassador sent by Frederick III, Duke of Holstein-Gottorp, to the Shah of Safavid Persia (Iran), and published two books about the events and observations during his travels. Travels He was born at Aschersleben, near Magdeburg. After studying at Leipzig he became librarian and court mathematician to Frederick III, and in 1633 he was appointed secretary to the ambassadors Philipp Crusius, jurisconsult, and Otto Bruggemann, a merchant from Hamburg, sent by the duke to Muscovy and Persia in the hope of making arrangements by which his newly founded city of Friedrichstadt should become the terminus of an overland silk-trade. This embassy started from Gottorp on 22 October 1633 and travelled by Hamburg, Lübeck, Riga, Dorpat (five months' stay), Reval, Narva, Ladoga, and Novgorod to Moscow (14 August ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1717 Deaths
Events January–March * January 1 – Count Carl Gyllenborg, the Swedish ambassador to the Kingdom of Great Britain, is arrested in London over a plot to assist the Pretender to the British throne, James Francis Edward Stuart. * January 4 (December 24, 1716 Old Style) – Great Britain, France and the Dutch Republic sign the Triple Alliance, in an attempt to maintain the Treaty of Utrecht (1713), Britain having signed a preliminary alliance with France on November 28 (November 17) 1716. * February 1 – The Silent Sejm, in the Polish–Lithuanian Commonwealth, marks the beginning of the Russian Empire's increasing influence and control over the Commonwealth. * February 6 – Following the treaty between France and Britain, the Pretender James Stuart leaves France, and seeks refuge with Pope Clement XI. * February 26– March 6 – What becomes the northeastern United States is paralyzed by a series of blizzards that bury the region. * Mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1637 Births
Events January–March * January 5 – Pierre Corneille's tragicomedy '' Le Cid'' is first performed, in Paris, France. * January 16 – The siege of Nagpur ends in what is now the Maharashtra state of India, as Kok Shah, the King of Deogarh, surrenders his kingdom to the Mughal Empire. * January 23 – John Maurice, Prince of Nassau-Siegen arrives from the Netherlands to become the Governor of Dutch Brazil, and extends the range of the colony over the next six years. * January 28 – The Manchu armies of China complete their invasion of northern Korea with the surrender of King Injo of the Joseon Kingdom. * February 3 – Tulip mania collapses in the Dutch Republic. * February 15 – Ferdinand III becomes Holy Roman Emperor upon the death of his father, Ferdinand II, although his formal coronation does not take place until later in the year. * February 18 – Eighty Years' War – Battle off Lizard Point: Off the coast of C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
17th-century German Mathematicians
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 ke ... [...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] |
Copenhagen
Copenhagen ( or .; da, København ) is the capital and most populous city of Denmark, with a proper population of around 815.000 in the last quarter of 2022; and some 1.370,000 in the urban area; and the wider Copenhagen metropolitan area has 2,057,142 people. Copenhagen is on the islands of Zealand and Amager, separated from Malmö, Sweden, by the Øresund strait. The Øresund Bridge connects the two cities by rail and road. Originally a Vikings, Viking fishing village established in the 10th century in the vicinity of what is now Gammel Strand, Copenhagen became the capital of Denmark in the early 15th century. Beginning in the 17th century, it consolidated its position as a regional centre of power with its institutions, defences, and armed forces. During the Renaissance the city served as the de facto capital of the Kalmar Union, being the seat of monarchy, governing the majority of the present day Nordic countries, Nordic region in a personal union with Sweden and N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rundetårn
The Round Tower ( Danish: Rundetårn) is a 17th-century tower in Copenhagen, Denmark, one of the many architectural projects of Christian IV of Denmark. Built as an astronomical observatory, it is noted for its equestrian staircase, a 7.5-turn helical corridor leading to the platform at the top (34.8 meters above ground), and its views over Copenhagen. The tower is part of the ''Trinitatis Complex'' which also includes a chapel, the Trinitatis Church, and an academic library, which were the first facilities of the Copenhagen University Library founded in 1482. History Background Astronomy had grown in importance in 17th-century Europe. Countries had begun competing with each other in establishing colonies, creating a need for accurate navigation across the oceans. Many national observatories were therefore established, the first in 1632 at Leiden in the Dutch Republic. Only five years later the Round Tower Observatory, first referred to as STELLÆBURGI REGII HAUNIENSIS, woul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rasmus Bartholin
Rasmus Bartholin (; Latinized: ''Erasmus Bartholinus''; 13 August 1625 – 4 November 1698) was a Danish physician and grammarian. Biography Bartholin was born in Roskilde. He was the son of Caspar Bartholin the Elder (1585–1629) and Anna Fincke, daughter of the mathematician Thomas Fincke. As part of his studies, he travelled in Europe for ten years. He stayed in the Netherlands, England, France and Italy. In 1647, he took a Master's degree at the University of Copenhagen. In 1654, he received a Doctoral degree at the University of Padua. He was a professor at the University of Copenhagen, first in Geometry, later in Medicine. He was also dean of the faculty of medicine, librarian, and rector. He wrote, in Latin, the first grammar of the Danish language, the 1657 ''De studio lingvæ danicæ''. Rasmus Bartholin is remembered especially for his discovery (1669) of the double refraction of a light ray by Iceland spar (calcite). He published an accurate description of the ... [...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, moons, comets and galaxies – in either observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, solar astronomy, the origin or evolution of stars, or the 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 and theoretical. Observational astronomers make direct observations of celestial objects and analyze the data. In contrast, theoretical astronomers create and investigate models of things that cannot be observed. Because it takes millions to billions of years for a system of stars or a galaxy to complete a life cycle, astronomers must observe snapsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henrik Ruse
Henrik Ruse, Baron of Rysensteen (né Henrik Ruse 9 April 162422 February 1679) was a Dutch officer and fortification engineer. Following a period when he served in various armies in Germany and Italy, he wrote a well-researched book documenting the latest trends in fortification systems across Europe.Ruse's book ''Versterckte Vesting'' written in 1654 (see Bibliography) contains a short autobiography giving details of his early life. As a result, he was entrusted with commissions for improving defences in his native Amsterdam, in Germany, and finally in Denmark and Norway where, benefitting from the support of the monarchy, he first became a general and later a baron. Ruse died in Sauwerd near Groningen in the Netherlands. Early life and education Ruse was born in the village of Ruinen in the Dutch province of Drenthe. His father, Johan Ruse, who was the parish priest in Ruinen, belonged to a Huguenot family from eastern France, sympathising with the Protestant theologian J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andreas Concius
Andreas ( el, Ἀνδρέας) is a name usually given to males in Austria, Greece, Cyprus, Denmark, Armenia, Estonia, Ethiopia, Eritrea, Finland, Flanders, Germany, Norway, Sweden, Switzerland, Romania, the Netherlands, and Indonesia. The name derives from the Greek noun ἀνήρ ''anēr'', with genitive ἀνδρός ''andros'', which means "man". See the article on ''Andrew'' for more information. The Scandinavian name is earliest attested as antreos in a runestone from the 12th century. The name Andrea may be used as a feminine form, but is instead the main masculine form in Italy and the canton of Ticino in Switzerland. Given name Andreas is a common name, and this is not a comprehensive list of articles on people named Andreas. See instead . Surname * Alfred T. Andreas, American publisher and historian * Casper Andreas (born 1972), American actor and film director * Dwayne Andreas, a businessman * Harry Andreas * Lisa Andreas Places *Andreas, Isle of Man, a village a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
