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Rundetaarn
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, would f ...
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Rundetarn Observatory Illustrated By Johann Doppelmayr
The Round Tower (Danish language, 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 HAUN ...
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Regensen
Regensen (original Latin name: ''Collegium Domus Regiæ'', English: ''The College of the Royal House'') is a residential college for students at the University of Copenhagen and Technical University of Denmark (DTU). It is situated in the heart of the old city, right next to the Rundetårn (the Round Tower). History Commissioned by King Christian IV and inaugurated by Royal Charter by on 1 July 1623, Regensen has for centuries provided a unique living and working environment for 100 students. Some of the buildings burned down along with the rest city in the Great Fire of Copenhagen in 1728, but was rebuilt the same year. Regensen's mission is to provide housing to talented yet non-privileged students at the University of Copenhagen (KU) and the Technical University of Denmark (DTU). Until the 1980s, the foundation behind Regensen, Kommunitetet, provided free housing and a scholarship for students chosen for admission. Because of financial difficulties, a small fee was introduce ...
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Hafnia Hodierna Tab XC Rundetaarn
Hafnia may refer to: * Copenhagen (of which it is the Latin name) * ''Hafnia'' (bacterium) * Hafnium(IV) oxide Hafnium(IV) oxide is the inorganic compound with the formula . Also known as hafnium dioxide or hafnia, this colourless solid is one of the most common and stable compounds of hafnium. It is an electrical insulator with a band gap of 5.3~5.7 eV ... See also

* * {{Disambiguation ...
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Peter The Great
Peter I ( – ), most commonly known as Peter the Great,) or Pyotr Alekséyevich ( rus, Пётр Алексе́евич, p=ˈpʲɵtr ɐlʲɪˈksʲejɪvʲɪtɕ, , group=pron was a Russian monarch who ruled the Tsardom of Russia from to 1721 and subsequently the Russian Empire until his death in 1725, jointly ruling with his elder half-brother, Ivan V until 1696. He is primarily credited with the modernisation of the country, transforming it into a European power. Through a number of successful wars, he captured ports at Azov and the Baltic Sea, laying the groundwork for the Imperial Russian Navy, ending uncontested Swedish supremacy in the Baltic and beginning the Tsardom's expansion into a much larger empire that became a major European power. He led a cultural revolution that replaced some of the traditionalist and medieval social and political systems with ones that were modern, scientific, Westernised and based on the Enlightenment. Peter's reforms had a lasting ...
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Christian Hansen (architect)
Hans Christian Hansen (20 April 1803 – 2 May 1883) was a Historicist Danish architect who worked 18 years in Greece where he was active in the transformation of Athens from a small town to the country's capital and an international metropolis. Later in his career he returned to Denmark, where he became a professor at the Royal Danish Academy of Fine Arts and designed buildings such as the Copenhagen Municipal Hospital and the Østervold Observatory. He was the brother of Theophilus Hansen who was also an internationally successful architect, active in Athens and Vienna. He is considered to be a pioneer in the study and application of polychrome architecture. Biography Early life and career Christian Hansen was born in Copenhagen. He attended the Royal Danish Academy of Fine Arts in Copenhagen from 1816, just 13 years old, where he studied under Christian Frederik Hansen, the leading Danish architect of the time, and Gustav Friedrich Hetsch. Christian Frederik Hansen taught h ...
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Fortifications Of Copenhagen (17th Century)
The fortifications of Copenhagen underwent a comprehensive modernization and expansion in the 17th century. The project was commenced and was largely the masterplan of Christian IV in the early 17th century but was continued and completed by his successors. The new fortifications relied on the existing, medieval fortifications of the city but the fortified area was extended and a defensive ring around the city completed particularly with new edifices facing the sea. The ring fortification consisted of four bastioned ramparts and an annexed citadel as well as various outworks. Though largely developed to a final form in the 17th century, the fortifications remained in use until the second half of the 19th century, when they finally, a long time overdue, were decommissioned. Today only the Christianshavn Rampart and the citadel Kastellet remain intact, while the rest of the fortifications were dismantled in the years after its demise. The grounds were to a large extent laid out as ...
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Østervold Observatory
Østervold Observatory (or Copenhagen University Observatory; da, Københavns Universitet Astronomisk Observatorium) is a former astronomical observatory (IAU code 035) in Copenhagen, Denmark owned and operated by the University of Copenhagen (Københavns Universitet). It opened in 1861 as a replacement for the University's old observatory at Rundetårn. History The first astronomical observatory operated by the University of Copenhagen was Rundetårn. It had been inaugurated in 1642 as a replacement for Tycho Brahe's Stjerneborg, but during the early 19th century had become outdated as astronomical instruments grew bigger and bigger while the tower could not be expanded. In the same time, light pollution from the surrounding city as well as vibrations caused by the still increasing traffic in the streets below had made the observations inaccurate. In 1861 the observatory was moved to Østervold, where a new observatory was constructed on the old bastioned fortifications of ...
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Light Pollution
Light pollution is the presence of unwanted, inappropriate, or excessive use of artificial Visible spectrum, lighting. In a descriptive sense, the term ''light pollution'' refers to the effects of any poorly implemented lighting, during the day or night. Light pollution can be understood not only as a phenomenon resulting from a specific source or kind of pollution, but also as a contributor to the wider, collective impact of various sources of pollution. Although this type of pollution can exist throughout the day, its effects are magnified during the night with the contrast of darkness. It has been estimated that 83 percent of the world's people live under light-polluted skies and that 23 percent of the world's land area is affected by skyglow. The area affected by artificial illumination continues to increase. A major side-effect of urbanization, light pollution is blamed for compromising health, disrupting ecosystems, and spoiling aesthetic environments. Globally, it has incr ...
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Anton Rosen - Relocation Of Rundetårn
Anton may refer to: People * Anton (given name), including a list of people with the given name * Anton (surname) Places * Anton Municipality, Bulgaria ** Anton, Sofia Province, a village * Antón District, Panama ** Antón, a town and capital of the district * Anton, Colorado, an unincorporated town * Anton, Texas, a city * Anton, Wisconsin, an unincorporated community *River Anton, Hampshire, United Kingdom Other uses * Case Anton, codename for the German and Italian occupation of Vichy France in 1942 * Anton (computer), a highly parallel supercomputer for molecular dynamics simulations * ''Anton'' (1973 film), a Norwegian film * ''Anton'' (2008 film), an Irish film *Anton Cup The Anton Cup is the championship trophy of the Swedish junior hockey league, J20 SuperElit. The trophy was donated by Anton Johansson, chairman of the Swedish Ice Hockey Association between 1924 and 1948, in 1952, as an award for Sweden's top-ra ...
, the championship trophy of the Swedish ju ...
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Copenhagen Fire Of 1728
The Copenhagen Fire of 1728 was the largest fire in the history of Copenhagen, Denmark. It began on the evening of 20 October 1728 and continued to burn until the morning of 23 October. It destroyed approximately 28% of the city (measured by counting the number of destroyed lots from the cadastre) and left 20% of the population homeless. The reconstruction lasted until 1737. No less than 47% of the section of the city, which dates back to the Middle Ages, was completely lost, and along with the Copenhagen Fire of 1795, it is the main reason that few traces of medieval Copenhagen can be found in the modern city. Although the number of dead and wounded was relatively low compared to the extent of the fire, the cultural losses were huge. In addition to several private book collections, 35,000 texts including a large number of unique works were lost with the University of Copenhagen library, and at the observatory on top of Rundetårn, instruments and records made by Tycho Brahe and ...
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Leonhard Blasius
Leonhard Blasius (also spelled Lennart, Leinert, Lineest) (died 8 December 1644) was a Danish architect in the service of King Christian IV. Biography Blasius, who was certainly a Dutchman, probably arrived in Denmark from the Netherlands where he first worked in Glückstadt, Holstein, in the 1630s. He was called to Copenhagen in 1642 where he became a master builder, taking over the responsibilities of Hans van Steenwinckel the Younger."Leonhard Blasius"
''Dansk Biografisk Leksikon''. Retrieved 29 December 2012.
As royal architect to Christian IV, Blasius was credited for major building works, mainly churches, which were carried out by the king. He managed the construction of St. Anna Rotunda and in 1641 commenced the expansion of the