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Jens Olsen's World Clock
Jens Olsen's World Clock or Verdensur is an advanced astronomical clock which is displayed in Copenhagen City Hall. The clock was designed and calculated by Jens Olsen (1872–1945), who was a skilled locksmith, and later learned the trade of clockmaking. He also took part in the beginning of the clock's construction, and died in 1945, 10 years before the clock was completed. The clock consists of 12 movements which together have 15,448 parts. The clock is mechanical and must be wound once a week. Displays include lunar and solar eclipses, positions of the stellar bodies, and a perpetual calendar, in addition to the time. The fastest gear completes a revolution every ten seconds and the slowest every 25,753 years. The calculations for the clock were made up until 1928, after which they were supervised by the astronomer Elis Strömgren. The drawings for the clock were made between 1934 and 1936, and the actual production of the clock took place from 1943 until 1955. The clo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jens Olsens Front
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Jens may refer to: * Jens (given name), a list of people with the name * Jens (surname), a list of people * Jens, Switzerland, a municipality * 1719 Jens, an asteroid See also * Jensen (other) * Jenssi Joensuu (; krl, Jovensuu; ) is a city and municipality in North Karelia, Finland, located on the northern shore of Lake Pyhäselkä (northern part of Lake Saimaa) at the mouth of the Pielinen River (''Pielisjoki''). It was founded in 1848. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axial Precession
In astronomy, axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis. In the absence of precession, the astronomical body's orbit would show axial parallelism. In particular, axial precession can refer to the gradual shift in the orientation of Earth's axis of rotation in a cycle of approximately 26,000 years.Hohenkerk, C.Y., Yallop, B.D., Smith, C.A., & Sinclair, A.T. "Celestial Reference Systems" in Seidelmann, P.K. (ed.) ''Explanatory Supplement to the Astronomical Almanac''. Sausalito: University Science Books. p. 99. This is similar to the precession of a spinning top, with the axis tracing out a pair of cones joined at their apices. The term "precession" typically refers only to this largest part of the motion; other changes in the alignment of Earth's axis—nutation and polar motion—are much smaller in magnitude. Earth's precession was historically called the precession of the equinoxes, because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures Completed In 1955
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artistic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tourist Attractions In Copenhagen
Tourism is travel for pleasure or business; also the theory and practice of touring, the business of attracting, accommodating, and entertaining tourists, and the business of operating tours. The World Tourism Organization defines tourism more generally, in terms which go "beyond the common perception of tourism as being limited to holiday activity only", as people "travelling to and staying in places outside their usual environment for not more than one consecutive year for leisure and not less than 24 hours, business and other purposes". Tourism can be domestic (within the traveller's own country) or international, and international tourism has both incoming and outgoing implications on a country's balance of payments. Tourism numbers declined as a result of a strong economic slowdown (the late-2000s recession) between the second half of 2008 and the end of 2009, and in consequence of the outbreak of the 2009 H1N1 influenza virus, but slowly recovered until the COVID-19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clocks In Denmark
A clock or a timepiece is a device used to measure and indicate time. The clock is one of the oldest human inventions, meeting the need to measure intervals of time shorter than the natural units such as the day, the lunar month and the year. Devices operating on several physical processes have been used over the millennia. Some predecessors to the modern clock may be considered as "clocks" that are based on movement in nature: A sundial shows the time by displaying the position of a shadow on a flat surface. There is a range of duration timers, a well-known example being the hourglass. Water clocks, along with the sundials, are possibly the oldest time-measuring instruments. A major advance occurred with the invention of the verge escapement, which made possible the first mechanical clocks around 1300 in Europe, which kept time with oscillating timekeepers like balance wheels., pp. 103–104., p. 31. Traditionally, in horology, the term ''clock'' was used for a striki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time In Astronomy
Theoretical astronomy is the use of analytical and computational models based on principles from physics and chemistry to describe and explain astronomical objects and astronomical phenomena. Theorists in astronomy endeavor to create theoretical models and from the results predict observational consequences of those models. The observation of a phenomenon predicted by a model allows astronomers to select between several alternate or conflicting models as the one best able to describe the phenomena. Ptolemy's ''Almagest'', although a brilliant treatise on theoretical astronomy combined with a practical handbook for computation, nevertheless includes compromises to reconcile discordant observations with a geocentric model. Modern theoretical astronomy is usually assumed to have begun with the work of Johannes Kepler (1571–1630), particularly with Kepler's laws. The history of the descriptive and theoretical aspects of the Solar System mostly spans from the late sixteenth century t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomical Clocks
An astronomical clock, horologium, or orloj is a clock with special mechanisms and dials to display astronomical information, such as the relative positions of the Sun, Moon, zodiacal constellations, and sometimes major planets. Definition The term is loosely used to refer to any clock that shows, in addition to the time of day, astronomical information. This could include the location of the Sun and Moon in the sky, the age and Lunar phases, the position of the Sun on the ecliptic and the current zodiac sign, the sidereal time, and other astronomical data such as the Moon's nodes (for indicating eclipses) or a rotating star map. The term should not be confused with ''astronomical regulator'', a high precision but otherwise ordinary pendulum clock used in observatories. Astronomical clocks usually represent the Solar System using the geocentric model. The center of the dial is often marked with a disc or sphere representing the Earth, located at the center of the Solar S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rasmus Sørnes
Rasmus Jonassen Sørnes (22 March 1893 – 15 February 1967), was a Norwegian inventor, clockmaker and radio technician, and is most famous for his advanced astronomical clocks, the most precise of which has an inaccuracy of 7 seconds during 1000 years. During his lifetime, Sørnes also designed and built a large variety of agricultural, radio-technical and mechanical devices, only a few of them patented. Early life and education Rasmus Sørnes was born in Sola in Norway on March 22, 1893 from a mediocre background, his parents were farmers with limited resources. He was the oldest of four brothers and one sister. His mother died shortly after the birth of the sister, and his father brought up the children by himself. According to his sister, he was already as a young boy very creative and industrious, at least when it came to his own ideas. He was less eager if he had to work with ideas from other, and it often happened that he skipped school for a day or two if he was working ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clock Of The Long Now
The Clock of the Long Now, also called the 10,000-year clock, is a mechanical clock under construction that is designed to keep time for 10,000 years. It is being built by the Long Now Foundation. A two-meter prototype is on display at the Science Museum in London. , two more prototypes are on display at The Long Now Museum & Store at Fort Mason Center in San Francisco. The project was conceived by Danny Hillis in 1986. The first prototype of the clock began working on December 31, 1999, just in time to display the transition to the year 2000. At midnight on New Year's Eve, the date indicator changed from 01999 to 02000, and the chime struck twice. The manufacture and site construction of the first full-scale prototype clock is being funded by Jeff Bezos's Bezos Expeditions, with $42 million, and is on land which Bezos owns in Texas. Purpose In the words of Stewart Brand, a founding board member of the foundation, "Such a clock, if sufficiently impressive and well-enginee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frederick IX Of Denmark
Frederick IX ( da, Christian Frederik Franz Michael Carl Valdemar Georg; 11 March 1899 – 14 January 1972) was List of Danish monarchs, King of Denmark from 1947 to 1972. Born into the House of Glücksburg, Frederick was the elder son of Christian X of Denmark, King Christian X and Alexandrine of Mecklenburg-Schwerin, Queen Alexandrine of Denmark. He became crown prince when his father succeeded as king in 1912. As a young man, he was educated at the Royal Danish Naval Academy. In 1935, he was married to Princess Ingrid of Sweden and they had three daughters, Margrethe II of Denmark, Margrethe, Princess Benedikte of Denmark, Benedikte and Queen Anne-Marie of Greece, Anne-Marie. During Denmark in World War II, Nazi Germany's occupation of Denmark, Frederick acted as regent on behalf of his father from 1942 until 1943. Frederick became king on his father's death in early 1947. During Frederick IX's reign Danish society changed rapidly, the welfare state was expanded and, as a c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dagbladet Arbejderen
''Dagbladet'' (lit.: ''The Daily Magazine'') is one of Norway's largest newspapers and is published in the tabloid format. It has 1,400,000 daily readers on mobile, web and paper. Traditionally ''Dagbladet'' is considered the main liberal newspaper of Norway, with a generally liberal progressive editorial outlook, to some extent associated with the movement of cultural radicalism in Scandinavian history. The paper edition had a circulation of 46,250 copies in 2016, down from a peak of 228,834 in 1994. The editor-in-chief is Alexandra Beverfjord, the political editor is Geir Ramnefjell, the news editor is Frode Hansen and the culture editor is Sigrid Hvidsten. ''Dagbladet'' is published six days a week and includes the additional feature magazine ''Magasinet'' every Saturday. Part of the daily tabloid is available at ''Dagbladet.no'', and more articles can be accessed through a paywall. The daily readership of ''Dagbladet''s online tabloid was 1.24 million in 2016. History '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elis Strömgren
Svante Elis Strömgren (31 May 1870 – 5 April 1947) was a Sweden, Swedish–Denmark, Danish astronomer. Strömgren was born in 1870 in Helsingborg, in the Skåne, Scania province of Sweden. He received his doctorate at Lund University in 1898, becoming docent there the same year. He worked at the University of Kiel from 1901, and assisted in the publication of Astronomische Nachrichten from 1901 to 1904. - Astrophysical Institute Potsdam. He became Professor of Astronomy and director of the Copenhagen Observatory of the University of Copenhagen in 1907. He died in Copenhagen in 1947. The minor planet 1422 Strömgrenia was named in his honour. Strömgren worked in a variety of fields but was particularly interested in theoretical astronomy and celestial mechani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
