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Caspar Wessel
Caspar Wessel (8 June 1745, Vestby – 25 March 1818, Copenhagen) was a Danish– Norwegian mathematician and cartographer. In 1799, Wessel was the first person to describe the geometrical interpretation of complex numbers as points in the complex plane and vectors. Biography Wessel was born in Jonsrud, Vestby, Akershus in Norway to pastor Jonas Wessel (1707 - 85) and Helene Marie Schumacher (1715 - 89). Helene came from Drammen and was of Griffenfeldts heritage. Growing up in Wesselstuen in Vestby he was one of thirteen children in a family. His brothers include Johan Herman Wessel and Ole Christopher Wessel. Wessel is the grandnephew of the nobleman Peter Tordenskjold, brother in law of Maren Juel and the great-great-great-grandfather to the famous radio engineer Jan Wessel. In 1763, having completed secondary school at Oslo Cathedral School, he went to Denmark for further studies. He attended the University of Copenhagen to study law, but due to financial pressures, c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vestby
Vestby is a municipality in former Akershus now Viken county, Norway. It is part of the Follo traditional region. The administrative centre of the municipality is the village of Vestby. General information Name The municipality (originally the parish) is named after the old ''Vestby'' farm (Old Norse: ''Vestbýr''), since the first church was built here. The first element is ''vestr'' which means "west" and the last element is ''býr'' meaning "farm". The neighbouring farms have the names ''Østby'' ("eastern farm"), ''Sunnby'' ("southern farm"), and ''Nordby'' ("northern farm"); and they must all four be the parts of a bigger and older farm, whose name is now unknown. Coat-of-arms The coat-of-arms is from modern times. They were granted on 18 June 1982 and designed by Bjørn Linnestad. The arms show three gold bottony crosses on a red background, two over one. They represent the three original parishes in the municipality: Vestby, Garder, and Såner. At the same time t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drammen
Drammen () is a city and municipality in Viken, Norway. The port and river city of Drammen is centrally located in the south-eastern and most populated part of Norway. Drammen municipality also includes smaller towns and villages such as Konnerud, Svelvik, Mjøndalen and Skoger. Location Drammen is located west of the Oslofjord and is situated approximately 44 km South-west of Oslo. There are more than 101 000 inhabitants in the municipality, but the city is the regional capital of an area with 82 000 inhabitants. Drammen and the surrounding communities are growing more than ever before. The city makes good use of the river and inland waterway called Drammensfjord, both for recreation, activities and housing. Name and coat of arms The Old Norse form of the city's name was ''Drafn'', and this was originally the name of the inner part of Drammensfjord. The fjord is, however, probably named after the river Drammenselva (Norse ''Drǫfn''), and this again is derived from ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Friedrich Gauss
Johann Carl Friedrich Gauss (; german: Gauß ; la, Carolus Fridericus Gauss; 30 April 177723 February 1855) was a German mathematician and physicist who made significant contributions to many fields in mathematics and science. Sometimes referred to as the ''Princeps mathematicorum'' () and "the greatest mathematician since antiquity", Gauss had an exceptional influence in many fields of mathematics and science, and he is ranked among history's most influential mathematicians. Also available at Retrieved 23 February 2014. Comprehensive biographical article. Biography Early years Johann Carl Friedrich Gauss was born on 30 April 1777 in Brunswick (Braunschweig), in the Duchy of Brunswick-Wolfenbüttel (now part of Lower Saxony, Germany), to poor, working-class parents. His mother was illiterate and never recorded the date of his birth, remembering only that he had been born on a Wednesday, eight days before the Feast of the Ascension (which occurs 39 days after Easter). Ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-Robert Argand
Jean-Robert Argand (, , ; July 18, 1768 – August 13, 1822) was an amateur mathematician. In 1806, while managing a bookstore in Paris, he published the idea of geometrical interpretation of complex numbers known as the Argand diagram and is known for the first rigorous proof of the Fundamental Theorem of Algebra. Life Jean-Robert Argand was born in Geneva, then Republic of Geneva, to Jacques Argand and Eve Carnac. His background and education are mostly unknown. Since his knowledge of mathematics was self-taught and he did not belong to any mathematical organizations, he likely pursued mathematics as a hobby rather than a profession. Argand moved to Paris in 1806 with his family and, when managing a bookshop there, privately published his ''Essai sur une manière de représenter les quantités imaginaires dans les constructions géométriques'' (Essay on a method of representing imaginary quantities). In 1813, it was republished in the French journal ''Annales de Mathématiq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Complex Number
In mathematics, a complex number is an element of a number system that extends the real numbers with a specific element denoted , called the imaginary unit and satisfying the equation i^= -1; every complex number can be expressed in the form a + bi, where and are real numbers. Because no real number satisfies the above equation, was called an imaginary number by René Descartes. For the complex number a+bi, is called the , and is called the . The set of complex numbers is denoted by either of the symbols \mathbb C or . Despite the historical nomenclature "imaginary", complex numbers are regarded in the mathematical sciences as just as "real" as the real numbers and are fundamental in many aspects of the scientific description of the natural world. Complex numbers allow solutions to all polynomial equations, even those that have no solutions in real numbers. More precisely, the fundamental theorem of algebra asserts that every non-constant polynomial equation with rea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Candidatus Juris
Candidate (Latin ''candidatus'' or ''candidata'') is the name of various academic degrees, chiefly in Scandinavia, the Soviet Union, the Netherlands and Belgium. In Scandinavia, it is a higher professional-level degree usually corresponding to 5–7 years of studies, whereas in the Soviet states, it was a research degree roughly equivalent to the American Doctor of Philosophy degree. In the Netherlands and Belgium, it was an undergraduate first-cycle degree roughly comparable with the bachelor's degree. The term is derived from Latin ''candida'', meaning white. In Ancient Rome, men running for political office would usually wear togas chalked and bleached to be bright white at speeches, debates, conventions, and other public functions. The term ''candidate'' thus came to mean someone who seeks an office of some sort. Scandinavia In Scandinavia, the term was introduced in the early 18th century and referred to the higher degrees in theology, law and medicine. A candidate's degree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cartographer
Cartography (; from grc, χάρτης , "papyrus, sheet of paper, map"; and , "write") is the study and practice of making and using maps. Combining science, aesthetics and technique, cartography builds on the premise that reality (or an imagined reality) can be modeled in ways that communicate spatial information effectively. The fundamental objectives of traditional cartography are to: * Set the map's agenda and select traits of the object to be mapped. This is the concern of map editing. Traits may be physical, such as roads or land masses, or may be abstract, such as toponyms or political boundaries. * Represent the terrain of the mapped object on flat media. This is the concern of map projections. * Eliminate characteristics of the mapped object that are not relevant to the map's purpose. This is the concern of generalization. * Reduce the complexity of the characteristics that will be mapped. This is also the concern of generalization. * Orchestrate the elements of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Danish Academy Of Sciences And Letters
{{Infobox organization , name = The Royal Danish Academy of Sciences and Letters , full_name = , native_name = Det Kongelige Danske Videnskabernes Selskab , native_name_lang = , logo = Royal Danish Academy of Sciences and Letters seal.svg , logo_size = 150 , logo_alt = , logo_caption = , image = Carlsbergfondet.JPG , image_size = , alt = , caption = The building on H.C. Andersens Boulevard. , map = , map_size = , map_alt = , map_caption = , map2 = , map2_size = , map2_alt = , map2_caption = , abbreviation = , nickname = , pronounce = , pronounce ref = , pronounce comment = , pronounce 2 = , named_after = , motto = , predecessor = , merged ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surveying
Surveying or land surveying is the technique, profession, art, and science of determining the terrestrial two-dimensional or three-dimensional positions of points and the distances and angles between them. A land surveying professional is called a land surveyor. These points are usually on the surface of the Earth, and they are often used to establish maps and boundaries for ownership, locations, such as the designed positions of structural components for construction or the surface location of subsurface features, or other purposes required by government or civil law, such as property sales. Surveyors work with elements of geodesy, geometry, trigonometry, regression analysis, physics, engineering, metrology, programming languages, and the law. They use equipment, such as total stations, robotic total stations, theodolites, GNSS receivers, retroreflectors, 3D scanners, LiDAR sensors, radios, inclinometer, handheld tablets, optical and digital levels, subsurface locat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oslo Cathedral School
Schola Osloensis, known in Norwegian as Oslo Katedralskole (''Oslo Cathedral School'') and more commonly as "Katta",Oslo katedralskole , About the school is a selective located in , . The school offers the college preparatory (literal translation: ''specialization for studies'') of the Norwegian school system. Oslo Cathedral School is one of four schools in Norway that can trace its origins directly to the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jan Wessel
Jan Wessel (16 November 1903 – 12 August 1980) was a Norwegian radio engineer, known for having established and operated the Norwegian production company Radionette. The company was the first in Norway to start production of radios for connection to the electrical grid. Biography Wessel was born in Christiania (now Oslo) to operations engineer Henrik Lysholm Wessel (1861–1936) and Sophie Friederike (“Frieda”) Eleonore Weidemann Goebel (1868–1959). He is Great-great-great-grandson of Johan Herman Wessel (1742–85), Ole Christopher Wessel (1744–94) and Caspar Wessel (1745–1818). Jan Wessel was one of the many self-taught enthusiasts who participated in the pioneering phase of the spread of radio technology in Norway. He stood out early by focusing fully on a commercial utilization of the technology through the design, production and sale of radios to a wide audience, from 1927 through the company Radionette, which grew to become one of the three major radio fac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maren Juel
Maren Juel (18 March 1749 – 20 February 1815) was a Norwegian landowner, regarded as the wealthiest woman in Norway at her time. She was born in Christiania (now Oslo) as the daughter of timber trader and civil servant Hans Juel (1702–1765). She was the sister of timber trader, Jacob Juel. In 1771 she was married to businessman and landowner Peder Holter (1723 - 1786). He had accumulated a number of estates and was regarded for his time to be one of the most wealthy men in the country. After her husband's death in 1786, she managed the properties herself. These included Losby in Lørenskog as well as the estates Hafslund and Borregaard in Sarpsborg and the Ljan Estate (''Ljansbruket'') which included Stubljan in Nordstrand and Hvitebjørn in Oppegård. In 1791 she married civil servant Ole Christopher Wessel who died in 1794. In 1796 Juel married Marcus Gjøe Rosenkrantz Marcus Gjøe Rosenkrantz (25 January 176211 May 1838) was a Norwegian Government Minister ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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