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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] |
Adler (cars And Motorcycle)
Adler was a German automobile and motorcycle manufacturer from 1900 until 1957. The'' 'Adler' '' name is German for 'eagle'. History The Adler factory produced bicycles, typewriters, motorcycles and calculators in addition to cars. Before World War I, the company used de Dion-Bouton, De Dion two- and four-cylinder (engine), cylinder engines in cars that ranged from 1032 cc to 9081 cc; beginning in 1902 (the year Edmund Rumpler became technical director), they used their own engines as well. These cars, driven by Erwin Kleyer and Otto Kleyer (sons of the company founder Heinrich Kleyer) and by Alfred Theves won many sporting events. In the 1920s, Karl Irion raced many Adlers; popular models of the period included the 2298 cc, 1550 cc, and 4700 cc four-cylinders and the 2580 cc six-cylinders. A few of the Standard models, built between 1927 and 1934, featured Walter Gropius, Gropius-designed coachwork. The Adler Standard 6, which entered volume production in 1927, had a 2540 cc or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borgarsyssel Museum
The Borgarsyssel Museum is a museum located at Sarpsborg in Viken county, Norway. The museum was named after ''Borgarsysla'', the Old Norse name of Østfold county. It was founded in 1921 and documents Østfold's cultural history from the Middle Ages. The open-air collection includes about twenty historic buildings. It is located at the site of the ruins of the Medieval St. Nicholas's Church, which was built during the reign of King Øystein Øystein is a Norwegian given name of Old Norse origins. One of its variants is Östen which is mostly used in Sweden. Notable people with the name include: * Øystein Aarseth (1968–1993), Norwegian guitarist (pseudonym Euronymous), co-founder ... (1103–1123). Olaf's Chapel was built at the Borgarsyssel Museum as an exhibition hall for the Saint Olaf Jubilee (''Olavsjubileet'') in 1930. Since 1947, the Borgarsyssel Museum has been the main county museum of Østfold. Since 1 January 2006 it has been a part of the Østfold Museum (''à ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Julian Calendar
The Julian calendar, proposed by Roman consul Julius Caesar in 46 BC, was a reform of the Roman calendar. It took effect on , by edict. It was designed with the aid of Greek mathematicians and astronomers such as Sosigenes of Alexandria. The calendar became the predominant calendar in the Roman Empire and subsequently most of the Western world for more than 1,600 years until 1582, when Pope Gregory XIII promulgated a minor modification to reduce the average length of the year from 365.25 days to 365.2425 days and thus corrected the Julian calendar's drift against the solar year. Worldwide adoption of this revised calendar, which became known as the Gregorian calendar, took place over the subsequent centuries, first in Catholic countries and subsequently in Protestant countries of the Western Christian world. The Julian calendar is still used in parts of the Eastern Orthodox Church and in parts of Oriental Orthodoxy as well as by the Berbers. The Julian calenda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gregorian Calendar
The Gregorian calendar is the calendar used in most parts of the world. It was introduced in October 1582 by Pope Gregory XIII as a modification of, and replacement for, the Julian calendar. The principal change was to space leap years differently so as to make the average calendar year 365.2425 days long, more closely approximating the 365.2422-day 'tropical' or 'solar' year that is determined by the Earth's revolution around the Sun. The rule for leap years is: There were two reasons to establish the Gregorian calendar. First, the Julian calendar assumed incorrectly that the average solar year is exactly 365.25 days long, an overestimate of a little under one day per century, and thus has a leap year every four years without exception. The Gregorian reform shortened the average (calendar) year by 0.0075 days to stop the drift of the calendar with respect to the equinoxes.See Wikisource English translation of the (Latin) 1582 papal bull '' Inter gravissimas''. Second, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reflecting Telescope
A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented in the 17th century by Isaac Newton as an alternative to the refracting telescope which, at that time, was a design that suffered from severe chromatic aberration. Although reflecting telescopes produce other types of optical aberrations, it is a design that allows for very large diameter objectives. Almost all of the major telescopes used in astronomy research are reflectors. Many variant forms are in use and some employ extra optical elements to improve image quality or place the image in a mechanically advantageous position. Since reflecting telescopes use mirrors, the design is sometimes referred to as a catoptrics, catoptric telescope. From the time of Newton to the 1800s, the mirror itself was made of metal usually speculum metal. This type included Newton's first designs and eve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouse
A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and has become uneconomical since the advent of much cheaper, more sophisticated and effective electronic navigational systems. History Ancient lighthouses Before the development of clearly defined ports, mariners were guided by fires built on hilltops. Since elevating the fire would improve the visibility, placing the fire on a platform became a practice that led to the development of the lighthouse. In antiquity, the lighthouse functioned more as an entrance marker to ports than as a warning signal for reefs a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Model Railway
Railway modelling (UK, Australia, New Zealand, and Ireland) or model railroading (US and Canada) is a hobby in which rail transport systems are modelled at a reduced scale. The scale models include locomotives, rolling stock, streetcars, tracks, signalling, cranes, and landscapes including: countryside, roads, bridges, buildings, vehicles, harbors, urban landscape, model figures, lights, and features such as rivers, hills, tunnels, and canyons. The earliest model railways were the 'carpet railways' in the 1840s. The first documented model railway was the Railway of the Prince Imperial (French: Chemin de fer du Prince impérial) built in 1859 by emperor Napoleon III for his then 3-year-old son, also Napoleon, in the grounds of the Château de Saint-Cloud in Paris. It was powered by clockwork and ran in a figure-of-eight. Electric trains appeared around the start of the 20th century, but these were crude likenesses. Model trains today are more realistic, in addition to bein ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norwegian Museum Of Science And Technology
The Norwegian Museum of Science and Technology ( no, Norsk Teknisk Museum) is located in Oslo, Norway. The museum is an anchor point on the European Route of Industrial Heritage. History The museum as an institution was founded in 1914 as a part of the commemoration for the 100th anniversary of the Norwegian Constitution, but it was not until 1932 that the museum was first opened, in the basement of the Viking Ship Museum in Bygdøy. In 1959 the museum relocated to Etterstad. Today's museum building at Kjelsås in Nordre Aker was designed by architect Rolf Ramm Østgaard and was officially opened in May 1986. Collections The museum is an educational institution with collections, exhibitions, publications and other activities. The museum's objective is to demonstrate the implications of progress in science, technology, industry and medicine, socially and culturally, through the ages. Through its collections and exhibits the museum chronicles the development of Norway from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Depression
The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The economic contagion began around September and led to the Wall Street stock market crash of October 24 (Black Thursday). It was the longest, deepest, and most widespread depression of the 20th century. Between 1929 and 1932, worldwide gross domestic product (GDP) fell by an estimated 15%. By comparison, worldwide GDP fell by less than 1% from 2008 to 2009 during the Great Recession. Some economies started to recover by the mid-1930s. However, in many countries, the negative effects of the Great Depression lasted until the beginning of World War II. Devastating effects were seen in both rich and poor countries with falling personal income, prices, tax revenues, and profits. International trade fell by more than 50%, unemployment in the U.S. rose to 23% and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norwegian Broadcasting Corporation
NRK, an abbreviation of the Norwegian ''Norsk Rikskringkasting AS'', generally expressed in English as the Norwegian Broadcasting Corporation, is the Norwegian government-owned radio and television public broadcasting company, and the largest media organisation in Norway. All other TV channels, broadcast from Norway, were banned between 1960 and 1981. NRK broadcasts three national TV channels and thirteen national radio channels on digital terrestrial television, digital terrestrial radio and subscription television. All NRK radio stations are streamed online at NRK.no, which also offers an extensive TV service. NRK is a founding member of the European Broadcasting Union. Financing Until the start of 2020, about 94% of NRK's funding came from a mandatory annual licence fee payable by anyone who owns or uses a TV or device capable of receiving TV broadcasts. The remainder came from commercial activities such as programme and DVD sales, spin-off products, and certain types of s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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