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Bessel (other)
Bessel may refer to: Mathematics and science * Bessel beam * Bessel ellipsoid * Bessel function in mathematics * Bessel's inequality in mathematics * Bessel's correction in statistics * Bessel filter, a linear filter often used in audio crossover systems * Bessel transform, also known as Fourier-Bessel transform or Hankel transform * Bessel window, in signal processing * Besselian date, see Epoch (astronomy)#Besselian years Places * Bessel Fjord, NE Greenland * Bessel Fjord, NW Greenland * Bessel (crater), a small lunar crater People Surname * Friedrich Wilhelm Bessel (1784–1846), German mathematician, astronomer, and systematizer of the Bessel functions * Johann Franz Bessel (1672–1749), German Benedictine abbot and historian * Vasily Bessel (1843–1907), Russian music publisher Given name * Bessel Kok (born 1941), Dutch businessman and chess organiser * Bessel van der Kolk (born 1943), Dutch psychiatrist Other uses * 1552 Bessel, an asteroid * MV ''Bessel'', a German m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bessel Beam
Bessel may refer to: Mathematics and science * Bessel beam * Bessel ellipsoid * Bessel function in mathematics * Bessel's inequality in mathematics * Bessel's correction In statistics, Bessel's correction is the use of ''n'' − 1 instead of ''n'' in the formula for the sample variance and sample standard deviation, where ''n'' is the number of observations in a sample. This method corrects the bias in ... in statistics * Bessel filter, a linear filter often used in audio crossover systems * Bessel transform, also known as Fourier-Bessel transform or Hankel transform * Bessel window, in signal processing * Besselian date, see Epoch (astronomy)#Besselian years Places * Bessel Fjord, NE Greenland * Bessel Fjord, NW Greenland * Bessel (crater), a small lunar crater People Surname * Friedrich Wilhelm Bessel (1784–1846), German mathematician, astronomer, and systematizer of the Bessel functions * Johann Franz Bessel (1672–1749), German Benedictine abbot an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bessel Fjord, NW Greenland
Bessel Fjord () is a fjord in northwestern Greenland. Administratively it belongs to the Avannaata municipality. Knud Rasmussen described the fjord entrance in the following terms: Geography Bessel Fjord stretches roughly from north to south for about 60 km. It is a long and narrow fjord lined with high mountains rising steeply from the shore. Hannah Island, a small island, lies in the area of its mouth by the Kennedy Channel, Cape Bryan is on the western side of the mouth and Cape Maynard on the northeastern.''Prostar Sailing Directions 2005 Greenland and Iceland Enroute,'' p. 93 This fjord is located northeast of Washington Land, at the northern end of Daugaard-Jensen Land. The Petermann Peninsula forms its eastern shore. There are large ice caps on both landmasses flanking the fjord. Bibliography *H.P. Trettin (ed.), ''Geology of the Innuitian Orogen and Arctic Platform of Canada and Greenland''. Geological Survey of Canada (1991) See also *List of fjords of Green ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1552 Bessel
1552 Bessel, provisional designation , is a stony Eoan asteroid from the outer regions of the asteroid belt, approximately 18 kilometers in diameter. It was discovered on 24 February 1938, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, and named after German astronomer Friedrich Bessel. Orbit and classification ''Bessel'' is a stony asteroid and a member of the Eos family that orbits the Sun in the outer main-belt at a distance of 2.7–3.3 AU once every 5 years and 3 months (1,909 days). Its orbit has an eccentricity of 0.10 and an inclination of 10 ° with respect to the ecliptic. First observed as at Heidelberg in 1933, the body's observation arc begins at Turku, 5 days prior to its official discovery observation. Naming This minor planet was named after German astronomer Friedrich Wilhelm Bessel (1789–1846), who measured the first stellar parallax in 1838. His measured parallax of 0.314 arcseconds for 61 Cygni gave a distance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bessel Van Der Kolk
Bessel van der Kolk (; born July 1943) is a Boston-based Dutch-American psychiatrist, author, researcher and educator. Since the 1970s his research has been in the area of post-traumatic stress. He is the author of four books, including ''The New York Times'' best seller, '' The Body Keeps the Score'', which was translated into 43 languages. Scientists have criticized the book for promoting pseudoscientific claims about trauma, memory, the brain, and development. Van der Kolk served as president of the International Society for Traumatic Stress Studies and is a former co-director of the National Child Traumatic Stress Network. He is a professor of psychiatry at Boston University School of Medicine and president of the Trauma Research Foundation in Brookline, Massachusetts. Early life and education Van der Kolk was born in the Netherlands in July 1943. The Hague was occupied by the Nazis at the time and his father was sent to a work-camp. He was the middle child of five. His mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bessel Kok
Bessel Kok (born 13 December 1941 in Hilversum, Netherlands) is a Dutch businessman and chess organiser living in Prague. He has served in top management positions in telecommunications companies in Belgium ( Belgacom) and in the Czech Republic. He was also President of the Belgian-based Banking communications company SWIFT and responsible for SWIFT's sponsorship of several major International chess events. Kok was the Chairman of World Chess Grandmaster Association from 1985 until 1991, and helped to establish the 2002 Prague Agreement concerning the World Chess Championship. Kok is also active in the arts. He was the producer of the film '' The Power of Good: Nicholas Winton'' about British businessman Nicholas Winton who rescued children from the Nazis. The film won an Emmy Award in 2002. Kok ran a campaign for presidency of the World Chess Federation against the incumbent Kirsan Ilyumzhinov in 2006. The election was held in June 2006, in Torino, Italy during the World Chess O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vasily Bessel
Vasily Vasil’yevich Bessel ( April 25 S April 13 1843 (1842?) St Petersburg – March 1, S February 161907, Zurich) was a Russian music publisher. Bessel graduated from the Saint Petersburg Conservatory in 1865 studying violin with Henryk Wieniawski and viola with Hieronymus Weickmann. He co-founded the thriving publishing firm V. Bessel and Co. (since 1869) and a print shop (since 1871), which published works by prominent Russian composers, notably Pyotr Tchaikovsky, Anton Rubinstein, Alexander Dargomyzhsky and the members of the New Russian Musical School— Modest Musorgsky, Nikolay Rimsky-Korsakov, César Cui, Mily Balakirev, and Alexander Borodin Alexander Porfiryevich Borodin (12 November 183327 February 1887) was a Russian Romantic composer and chemist of Georgian–Russian parentage. He was one of the prominent 19th-century composers known as " The Five", a group dedicated to prod .... He was the journal’s publisher and also the sole editor of a weekly St ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Franz Bessel
Johann Franz Bessel (in religion Gottfried; 5 September 1672, at Buchen, in the Grand Duchy of Baden – 22 January 1749 at Göttweig) was a German Benedictine abbot and historian. Life He made his course in the humanities at Aschaffenburg, Würzburg, and Bamberg, and in 1690 entered the University of Salzburg, conducted by the Benedictines, where he specialized in philosophy, also attending lectures on theology and jurisprudence. He entered the Benedictine Order at Göttweig on the Danube, Lower Austria, 15 June 1692. After making his vows (21 June 1693), he completed his theological course at Vienna, was ordained (21 March 1696), and on 23 May was granted the degree of Doctor of Theology, being shortly afterwards appointed Lector in philosophy and theology in the monastery of Seligenstadt on the River Main. In 1699 he was summoned to the electoral court of Mainz by Archbishop Lothar Franz von Schönborn, who immediately sent him to Rome to study the curial practice of the Rot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Friedrich Wilhelm Bessel
Friedrich Wilhelm Bessel (; 22 July 1784 – 17 March 1846) was a German astronomer, mathematician, physicist, and geodesist. He was the first astronomer who determined reliable values for the distance from the Sun to another star by the method of parallax. Certain important mathematical functions were first studied systematically by Bessel and were named Bessel functions in his honour. Life and family Bessel was born in Minden, Westphalia, then capital of the Prussian administrative region Minden-Ravensberg, as second son of a civil servant into a large family. At the age of 14 he left the school, because he did not like the education in Latin language, and apprenticed in the import-export concern Kulenkamp at Bremen. The business's reliance on cargo ships led him to turn his mathematical skills to problems in navigation. This in turn led to an interest in astronomy as a way of determining longitude. Bessel came to the attention of Heinrich Wilhelm Olbers, a practising phy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bessel (crater)
Bessel is a small lunar impact crater that is located in the southern half of the Mare Serenitatis. The crater was named after the German astronomer Friedrich Wilhelm Bessel in 1935. Despite its small size, this is the largest crater to lie entirely within the mare. It lies to the north-northeast of the crater Menelaus. This crater is circular and bowl-shaped with a rim that has a higher albedo than the floor or the surrounding mare. The outer rim is not significantly worn, and there are no features of note on the interior, apart from some slumping of material from the inner walls to the floor. Bessel is not of sufficient size to have developed the terrace structures of larger craters. A large ray crosses the mare from north to south, passing Bessel's western side. This ray is enigmatic due to its unclear origin. It appears to originate at the rim of Menelaus crater, yet it aligns with the trajectory of a Tycho ray, suggesting Tycho as a possible source. However, the Tycho r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bessel Fjord
Bessel Fjord is a fjord in northeastern Greenland. Administratively it belongs to the NE Greenland National Park area. History The area around the mouth of this fjord was referred to as "Bessel Bay" at the time of the 1869–70 Second German North Polar Expedition led by Carl Koldewey. It was named after German astronomer and director of the Königsberg university observatory Friedrich Wilhelm Bessel (1784–1846). Later, the 1906–08 Denmark expedition applied the name to the fjord itself. This fjord marked the northern border of Erik the Red's Land in 1932–1933.Spencer Apollonio, ''Lands That Hold One Spellbound: A Story of East Greenland,'' 2008 Geography Bessel Fjord stretches north of Norlund Land from west to east for about 53 km. Troms Island lies in its mouth in the Greenland Sea. This fjord marks the border between King Frederick VIII Land to the north and King Christian X Land to the south. It is located in Erik the Red's Land, in the Greenland Caledonites. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bessel Ellipsoid
The Bessel ellipsoid (or Bessel 1841) is an important reference ellipsoid of geodesy. It is currently used by several countries for their national geodetic surveys, but will be replaced in the next decades by modern ellipsoids of satellite geodesy. The Bessel ellipsoid was derived in 1841 by Friedrich Wilhelm Bessel, based on several arc measurements and other data of continental geodetic networks of Europe, Russia and the British Survey of India. It is based on 10 meridian arcs and 38 precise measurements of the astronomic latitude and longitude (see also astro geodesy). The dimensions of the Earth ellipsoid axes were defined by logarithms in keeping with former calculation methods. The Bessel and GPS ellipsoids The Bessel ellipsoid fits especially well to the geoid curvature of Europe and Eurasia. Therefore, it is optimal for National survey networks in these regions, although its axes are about 700 m shorter than that of the mean Earth ellipsoid derived by satellites ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epoch (astronomy)
In astronomy, an epoch or reference epoch is a instant, moment in time used as a reference point for some time-varying astronomical quantity. It is useful for the celestial coordinates or orbital elements of a Astronomical object, celestial body, as they are subject to Perturbation (astronomy), perturbations and vary with time. These time-varying astronomical quantities might include, for example, the mean longitude or mean anomaly of a body, the node of its orbit relative to a reference plane, the direction of the apogee or Perihelion and aphelion, aphelion of its orbit, or the size of the major axis of its orbit. The main use of astronomical quantities specified in this way is to calculate other relevant parameters of motion, in order to predict future positions and velocities. The applied tools of the disciplines of celestial mechanics or its subfield orbital mechanics (for predicting orbital paths and positions for bodies in motion under the gravitational effects of other bodi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
