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William Houlder Zachariasen
William Houlder Zachariasen (5 February 1906 – 24 December 1979), more often known as W. H. Zachariasen, was a Norwegian-American physicist, specializing in X-ray crystallography and famous for his work on the structure of glass. Background Zachariasen was born in Langesund at Bamble in Telemark, Norway. He entered the University of Oslo in 1923, where he studied in the Mineralogical Institute. Zachariasen published his first article in 1925 when he was 19 years old, after having presented the contents of the article to the Norwegian Academy of Sciences in the preceding year. Over a span of 55 years he published over 200 scientific papers, many of which he was the sole author. In 1928 at the age of 22 he earned his PhD from the University of Oslo, becoming the youngest person ever to receive a PhD in Norway. His thesis advisor was the famous geochemist Victor Moritz Goldschmidt. In the years 1928–1929, as a postdoctoral fellow at Manchester University in the laboratory of Si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Langesund
is the administrative centre of the municipalities of Norway, municipality of Bamble, Norway. The town of Langesund was established as a municipality 1 January 1838 (see formannskapsdistrikt). It was merged with Bamble 1 January 1964. In the early days, Langesund was one of the most important shipping towns in Norway. Peter Wessel Tordenskiold got one of his ships built in Langesund, ''Løvendals Gallej''. It was known as Longsound in English in the 1800s. It is possible to visit the remains of the old Coastal Fortress on Langesundstangen on the extreme end of the Langesund peninsula. The fort was established during the Second World War by Nazi Germany and later used by the Norwegian Coastal Artillery and Home Guard (Norway), Home Guard until 1993. Langesund is one of the most celebrated summer towns in Norway because of the large number of sunny days. It is also well known for Wrightegaarden, a building that hosts outdoor concerts every weekend the whole summer. Artists lik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manhattan Project
The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons. It was led by the United States with the support of the United Kingdom and Canada. From 1942 to 1946, the project was under the direction of Major General Leslie Groves of the United States Army Corps of Engineers, U.S. Army Corps of Engineers. Nuclear physicist Robert Oppenheimer was the director of the Los Alamos Laboratory that designed the actual bombs. The Army component of the project was designated the Manhattan District as its first headquarters were in Manhattan; the placename gradually superseded the official codename, Development of Substitute Materials, for the entire project. Along the way, the project absorbed its earlier British counterpart, Tube Alloys. The Manhattan Project began modestly in 1939, but grew to employ more than 130,000 people and cost nearly US$2 billion (equivalent to about $ billion in ). Over 90 percent of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transuranium Element
The transuranium elements (also known as transuranic elements) are the chemical elements with atomic numbers greater than 92, which is the atomic number of uranium. All of these elements are unstable and decay radioactively into other elements. With the exception of neptunium and plutonium (which have been found in trace amounts in nature), all do not occur naturally on Earth and are synthetic. Overview Of the elements with atomic numbers 1 to 92, most can be found in nature, having stable isotopes (such as hydrogen) or very long-lived radioisotopes (such as uranium), or existing as common decay products of the decay of uranium and thorium (such as radon). The exceptions are elements 43, 61, 85, and 87; all four occur in nature, but only in very minor branches of the uranium and thorium decay chains, and thus all save element 87 were first discovered by synthesis in the laboratory rather than in nature (and even element 87 was discovered from purified samples of its parent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyhedron
In geometry, a polyhedron (plural polyhedra or polyhedrons; ) is a three-dimensional shape with flat polygonal faces, straight edges and sharp corners or vertices. A convex polyhedron is the convex hull of finitely many points, not all on the same plane. Cubes and pyramids are examples of convex polyhedra. A polyhedron is a 3-dimensional example of a polytope, a more general concept in any number of dimensions. Definition Convex polyhedra are well-defined, with several equivalent standard definitions. However, the formal mathematical definition of polyhedra that are not required to be convex has been problematic. Many definitions of "polyhedron" have been given within particular contexts,. some more rigorous than others, and there is not universal agreement over which of these to choose. Some of these definitions exclude shapes that have often been counted as polyhedra (such as the self-crossing polyhedra) or include shapes that are often not considered as valid polyhedr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of California, San Diego
The University of California, San Diego (UC San Diego or colloquially, UCSD) is a public university, public Land-grant university, land-grant research university in San Diego, California. Established in 1960 near the pre-existing Scripps Institution of Oceanography, UC San Diego is the southernmost of the ten campuses of the University of California, and offers over 200 undergraduate and graduate degree programs, enrolling 33,096 undergraduate and 9,872 graduate students. The university occupies near the coast of the Pacific Ocean, with the main campus resting on approximately . UC San Diego is ranked among the best universities in the world by major college and university rankings. UC San Diego consists of twelve undergraduate, graduate and professional schools as well as seven undergraduate residential colleges. It received over 140,000 applications for undergraduate admissions in Fall 2021, making it the second most applied-to university in the United States. UC San Diego H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Alamos National Laboratory
Los Alamos National Laboratory (often shortened as Los Alamos and LANL) is one of the sixteen research and development laboratories of the United States Department of Energy (DOE), located a short distance northwest of Santa Fe, New Mexico, in the American southwest. Best known for its central role in helping develop the first atomic bomb, LANL is one of the world's largest and most advanced scientific institutions. Los Alamos was established in 1943 as Project Y, a top-secret site for designing nuclear weapons under the Manhattan Project during World War II.The site was variously called Los Alamos Laboratory and Los Alamos Scientific Laboratory. Chosen for its remote yet relatively accessible location, it served as the main hub for conducting and coordinating nuclear research, bringing together some of the world's most famous scientists, among them numerous Nobel Prize winners. The town of Los Alamos, directly north of the lab, grew extensively through this period. After ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Fe, New Mexico
Santa Fe ( ; , Spanish for 'Holy Faith'; tew, Oghá P'o'oge, Tewa for 'white shell water place'; tiw, Hulp'ó'ona, label=Tiwa language, Northern Tiwa; nv, Yootó, Navajo for 'bead + water place') is the capital of the U.S. state of New Mexico. The name “Santa Fe” means 'Holy Faith' in Spanish, and the city's full name as founded remains ('The Royal Town of the Holy Faith of Saint Francis of Assisi'). With a population of 87,505 at the 2020 United States census, 2020 census, it is the List of municipalities in New Mexico, fourth-largest city in New Mexico. It is also the county seat of Santa Fe County. Its metropolitan area is part of the Albuquerque, New Mexico, Albuquerque–Santa Fe–Las Vegas, New Mexico, Las Vegas Albuquerque–Santa Fe–Las Vegas combined statistical area, combined statistical area, which had a population of 1,162,523 in 2020. Human settlement dates back thousands of years in the region, the placita was founded in 1610 as the capital of . It replace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfred O
Alfred may refer to: Arts and entertainment *''Alfred J. Kwak'', Dutch-German-Japanese anime television series * ''Alfred'' (Arne opera), a 1740 masque by Thomas Arne * ''Alfred'' (Dvořák), an 1870 opera by Antonín Dvořák *"Alfred (Interlude)" and "Alfred (Outro)", songs by Eminem from the 2020 album ''Music to Be Murdered By'' Business and organisations * Alfred, a radio station in Shaftesbury, England *Alfred Music, an American music publisher *Alfred University, New York, U.S. *The Alfred Hospital, a hospital in Melbourne, Australia People * Alfred (name) includes a list of people and fictional characters called Alfred * Alfred the Great (848/49 – 899), or Alfred I, a king of the West Saxons and of the Anglo-Saxons Places Antarctica * Mount Alfred (Antarctica) Australia * Alfredtown, New South Wales * County of Alfred, South Australia Canada * Alfred and Plantagenet, Ontario * Alfred Island, Nunavut * Mount Alfred, British Columbia United States * Alfred, Maine, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Minnesota
The University of Minnesota, formally the University of Minnesota, Twin Cities, (UMN Twin Cities, the U of M, or Minnesota) is a public university, public Land-grant university, land-grant research university in the Minneapolis–Saint Paul, Twin Cities of Minneapolis and Saint Paul, Minnesota, United States. The Twin Cities campus comprises locations in Minneapolis and Falcon Heights, Minnesota, Falcon Heights, a suburb of St. Paul, approximately apart. The Twin Cities campus is the oldest and largest in the University of Minnesota system and has the List of United States university campuses by enrollment, ninth-largest main campus student body in the United States, with 52,376 students at the start of the 2021–22 academic year. It is the Flagship#Colleges and universities in the United States, flagship institution of the University of Minnesota System, and is organized into 19 colleges, schools, and other major academic units. The Minnesota Territorial Legislature drafted a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marcel Schein
Marcel Schein (June 9, 1902 – February 20, 1960) was a Slovak-born American physicist, best known for his work on cosmic rays. He is the father of former MIT professor Edgar Schein. Biography Marcel Schein was born in Trstená, Kingdom of Hungary on June 9, 1902. He died in Chicago on February 20, 1960, and was buried at Oak Woods Cemetery. Education and career Schein studied at the universities of Vienna, Würzburg and Zurich, where he got his PhD with the best mark, ''magna cum laude''. In the following years he taught at several European universities. In 1938, he emigrated to the United States where he joined the University of Chicago's Institute of Physics as staff researcher. In 1943, he joined the university's faculty. He was promoted to a full professor three years later in 1946. Bibliography * ''Problems in cosmic ray physics'', 1946 See also * Schein Schein is the surname of: * Charles Schein (1928–2003), French polymer chemist of Romanian origin * D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samuel King Allison
Samuel King Allison (November 13, 1900 – September 15, 1965) was an American physicist, most notable for his role in the Manhattan Project, for which he was awarded the Medal for Merit. He was director of the Metallurgical Laboratory from 1943 until 1944, and later worked at the Los Alamos Laboratory — where he "rode herd" on the final stages of the project as part of the "Cowpuncher Committee", and read the countdown for the detonation of the Trinity nuclear test. After the war, he returned to the University of Chicago to direct the Institute for Nuclear Studies and was involved in the "scientists' movement", lobbying for civilian control of nuclear weapons. Early life Samuel King Allison was born in Chicago, Illinois, on November 13, 1900, the son of Samuel Buell Allison, an elementary school principal. He was educated at John Fiske Grammar School and Hyde Park High School. He entered the University of Chicago in 1917, and participated in varsity swimming and water bask ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waldemar Christofer Brøgger (geologist)
Waldemar Christofer Brøgger FRSE (10 November 185117 February 1940) was a Norwegian geologist and mineralogist. His research on Permian igneous rocks (286 to 245 million years ago) of the Oslo district greatly advanced petrologic theory on the formation of rocks. Biography He was born in Christiania (now Oslo), Norway. He was the son of Anton Wilhelm Brøgger (1820–82) and Oline (“Lina”) Marie Bjerring (1826–1905). He attended Oslo Cathedral School and graduated in 1870. He studied science and zoology under Theodor Kjerulf at University of Christiania (now University of Oslo). He was Cand. filos. (1870) and delivered his dissertation in 1875. Brøgger was then immediately employed in the Norwegian Geological Survey as an assistant. In the winter of 1875–76, he made a study trip together with fellow student Hans Reusch (1852–1922) to Corsica and Elba. The two jointly published an illustrated work, ''Jættegryder ved Christiania'' (Copenhagen. 1874) which was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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