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Heinrich Gerhard Kuhn
Heinrich Gerhard Kuhn (10 March 1904 – 25 August 1994) was a British physicist. A graduate of the University of Göttingen, where he studied for his doctorate under the direction of James Franck, winner of the 1925 Nobel Prize for Physics, he left Germany after the Nazi Party came to power there in 1933, and moved to Britain, where relatives had settled, becoming a British subject in 1939. At the invitation of Frederick Alexander Lindemann, he worked for Imperial Chemical Industries at the Clarendon Laboratory in Oxford, where he studied hyperfine structure. During the Second World War, he worked on isotope separation for Tube Alloys and the Manhattan Project. He was the first physicist to become a fellow at Balliol College, Oxford, in 1950, and published textbooks on atomic spectra in German in 1934 and English in 1962. Biography Heinrich Gerhard Kuhn was born in Breslau, Germany, on 10 March 1904, the second son of Wilhelm Felix Kuhn, a '' rechtsanwalt'' (lawyer) an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franck James D21
{{DEFAULTSORT:Franck ...
Franck can refer to: People * Franck (name) Other * Franck (company), Croatian coffee and snacks company * Franck (crater), Lunar crater named after James Franck See also * Franc (other) * Franks * Frank (other) * Frankie (other) * Frankel, Frankl Frankl is a surname. Notable people with the surname include: * Ludwig August von Frankl (1810–1894), Austrian writer and philanthropist * Michal Frankl (born 1974), Czech historian * Nicholas Frankl (born 1971), British-Hungarian entrepreneur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Subject
The term "British subject" has several different meanings depending on the time period. Before 1949, it referred to almost all subjects of the British Empire (including the United Kingdom, Dominions, and colonies, but excluding protectorates and protected states). Between 1949 and 1983, the term was synonymous with Commonwealth citizen. Currently, it refers to people possessing a class of British nationality largely granted under limited circumstances to those connected with Ireland or British India born before 1949. Individuals with this nationality are British nationals and Commonwealth citizens, but not British citizens. The status under the current definition does not automatically grant the holder right of abode in the United Kingdom but most British subjects do have this entitlement. About 32,400 British subjects hold active British passports with this status and enjoy consular protection when travelling abroad; fewer than 800 do not have right of abode in the UK. Nati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnasium (Germany)
''Gymnasium'' (; German plural: ''Gymnasien''), in the German education system, is the most advanced and highest of the three types of German secondary schools, the others being ''Hauptschule'' (lowest) and ''Realschule'' (middle). ''Gymnasium'' strongly emphasizes academic learning, comparable to the British sixth form system or with prep schools in the United States. A student attending ''Gymnasium'' is called a ''Gymnasiast'' (German plural: ''Gymnasiasten''). In 2009/10 there were 3,094 gymnasia in Germany, with students (about 28 percent of all precollegiate students during that period), resulting in an average student number of 800 students per school.Federal Statistical office of Germany, Fachserie 11, Reihe 1: Allgemeinbildende Schulen – Schuljahr 2009/2010, Wiesbaden 2010 Gymnasia are generally public, state-funded schools, but a number of parochial and private gymnasia also exist. In 2009/10, 11.1 percent of gymnasium students attended a private gymnasium. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lüben
Lubin (; german: Lüben, szl, Lubin) is a city in Lower Silesian Voivodeship in south-western Poland. It is the administrative seat of Lubin County, and also of the rural district called Gmina Lubin, although it is not part of the territory of the latter, as the town forms a separate urban gmina. As of 2021, the city had a total population of 70,815. Geography Lubin is situated on the Zimnica river in the Lower Silesian historical region, about northwest of Wrocław and north of Legnica. The city is one of the major industrial locations in Lower Silesia, with the headquarters of the third-largest Polish corporation, the KGHM Polska Miedź mining company. History The area of Lubin lies midway between the main settlements of two West Slavic Ślężanie tribes, the Dziadoszanie and the Trzebowianie, whose lands were both subdued by King Mieszko I of Poland about 990. It is unclear which of the two tribes, if either, founded the town. One legend states that the town deri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Henschel
Sir Isidor George Henschel (18 February 185010 September 1934) was a German-born British baritone, pianist, conductor, and composer. His first wife Lillian was also a singer. He was the first conductor of both the Boston Symphony Orchestra and the Royal Scottish National Orchestra. Biography Henschel was born at Breslau, in Silesia, Kingdom of Prussia (now Wrocław, Poland) and educated as a pianist, making his first public appearance in Berlin in 1862. He subsequently took up singing, initially and briefly as a ''basso profundo'' but developing a fine baritone voice. In 1868, he sang the part of Hans Sachs in a concert performance of ''Die Meistersinger von Nürnberg'' at Munich. With one minor and unplanned exception, he never sang on stage, confining himself to concert appearances. He was a close friend of Johannes Brahms, whom he met in May 1874 at the Lower Rhenish Music Festival in Cologne, where Henschel sang the role of Harapha in Handel's oratorio ''Samson''. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rechtsanwalt
A European lawyer, beyond the self-evident definition of 'a lawyer in Europe', also refers to a specific definition introduced by the UK's European Communities (Services of Lawyers) Order 1978, which permits lawyers from other EU member states to practice law within the UK, in accordance with EU directive 77/249/EEC. The term EU lawyer is also used in UK law. The order contains a list of countries of origin and the designations which the order applies to for example a professional "entitled to pursue his professional activities""Annex 10A European Communities (Services of Lawyers) Order 1978" such as an "advokat" in , may pra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomic Spectra
Spectroscopy is the field of study that measures and interprets the electromagnetic spectra that result from the interaction between electromagnetic radiation and matter as a function of the wavelength or frequency of the radiation. Matter waves and acoustic waves can also be considered forms of radiative energy, and recently gravitational waves have been associated with a spectral signature in the context of the Laser Interferometer Gravitational-Wave Observatory (LIGO) In simpler terms, spectroscopy is the precise study of color as generalized from visible light to all bands of the electromagnetic spectrum. Historically, spectroscopy originated as the study of the wavelength dependence of the absorption by gas phase matter of visible light dispersed by a prism. Spectroscopy, primarily in the electromagnetic spectrum, is a fundamental exploratory tool in the fields of astronomy, chemistry, materials science, and physics, allowing the composition, physical structure and elec ... [...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] |
Tube Alloys
Tube Alloys was the research and development programme authorised by the United Kingdom, with participation from Canada, to develop nuclear weapons during the Second World War. Starting before the Manhattan Project in the United States, the British efforts were kept classified, and as such had to be referred to by code even within the highest circles of government. The possibility of nuclear weapons was acknowledged early in the war. At the University of Birmingham, Rudolf Peierls and Otto Robert Frisch co-wrote a memorandum explaining that a small mass of pure uranium-235 could be used to produce a chain reaction in a bomb with the power of thousands of tons of TNT. This led to the formation of the MAUD Committee, which called for an all-out effort to develop nuclear weapons. Wallace Akers, who oversaw the project, chose the deliberately misleading code name "Tube Alloys". His Tube Alloys Directorate was part of the Department of Scientific and Industrial Research. The Tube ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isotope Separation
Isotope separation is the process of concentrating specific isotopes of a chemical element by removing other isotopes. The use of the nuclides produced is varied. The largest variety is used in research (e.g. in chemistry where atoms of "marker" nuclide are used to figure out reaction mechanisms). By tonnage, separating natural uranium into enriched uranium and depleted uranium is the largest application. In the following text, mainly the uranium enrichment is considered. This process is crucial in the manufacture of uranium fuel for nuclear power plants, and is also required for the creation of uranium-based nuclear weapons. Plutonium-based weapons use plutonium produced in a nuclear reactor, which must be operated in such a way as to produce plutonium already of suitable isotopic mix or ''grade''. While different chemical elements can be purified through chemical reaction, chemical processes, isotopes of the same element have nearly identical chemical properties, which makes this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second World War
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] |
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