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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) and no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franck James D21
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Franck can refer to: People * Franck (name) Other * Franck, Argentina, town in Santa Fe Province, Argentina * 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 almost all British subjects do have this entitlement. As of 2025, about 20,400 British subjects hold valid British passports with this status and enjoy consular protection when travelling abroad; about 800 do not have right of abode ... [...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 grammar school system or with university preparatory school, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lüben
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. Lubin was a small town with medieval origins, being a castellan seat in the 12th century. Over the centuries it prospered as a center of cloth and linen making. It owed its recent great growth to the discovery of the largest copper ore deposits in Europe in 1957. 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, one of the world's leading copper and silver producers. It is one of four cities in the Copper Belt (along with Legnica, Głogów and Polkowice). It is located on the main highway connecting the port city of Szczecin with the Cz ... [...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, composer and academic teacher. First trained as a pianist, he was a concert singer who sometimes sang to his own accompaniment. He was a close friend of Johannes Brahms. 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. He taught at the Institute of Musical Art in New York City. Biography Georg Isidor Henschel was born at Breslau (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 ''bass'' but developing a fine baritone voice. In 1868, he sang the role of Hans Sachs in a concert performance of Wagner's '' Die Meistersinger von Nürnberg'' at Munich. With one minor and unplanned exception, he never sang on stage, confining himself to concert appe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Notary Public
A notary public ( notary or public notary; notaries public) of the common law is a public officer constituted by law to serve the public in non-contentious matters usually concerned with general financial transactions, estates, deeds, powers-of-attorney, and foreign and international business. A notary's main functions are to validate the signature of a person (for purposes of signing a document); administer oaths and affirmations; take affidavits and statutory declarations, including from witnesses; authenticate the execution of certain classes of documents; take acknowledgments (e.g., of deeds and other conveyances); provide notice of foreign drafts; provide Exemplified copy, exemplifications and notarial copies; and, to perform certain other official acts depending on the jurisdiction (area), jurisdiction. Such transactions are known as notarial acts, or more commonly, notarizations. The term ''notary public'' only refers to common-law notaries and should not be confused wit ... [...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 electromagnetic spectra. In narrower contexts, spectroscopy is the precise study of color as generalized from visible light to all bands of the electromagnetic spectrum. 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 electronic structure of matter to be investigated at the atomic, molecular and macro scale, and over astronomical distances. Historically, spectroscopy originated as the study of the wavelength dependence of the absorption by gas phase matter of visible light dispersed by a prism. Current applications of spectroscopy include biomedical spectroscopy in the areas of tissue analysis and medical imaging. Matter waves and acoustic waves can also be considered forms of radiative energy, and recently gravitational waves have been associated with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manhattan Project
The Manhattan Project was a research and development program undertaken during World War II to produce the first nuclear weapons. It was led by the United States in collaboration with the United Kingdom and Canada. From 1942 to 1946, the project was directed by Major General Leslie Groves of the United States Army Corps of Engineers, U.S. Army Corps of Engineers. Nuclear physicist J. Robert Oppenheimer was the director of the Los Alamos Laboratory that designed the bombs. The Army program was designated the Manhattan District, as its first headquarters were in Manhattan; the name gradually superseded the official codename, Development of Substitute Materials, for the entire project. The project absorbed its earlier British counterpart, Tube Alloys, and subsumed the program from the American civilian Office of Scientific Research and Development. The Manhattan Project employed nearly 130,000 people at its peak and cost nearly US$2 billion (equivalent to about $ b ... [...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 information in the United Kingdom, 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 Frisch–Peierls memorandum, 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 ... [...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 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 (unless uranium-233 is used). 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 chemical elements can be purified through chemical processes, isotopes of the same element have nearly identical chemical properties which makes this type ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second World War
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
