|
Nuclear Orientation
Nuclear orientation, in nuclear physics, is the directional ordering of an assembly of nuclear spins with respect to some axis in space. It is one of the nuclear spectroscopy methods. A nuclear level with spin in a magnetic field will divide into magnetic sub-levels with an energy spacing.General Idea of Nuclear Orientation , UK. |
Nuclear Physics
Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions, in addition to the study of other forms of nuclear matter. Nuclear physics should not be confused with atomic physics, which studies the atom as a whole, including its electrons. Discoveries in nuclear physics have led to applications in many fields. This includes nuclear power, nuclear weapons, nuclear medicine and magnetic resonance imaging, industrial and agricultural isotopes, ion implantation in materials engineering, and radiocarbon dating in geology and archaeology. Such applications are studied in the field of nuclear engineering. Particle physics evolved out of nuclear physics and the two fields are typically taught in close association. Nuclear astrophysics, the application of nuclear physics to astrophysics, is crucial in explaining the inner workings of stars and the origin of the chemical elements. History The history of nuclear physics as a di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Royal Society
The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, recognising excellence in science, supporting outstanding science, providing scientific advice for policy, education and public engagement and fostering international and global co-operation. Founded on 28 November 1660, it was granted a royal charter by King Charles II as The Royal Society and is the oldest continuously existing scientific academy in the world. The society is governed by its Council, which is chaired by the Society's President, according to a set of statutes and standing orders. The members of Council and the President are elected from and by its Fellows, the basic members of the society, who are themselves elected by existing Fellows. , there are about 1,700 fellows, allowed to use the postnominal title FRS (Fellow of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mössbauer Spectroscopy
Mössbauer spectroscopy is a spectroscopic technique based on the Mössbauer effect. This effect, discovered by Rudolf Mössbauer (sometimes written "Moessbauer", German: "Mößbauer") in 1958, consists of the nearly recoil-free emission and absorption of nuclear gamma rays in solids. The consequent nuclear spectroscopy method is exquisitely sensitive to small changes in the chemical environment of certain nuclei. Typically, three types of nuclear interactions may be observed: the isomer shift due to differences in nearby electron densities (also called the chemical shift in older literature), quadrupole splitting due to atomic-scale electric field gradients; and magnetic Zeeman splitting due to non-nuclear magnetic fields. Due to the high energy and extremely narrow line widths of nuclear gamma rays, Mössbauer spectroscopy is a highly sensitive technique in terms of energy (and hence frequency) resolution, capable of detecting changes of just a few parts in 1011. It is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Magnetic Resonance
Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a strong constant magnetic field are perturbed by a weak oscillating magnetic field (in the near field) and respond by producing an electromagnetic signal with a frequency characteristic of the magnetic field at the nucleus. This process occurs near resonance, when the oscillation frequency matches the intrinsic frequency of the nuclei, which depends on the strength of the static magnetic field, the chemical environment, and the magnetic properties of the isotope involved; in practical applications with static magnetic fields up to ca. 20 tesla, the frequency is similar to VHF and UHF television broadcasts (60–1000 MHz). NMR results from specific magnetic properties of certain atomic nuclei. Nuclear magnetic resonance spectroscopy is widely used to determine the structure of organic molecules in solution and study molecular physics and crystals as well as non-crystalline materials. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperfine Interactions
In atomic physics, hyperfine structure is defined by small shifts in otherwise degenerate energy levels and the resulting splittings in those energy levels of atoms, molecules, and ions, due to electromagnetic multipole interaction between the nucleus and electron clouds. In atoms, hyperfine structure arises from the energy of the nuclear magnetic dipole moment interacting with the magnetic field generated by the electrons and the energy of the nuclear electric quadrupole moment in the electric field gradient due to the distribution of charge within the atom. Molecular hyperfine structure is generally dominated by these two effects, but also includes the energy associated with the interaction between the magnetic moments associated with different magnetic nuclei in a molecule, as well as between the nuclear magnetic moments and the magnetic field generated by the rotation of the molecule. Hyperfine structure contrasts with ''fine structure'', which results from the interaction be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Independent
''The Independent'' is a British online newspaper. It was established in 1986 as a national morning printed paper. Nicknamed the ''Indy'', it began as a broadsheet and changed to tabloid format in 2003. The last printed edition was published on Saturday 26 March 2016, leaving only the online edition. The newspaper was controlled by Tony O'Reilly's Irish Independent News & Media from 1997 until it was sold to the Russian oligarch and former KGB Officer Alexander Lebedev in 2010. In 2017, Sultan Muhammad Abuljadayel bought a 30% stake in it. The daily edition was named National Newspaper of the Year at the 2004 British Press Awards. The website and mobile app had a combined monthly reach of 19,826,000 in 2021. History 1986 to 1990 Launched in 1986, the first issue of ''The Independent'' was published on 7 October in broadsheet format.Dennis Griffiths (ed.) ''The Encyclopedia of the British Press, 1422–1992'', London & Basingstoke: Macmillan, 1992, p. 330 It was prod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clarendon Laboratory
The Clarendon Laboratory, located on Parks Road within the Science Area in Oxford, England (not to be confused with the Clarendon Building, also in Oxford), is part of the Department of Physics at Oxford University. It houses the atomic and laser physics, condensed matter physics, and biophysics groups within the Department, although four other Oxford Physics groups are not based in the Clarendon Lab. The Oxford Centre for Quantum Computation is also housed in the laboratory. Buildings The Clarendon Laboratory consists of two adjoining buildings, the Lindemann Building (named after Frederick Lindemann, 1st Viscount Cherwell) and the Grade II listed Townsend Building (named after Sir John Sealy Townsend). The Beecroft Building (named after Adrian Beecroft) is now immediately in front of the Lindemann Building, completed in 2018 and designed by Hawkins\Brown, with a budget of approximately £40 million. History The Clarendon is named after Edward Hyde, 1st Earl of Claren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael Grace (physicist)
{{hndis, name=Grace, Michael ...
Michael Grace may refer to: * Michael P. Grace (1842–1920), international businessman * Michael P. Grace II (1917–1995), Broadway producer and lyricist * Mick Grace (1874–1912), Australian rules footballer * Mike Grace (third baseman) (born 1956), former Major League Baseball third baseman * Mike Grace (pitcher) (born 1970), former Major League Baseball pitcher * Michael Grace Jr., core member and songwriter of bands My Favorite and The Secret History ''The Secret History'' is the first novel by the American author Donna Tartt, published by Alfred A. Knopf in September 1992. Set in New England, the campus novel tells the story of a closely knit group of six classics students at Hampden Col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jim Daniels (physicist)
James Raymond Daniels (born 1956 in Detroit, Michigan) is an American poet and writer. He lives in Pittsburgh with his wife, the writer Kristin Kovacic. Life and work Daniels was on the faculty of the creative writing program at Carnegie Mellon University in Pittsburgh, Pennsylvania, from 1981-2021, where he was the Thomas Stockham Baker University Professor of English. He taught in the Antioch University-Los Angeles low-residency MFA Program from 2007-2021. He currently teaches in the Alma College low-residency MFA Program. The majority of Daniels' papers are held in Michigan State University LibrarieSpecial Collections Daniels' literary works have been recognized and highlighted at Michigan State University in their Michigan Writers Series. He won the inaugural Brittingham Prize in Poetry in 1985 from the University of Wisconsin–Madison. He was educated at Alma College and Bowling Green State University. Works Poetry * ''Factory Poems'' (Alma: Jack-in-the-Box Press, 197 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neville Robinson
Frank Neville Hosband Robinson (13 April 192519 October 1996) was an English physicist. Neville Robinson was educated at The Leys School in Cambridge, England, and Christ's College, Cambridge, where he read Physics. Robinson initially worked as a civil servant at the Services Electronic Research Laboratory (SERL) in Baldock, Hertfordshire, under the director Robert Sutton. He then moved to the Clarendon Laboratory at Oxford University to undertake a DPhil doctorate degree in low temperature physics, as a Nuffield Research Fellow (1950–54). With Jim Daniels and Michael Grace, he produced an example of nuclear orientation for the first time. Then in 1951, in the first nuclear cooling experiment, he produced the lowest temperature ever achieved until then at only ten millionths of a degree Kelvin above absolute zero. Robinson was an English Electric Research Fellow from 1955 to 1959. He was a faculty fellow at Nuffield College, Oxford, from 1958 to 1961, immediatel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
