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Grenville Turner
Grenville Turner (born 1 November 1936, in Todmorden) is a research professor at the University of Manchester. He is one of the pioneers of cosmochemistry. Education * Todmorden Grammar School * St. John's College, Cambridge (MA) * Balliol College, Oxford In 1962, he was awarded his D.Phil. (Oxford University's equivalent of a PhD) in nuclear physics. Career * University of California, Berkeley: assistant professor, 1962–64 * University of Sheffield: lecturer in physics, 1964–74, senior lecturer 1974–79, reader 1979–80, professor 1980–88 * Caltech: research associate, 1970–71 * University of Manchester: professor of isotope geochemistry, Department of Earth Sciences, 1988– * Member of committees for SERC, the British National Space Centre and PPARC Scientific work Professor Turner has been a leading figure in cosmochemistry since the 1960s. His pioneering work on rare gases in meteorites led him to develop the argon–argon dating technique that demonstr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Todmorden
Todmorden ( ; ) is a market town and civil parishes in England, civil parish in the Upper Calder Valley in Calderdale, West Yorkshire, England. It is north-east of Manchester, south-east of Burnley and west of Halifax, West Yorkshire, Halifax. In 2011 it had a population of 15,481. Todmorden is at the confluence of three steep-sided Pennines, Pennine valleys and is surrounded by moorlands with outcrops of Aeolian processes, sandblasted gritstone. The Historic counties of England, historic boundary between Yorkshire and Lancashire is the River Calder, West Yorkshire, River Calder and its tributary, Walsden Water, which run through the town. The administrative border was altered by the Local Government Act 1888 placing the whole of the town within the West Riding of Yorkshire, West Riding. The town is served by and railway stations. History Toponymy The name Todmorden first appears in 1641. The town had earlier been called Tottemerden, Totmardene, Totmereden or Totmerd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Todmorden High School
Todmorden High School is a comprehensive school in the town of Todmorden, Calderdale LEA, West Yorkshire, England. Admissions Todmorden High School and Visual Arts College is located in the West Yorkshire town of Todmorden. It is a comprehensive school for 11- to 16-year-olds. Typically pupils at Todmorden High School transfer to the school from one of its seven feeder schools at the age of 11 or 12. The school has approximately 820 pupils, and has 55 teaching staff members and 80 non-teaching staff members. Upon entry, pupils are placed into mixed ability tutor groups and typically remain in those groups for five years. Form tutors usually stay with their form until graduation. Curriculum The school teaches the full range of National Curriculum subjects at Key Stage 3 and a range of options at Key Stage 4. A special needs support system within each faculty helps pupils with learning difficulties. The school offers extra-curricular activities. Notable alumni Todmorde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argon–argon Dating
Argon–argon (or 40Ar/39Ar) dating is a radiometric dating method invented to supersede potassiumargon (K/Ar) dating in accuracy. The older method required splitting samples into two for separate potassium and argon measurements, while the newer method requires only one rock fragment or mineral grain and uses a single measurement of argon isotopes. 40Ar/39Ar dating relies on neutron irradiation from a nuclear reactor to convert a stable form of potassium (39K) into the radioactive 39Ar. As long as a standard of known age is co-irradiated with unknown samples, it is possible to use a single measurement of argon isotopes to calculate the 40K/40Ar* ratio, and thus to calculate the age of the unknown sample. 40Ar* refers to the radiogenic 40Ar, i.e. the 40Ar produced from radioactive decay of 40K. 40Ar* does not include atmospheric argon adsorbed to the surface or inherited through diffusion and its calculated value is derived from measuring the 36Ar (which is assumed to be of atmosphe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteorite
A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or Natural satellite, moon. When the original object enters the atmosphere, various factors such as friction, pressure, and chemical interactions with the atmospheric gases cause it to heat up and radiate energy. It then becomes a meteor and forms a Meteoroid#Fireball, fireball, also known as a shooting star; astronomers call the brightest examples "Bolide#Astronomy, bolides". Once it settles on the larger body's surface, the meteor becomes a meteorite. Meteorites vary greatly in size. For geologists, a bolide is a meteorite large enough to create an impact crater. Meteorites that are recovered after being observed as they transit the atmosphere and Impact event, impact the Earth are called meteorite falls. All others are known as meteorite finds. Meteorites have traditiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rare Gas
The noble gases (historically also the inert gases; sometimes referred to as aerogens) make up a class of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six naturally occurring noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn). Oganesson (Og) is a synthetically produced highly radioactive element. Although IUPAC has used the term "noble gas" interchangeably with "group 18" and thus included oganesson, it may not be significantly chemically noble and is predicted to break the trend and be reactive due to relativistic effects. Because of the extremely short 0.7 ms half-life of its only known isotope, its chemistry has not yet been investigated. For the first six periods of the periodic table, the noble gases are exactly the members of group 18. Noble gases are typically highly unreactive except when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PPARC
The Particle Physics and Astronomy Research Council (PPARC) was one of a number of research councils in the United Kingdom. It directed, coordinated and funded research in particle physics and astronomy for the people of the UK. Its head office was at Polaris House in Swindon, Wiltshire, but it also operated three scientific sites: the UK Astronomy Technology Centre (UK ATC) in Edinburgh, the Isaac Newton Group of Telescopes (ING) in La Palma and the Joint Astronomy Centre (JAC) in Hawaii. It published the ''Frontiers'' magazine three times a year, containing news and highlights of the research and outreach programmes it supports. The PPARC was formed in April 1994 when the Science and Engineering Research Council was split into several organizations; other products of the split included the Engineering and Physical Sciences Research Council (EPSRC) and the Biotechnology and Biological Sciences Research Council (BBSRC). In April 2007, it merged with the Council for the Central ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British National Space Centre
The British National Space Centre (BNSC) was an agency of the Government of the United Kingdom, organised in 1985, that coordinated civil space activities for the United Kingdom. It was replaced on 1 April 2010 by the United Kingdom Space Agency (UKSA). Structure BNSC operated as a voluntary partnership of ten British government departments and agencies and Research Councils. The civil portion of the British space programme focused on space science, Earth observation, satellite telecommunications, and global navigation (for example GPS and Galileo positioning system, Galileo). The latest version of the UK civil space strategy which defined the goals of BNSC was published in February 2008. Notably the BNSC had a policy against human spaceflight, and did not contribute to the International Space Station. Staffing arrangements Rather than being a full space agency as maintained by some other countries, BNSC HQ comprised about thirty civil servants on rotation from the partners. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science And Engineering Research Council
The Science and Engineering Research Council (SERC) and its predecessor the Science Research Council (SRC) were the UK agencies in charge of publicly funded scientific and engineering research activities, including astronomy, biotechnology and biological sciences, space research and particle physics, between 1965 and 1994. History The SERC also had oversight of: * the Royal Greenwich Observatory (RGO) * the Royal Observatory Edinburgh (ROE) * the Rutherford Appleton Laboratory (RAL) * the Daresbury Laboratory From its formation in 1965 until 1981 it was known as the Science Research Council (SRC). The SRC had been formed in 1965 as a result of the Trend Committee enquiry into the organisation of civil science in the UK. Previously the Minister for Science had been responsible for various research activities in the Department of Scientific and Industrial Research (DSIR) and more loosely with a variety of agencies concerned with the formulation of civil scientific policy. One ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geochemistry
Geochemistry is the science that uses the tools and principles of chemistry to explain the mechanisms behind major geological systems such as the Earth's crust and its oceans. The realm of geochemistry extends beyond the Earth, encompassing the entire Solar System, and has made important contributions to the understanding of a number of processes including mantle convection, the formation of planets and the origins of granite and basalt. It is an integrated field of chemistry and geology. History The term ''geochemistry'' was first used by the Swiss-German chemist Christian Friedrich Schönbein in 1838: "a comparative geochemistry ought to be launched, before geognosy can become geology, and before the mystery of the genesis of our planets and their inorganic matter may be revealed." However, for the rest of the century the more common term was "chemical geology", and there was little contact between geologists and chemists. Geochemistry emerged as a separate discipline after ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caltech
The California Institute of Technology (branded as Caltech or CIT)The university itself only spells its short form as "Caltech"; the institution considers other spellings such a"Cal Tech" and "CalTech" incorrect. The institute is also occasionally referred to as "CIT", most notably in its alma mater, but this is uncommon. is a private university, private research university in Pasadena, California. Caltech is ranked among the best and most selective academic institutions in the world, and with an enrollment of approximately 2400 students (acceptance rate of only 5.7%), it is one of the world's most selective universities. The university is known for its strength in science and engineering, and is among a small group of Institute of Technology (United States), institutes of technology in the United States which is primarily devoted to the instruction of pure and applied sciences. The institution was founded as a preparatory and vocational school by Amos G. Throop in 1891 and began ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 discipl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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