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Cyril Hilsum
Cyril Hilsum (born 17 May 1925) is a British physicist and academic. Hilsum was elected a member of the National Academy of Engineering in 1983 for the inventiveness and leadership in introducing III-V semiconductors into electronic technology. Life Hilsum entered Raine's Foundation School in 1936 as the middle of three brothers, leaving in 1943 after being accepted into University College London, where he did his BSc. In 1945, he joined the Royal Naval Scientific Service, moving in 1947 to the Admiralty Research Laboratory. In 1950, he transferred again to the Services Electronics Research Laboratory (SERL) where he remained until 1964 before again moving, this time to the Royal Radar Establishment. He won the Welker Award in 1978, was elected a Fellow of the Royal Academy of Engineering, a Fellow of the Royal Society in 1979 and an honorary member of the American National Academy of Engineering. In 1983, he was appointed Chief Scientist at GEC Hirst Research Centre. He was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University College London
, mottoeng = Let all come who by merit deserve the most reward , established = , type = Public research university , endowment = £143 million (2020) , budget = £1.544 billion (2019/20) , chancellor = Anne, Princess Royal(as Chancellor of the University of London) , provost = Michael Spence , head_label = Chair of the council , head = Victor L. L. Chu , free_label = Visitor , free = Sir Geoffrey Vos , academic_staff = 9,100 (2020/21) , administrative_staff = 5,855 (2020/21) , students = () , undergrad = () , postgrad = () , coordinates = , campus = Urban , city = London, England , affiliations = , colours = Purple and blue celeste , nickname ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Portrait Gallery (London)
The National Portrait Gallery (NPG) is an art gallery in London housing a collection of portraits of historically important and famous British people. It was arguably the first national public gallery dedicated to portraits in the world when it opened in 1856. The gallery moved in 1896 to its current site at St Martin's Place, off Trafalgar Square, and adjoining the National Gallery (London), National Gallery. It has been expanded twice since then. The National Portrait Gallery also has regional outposts at Beningbrough Hall in Yorkshire and Montacute House in Somerset. It is unconnected to the Scottish National Portrait Gallery in Edinburgh, with which its remit overlaps. The gallery is a non-departmental public body sponsored by the Department for Digital, Culture, Media and Sport. Collection The gallery houses portraits of historically important and famous British people, selected on the basis of the significance of the sitter, not that of the artist. The collection includes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gunn Diode
A Gunn diode, also known as a transferred electron device (TED), is a form of diode, a two-terminal semiconductor electronic component, with negative resistance, used in high-frequency electronics. It is based on the "Gunn effect" discovered in 1962 by physicist J. B. Gunn. Its largest use is in electronic oscillators to generate microwaves, in applications such as radar speed guns, microwave relay data link transmitters, and automatic door openers. Its internal construction is unlike other diodes in that it consists only of N-doped semiconductor material, whereas most diodes consist of both P and N-doped regions. It therefore conducts in both directions and cannot rectify alternating current like other diodes, which is why some sources do not use the term ''diode'' but prefer TED. In the Gunn diode, three regions exist: two of those are heavily N-doped on each terminal, with a thin layer of lightly n-doped material between. When a voltage is applied to the device, the electrical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ridley Watkins Hilsum Theory
Ridley may refer to: Education * Ridley College, a university preparatory boarding and day school located in St. Catharines, Ontario, Canada * Ridley College (Melbourne), an evangelical theological college in Melbourne, Australia * Ridley Hall, Cambridge, a theological college in the evangelical tradition of the Church of England (named for the martyr bishop Nicholas) * Ridley School District, in Pennsylvania, United States * Ridley High School, in Folsom, Pennsylvania, United States Entertainment * Ridley (Metroid), a recurring antagonist from the ''Metroid'' video game series * Ridley Jones, an American animated television series * Ridley Silverlake, the female protagonist in the PS2 game ''Radiata Stories'' * ''Ridley'' (TV series), a 2022 British television crime drama series Places * Ridley, Cheshire, England, United Kingdom, a civil parish * Ridley, Kent, England, United Kingdom, a place and former civil parish * Ridley, Northumberland, England, United Kingdom, a hamlet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gallium Arsenide
Gallium arsenide (GaAs) is a III-V direct band gap semiconductor with a Zincblende (crystal structure), zinc blende crystal structure. Gallium arsenide is used in the manufacture of devices such as microwave frequency integrated circuits, monolithic microwave integrated circuits, infrared light-emitting diodes, laser diodes, solar cells and optical windows. GaAs is often used as a substrate material for the epitaxial growth of other III-V semiconductors, including indium gallium arsenide, aluminum gallium arsenide and others. Preparation and chemistry In the compound, gallium has a +3 oxidation state. Gallium arsenide single crystals can be prepared by three industrial processes: * The vertical gradient freeze (VGF) process. * Crystal growth using a horizontal zone furnace in the Bridgman-Stockbarger technique, in which gallium and arsenic vapors react, and free molecules deposit on a seed crystal at the cooler end of the furnace. * Liquid encapsulated Czochralski process, Czoch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Defence (United Kingdom)
The Ministry of Defence (MOD or MoD) is the department responsible for implementing the defence policy set by His Majesty's Government, and is the headquarters of the British Armed Forces. The MOD states that its principal objectives are to defend the United Kingdom of Great Britain and Northern Ireland and its interests and to strengthen international peace and stability. The MOD also manages day-to-day running of the armed forces, contingency planning and defence procurement. The expenditure, administration and policy of the MOD are scrutinised by the Defence Select Committee, except for Defence Intelligence which instead falls under the Intelligence and Security Committee of Parliament. History During the 1920s and 1930s, British civil servants and politicians, looking back at the performance of the state during the First World War, concluded that there was a need for greater co-ordination between the three services that made up the armed forces of the United Kingdom: t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biographical Memoirs Of Fellows Of The Royal Society
The ''Biographical Memoirs of Fellows of the Royal Society'' is an academic journal on the history of science published annually by the Royal Society. It publishes obituaries of Fellows of the Royal Society. It was established in 1932 as ''Obituary Notices of Fellows of the Royal Society'' and obtained its current title in 1955, with volume numbering restarting at 1. Prior to 1932, obituaries were published in the ''Proceedings of the Royal Society''. The memoirs are a significant historical record and most include a full bibliography of works by the subjects. The memoirs are often written by a scientist of the next generation, often one of the subject's own former students, or a close colleague. In many cases the author is also a Fellow. Notable biographies published in this journal include Albert Einstein, Alan Turing, Bertrand Russell, Claude Shannon, Clement Attlee, Ernst Mayr, and Erwin Schrödinger. Each year around 40 to 50 memoirs of deceased Fellows of the Royal Soci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Guardian
''The Guardian'' is a British daily newspaper. It was founded in 1821 as ''The Manchester Guardian'', and changed its name in 1959. Along with its sister papers ''The Observer'' and ''The Guardian Weekly'', ''The Guardian'' is part of the Guardian Media Group, owned by the Scott Trust. The trust was created in 1936 to "secure the financial and editorial independence of ''The Guardian'' in perpetuity and to safeguard the journalistic freedom and liberal values of ''The Guardian'' free from commercial or political interference". The trust was converted into a limited company in 2008, with a constitution written so as to maintain for ''The Guardian'' the same protections as were built into the structure of the Scott Trust by its creators. Profits are reinvested in journalism rather than distributed to owners or shareholders. It is considered a newspaper of record in the UK. The editor-in-chief Katharine Viner succeeded Alan Rusbridger in 2015. Since 2018, the paper's main news ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gareth Roberts (physicist)
Sir Gareth Gwyn Roberts (16 May 1940 – 6 February 2007) was a Welsh physicist specialising in semiconductors and molecular electronics, who was influential in British science policy through his chairmanship of several academic bodies and his two reports on the future supply of scientists and how university research should be assessed. He was knighted in 1997 for his services to higher education. Academic and public service career Born in Penmaenmawr, Caernarvonshire, North Wales, he studied physics to PhD level at the University College of North Wales, Bangor, graduating in 1964. Following a post at the New University of Ulster, he was appointed Professor of Applied Physics at the University of Durham in 1976, where he was elected a Fellow of the Royal Society in 1984. He went back into industry in 1985 as director of research at Thorn EMI plc, and was appointed to a visiting professorship in the Department of Engineering Science at Oxford and to a Fellowship at Brasenos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Women's Engineering Society
The Women's Engineering Society is a United Kingdom professional learned society and networking body for women engineers, scientists and technologists. It was the first professional body set up for women working in all areas of engineering, predating the Society of Women Engineers by around 30 years. History The society was formed on 23rd June 1919, after the First World War, during which many women had taken up roles in engineering to replace men who were involved in the military effort. While it had been seen as necessary to bring women into engineering to fill the gap left by men joining the armed forces, the government, employers, and trades unions were against the continuing employment of women after the war. The Restoration of Pre-War Practices Act 1919 gave soldiers returning from World War I their pre-war jobs back and meant many women could no longer work in roles they were employed to fill during the war. This led a group of seven women, including Lady Katharine Parso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karen Burt
Karen Ann Hilsum Burt (née Hilsum) CPhys MInstP (26 Nov 1954 - 20 June 1997) was a British engineer and campaigner for the recruitment and retention of women in engineering. Early life and education Burt attended Hillside School, Malvern and Worcester Girl's Grammar School. She studied at Newnham College, Cambridge and completed a PhD in electron microscopy at the University of Reading. Career Burt joined British Aerospace as a project engineer for scientific satellites, and was eventually promoted to senior systems engineer. Subsequently, she developed an interest in management, becoming a Business Acquisition Manager. Burt left British Aerospace and established her own consultancy. In addition, she helped University College London establish the Centre for Advanced Instrumentation Systems. She contributed to the Women's Engineering Society, Institute of Physics and Institute of Electrical and Electronics Engineers. In 1983 and 1984 Burt presented a Faraday Lecture, ''Le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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