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Bernard Gregory
Bernard Gregory (19 January 1919, in Bergerac – 24 December 1977, in Élancourt) was a prominent French physicist and director-general of CERN. During World War II, Gregory was a prisoner of war in a German camp for military officers. After the war he graduated from the École Polytechnique and École Nationale Supérieure des Mines de Paris, then went to the United States to study fundamental particle interactions in high-energy cosmic rays. After earning his Ph.D. in 1950 at MIT, under the supervision of Professor Bruno Rossi, Gregory returned to France. He became known in the high energy physics world in the 1950s when he worked as a researcher, with the title of deputy director, under Professor Leprince- Ringuet at the École Polytechnique. At the École Polytechnique he worked with a number of physicists including , Jean Crussard (1911-1986), André Lagarrigue, and later André Astier. In 1958, Gregory was appointed professor of physics at the Polytechni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bergerac, Dordogne
Bergerac (; ) is a subprefecture of the Dordogne department, in the region of Nouvelle-Aquitaine, Southwestern France. In 2018, the commune had a population of 26,823, which made it the department's second-most populated after the prefecture Périgueux. Located on the banks of the river Dordogne, Bergerac was designated a Town of Art and History by the Ministry of Culture in 2013. History In 1565, Charles IX of France visited Bergerac during his grand tour. On 17 September 1577, amidst the French Wars of Religion, the Treaty of Bergerac, also known as the Peace of Bergerac ( French: ''Paix de Bergerac''), was signed between Henri III of France and Protestants to put a temporary end to the conflict. The treaty was negotiated by important figures on each side of the conflict, namely Nicolas de Neufville, seigneur de Villeroy and Armand de Gontaut, baron de Biron on the King's side and François de la Noue and François, Duke of Montpensier on the Protestant side. Bergerac, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Crussard
Jean may refer to: People * Jean (female given name) * Jean (male given name) * Jean (surname) Fictional characters * Jean Grey, a Marvel Comics character * Jean Valjean, fictional character in novel ''Les Misérables'' and its adaptations * Jean Pierre Polnareff, a fictional character from ''JoJo's Bizarre Adventure'' Places * Jean, Nevada, USA; a town * Jean, Oregon, USA Entertainment * Jean (dog), a female collie in silent films * "Jean" (song) (1969), by Rod McKuen, also recorded by Oliver * ''Jean Seberg'' (musical), a 1983 musical by Marvin Hamlisch Other uses * JEAN (programming language) * USS ''Jean'' (ID-1308), American cargo ship c. 1918 * Sternwheeler Jean, a 1938 paddleboat of the Willamette River See also *Jehan * * Gene (other) * Jeanne (other) * Jehanne (other) * Jeans (other) * John (other) John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Adams (physicist)
Sir John Bertram Adams (24 May 1920 – 3 March 1984) was an English accelerator physicist and administrator. Adams is mostly known for his work at CERN and Culham Laboratory. Despite a lack of formal university education, Adams worked for organizations like the Telecommunications Research Establishment and the Atomic Energy Research Establishment in the 1940s and early 1950s. He served as acting director and eventually as elected director of CERN, from 1976 until 1981. Biography Early life Born in Kingston, Surrey on May 24, 1920. He attend Eltham College from 1931 until 1936, after which he began to work for Siemens Laboratories in Woolwich. He continued studying at the South East London Technical Institute until 1939 earning a Higher National Certificate. This was the end of his formal education receiving no university education. Professional career at Siemens, his work was concerned with the acoustic properties of telephones. Between 1940 and 1945, he worked th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willibald Jentschke
Willibald Jentschke (Vienna, Austria-Hungary, 6 December 1911 – Göttingen, Germany, 11 March 2002) was an Austrian-German experimental nuclear physicist. During World War II, he made contributions to the German nuclear energy project. After World War II, he emigrated to the United States to work at Wright-Patterson Air Force Base, in Ohio, for the Air Force Materiel Command. In 1950, he became a professor at the University of Illinois at Urbana–Champaign, where he became director of the Cyclotron Laboratory there in 1951. In 1956, he became a professor of physics at the University of Hamburg and spearheaded the effort to build the 7.5 GeV electron synchrotron DESY, the foundation of which was in December 1959. He was director of DESY for 10 years. In 1971, he became Director General of CERN Laboratory I for the next five years. He retired from the University of Hamburg in 1980. Education Jentschke studied physics at the University of Vienna, from 1930 to 1936. He r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victor Frederick Weisskopf
Victor Frederick "Viki" Weisskopf (also spelled Viktor; September 19, 1908 – April 22, 2002) was an Austrian-born American theoretical physicist. He did postdoctoral work with Werner Heisenberg, Erwin Schrödinger, Wolfgang Pauli, and Niels Bohr. During World War II he was Group Leader of the Theoretical Division of the Manhattan Project at Los Alamos, and he later campaigned against the proliferation of nuclear weapons. Biography Weisskopf was born in Vienna to Jewish parents and earned his doctorate in physics at the University of Göttingen in Germany in 1931. His brilliance in physics led to work with the great physicists exploring the atom, especially Niels Bohr, who mentored Weisskopf at his institute in Copenhagen. By the late 1930s, he realized that, as a Jew, he needed to get out of Europe. Bohr helped him find a position in the United States. In the 1930s and 1940s, "Viki", as everyone called him, made major contributions to the development of quantum theory, espe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Center For Scientific Research
The French National Centre for Scientific Research (french: link=no, Centre national de la recherche scientifique, CNRS) is the French state research organisation and is the largest fundamental science agency in Europe. In 2016, it employed 31,637 staff, including 11,137 tenured researchers, 13,415 engineers and technical staff, and 7,085 contractual workers. It is headquartered in Paris and has administrative offices in Brussels, Beijing, Tokyo, Singapore, Washington, D.C., Bonn, Moscow, Tunis, Johannesburg, Santiago de Chile, Israel, and New Delhi. From 2009 to 2016, the CNRS was ranked No. 1 worldwide by the SCImago Institutions Rankings (SIR), an international ranking of research-focused institutions, including universities, national research centers, and companies such as Facebook or Google. The CNRS ranked No. 2 between 2017 and 2021, then No. 3 in 2022 in the same SIR, after the Chinese Academy of Sciences and before universities such as Harvard University, MIT, or Stanf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intersecting Storage Rings
The ISR (standing for "Intersecting Storage Rings") was a particle accelerator at CERN. It was the world's first hadron collider, and ran from 1971 to 1984, with a maximum center of mass energy of 62 GeV. From its initial startup, the collider itself had the capability to produce particles like the J/ψ and the upsilon, as well as observable jet structure; however, the particle detector experiments were not configured to observe events with large momentum transverse to the beamline, leaving these discoveries to be made at other experiments in the mid-1970s. Nevertheless, the construction of the ISR involved many advances in accelerator physics, including the first use of stochastic cooling, and it held the record for luminosity at a hadron collider until surpassed by the Tevatron in 2004. History The ISR was proposed in 1964 for conducting the head-on proton-proton collisions at a beam energy of 28 GeV; to the study of the new particles created in such collisions.&nb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadron Collider
A hadron collider is a very large particle accelerator built to test the predictions of various theories in particle physics, high-energy physics or nuclear physics by colliding hadrons. A hadron collider uses tunnels to accelerate, store, and collide two particle beams. Colliders Only a few hadron colliders have been built. These are: * Intersecting Storage Rings (ISR), European Organization for Nuclear Research (CERN), in operation 1971–1984. * Super Proton Synchrotron (SPS), CERN, used as a hadron collider 1981–1991. * Tevatron, Fermi National Accelerator Laboratory (Fermilab), in operation 1983–2011. * Relativistic Heavy Ion Collider (RHIC), Brookhaven National Laboratory, in operation since 2000. * Large Hadron Collider (LHC), CERN, in operation since 2008. See also *Synchrotron A synchrotron is a particular type of cyclic particle accelerator, descended from the cyclotron, in which the accelerating particle beam travels around a fixed closed-loop path. The mag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geneva
Geneva ( ; french: Genève ) frp, Genèva ; german: link=no, Genf ; it, Ginevra ; rm, Genevra is the second-most populous city in Switzerland (after Zürich) and the most populous city of Romandy, the French-speaking part of Switzerland. Situated in the south west of the country, where the Rhône exits Lake Geneva, it is the capital of the Republic and Canton of Geneva. The city of Geneva () had a population 201,818 in 2019 (Jan. estimate) within its small municipal territory of , but the Canton of Geneva (the city and its closest Swiss suburbs and exurbs) had a population of 499,480 (Jan. 2019 estimate) over , and together with the suburbs and exurbs located in the canton of Vaud and in the French departments of Ain and Haute-Savoie the cross-border Geneva metropolitan area as officially defined by Eurostat, which extends over ,As of 2020, the Eurostat-defined Functional Urban Area of Geneva was made up of 93 Swiss communes and 158 French communesFederal Statistical O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proton Synchrotron
The Proton Synchrotron (PS, sometimes also referred to as CPS) is a particle accelerator at CERN. It is CERN's first synchrotron, beginning its operation in 1959. For a brief period the PS was the world's highest energy particle accelerator. It has since served as a pre-accelerator for the Intersecting Storage Rings (ISR) and the Super Proton Synchrotron (SPS), and is currently part of the Large Hadron Collider (LHC) accelerator complex. In addition to protons, PS has accelerated alpha particles, oxygen and sulfur nuclei, electrons, positrons, and antiprotons. Today, the PS is part of CERN's accelerator complex. It accelerates protons for the LHC as well as a number of other experimental facilities at CERN. Using a negative hydrogen ion source, the ions are first accelerated to the energy of 160 MeV in the linear accelerator Linac 4. The hydrogen ion is then stripped of both electrons, leaving only the nucleus containing one proton, which is injected into the Proton Synchrotron B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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