primary sources date August 2008 Image DESY sign Hamburg.jpg thumb 250px Sign at the entrance of DESY in Hamburg. The DESY D eutsches E lektronen Sy nchrotron, German Electron Synchrotron is the biggest German research center for particle physics , with sites in Hamburg and Zeuthen . DESY s main purposes are fundamental research in particle physics and research with synchrotron radiation . For this DESY develops and runs several particle accelerator s. DESY is financed by the public authorities and is a member of the Helmholtz Association of German Research Centres . DESY was founded on 18 December ... Balke and Hamburg s mayor Max Brauer . Functions DESY s function is scientific fundamental research ... biology , geophysics and medicine . Sites DESY consists of two sites, a larger one in Hamburg, a smaller one in Zeuthen, both in Germany. Hamburg The DESY site in Hamburg is located in the suburb ... km of the ring run under the Altonaer Volkspark . At the site in Hamburg most of DESY s research ... is meant to secure DESY s future place among the top research centers of the world. Zeuthen On 1 January 1992 DESY got a second site with the Institute for High Energy Physics at Zeuthen Institut f r Hochenergiephysik IfH . DESY Zeuthen is currently contributing to the experiments at HERA in Hamburg for example by evaluating data. It is also collaborating with DESY Hamburg in the development of the XFEL ... of DESY s research rather unusual projects For neutrino astrophysics DESY Zeuthen made some major ... of public funding. Employees and Training All in all 1560 people are employed at DESY, of which 365 ... who are supervised by DESY. International Co operation Image DESY1.jpg thumb Segment of a particle accelerator at DESY 2900 scientists from 33 nations participate in the research at DESY. Hereof ... and Experiments at DESY Image Desy.jpg thumb German 1984 postal stamp 25th anniversary of DESY s foundation DESY s accelerators were not built all at once, but rather were added one by one ... more details
DORIS may refer to DESY DORIS III DORIS , or Do ppel Ri ng S peicher, a storage ring for particles at DESY . DESY DORIS III DORIS II , the second incarnation of DORIS. DESY DORIS III DORIS III , the current incarnation of DORIS. DORIS geodesy , or D oppler O rbitography and R adiopositioning I ntegrated by S atellite, a French satellite system used for the determination of satellite orbits and for positioning. disambig ... more details
About the accelerator based x ray laser the superhero Flash comics other uses Flash disambiguation unreferenced date January 2011 FLASH , acronym of F ree Electron LAS er in H amburg , a particle accelerator based soft x ray laser located at the DESY accelerator facilities in Hamburg , Germany . It can generate very powerful, ultrashort pulses 10 sup 14 sup s of coherent radiation in the energy range 10 eV electronvolt to 200 eV. It started operation for external users in the year 2005 and is used for surface, molecular and atomic physics experiments. Intended applications are also the imaging of single biological complex molecule s with time resolution. References Reflist External links http flash.desy.de FLASH website http zms.desy.de about desy index eng.html DESY website DEFAULTSORT Flash Category Particle physics facilities physics stub ... more details
About Physics Petra disambiguation PETRA or the Positron Electron Tandem Ring Accelerator is one of the particle accelerator s at DESY in Hamburg , Germany . From 1978 to 1986 it was used to study electron positron collisions. It was here that the TASSO collaboration found the first direct evidence for gluon s in three jet events . ref name 25YoG cite journal author I. Flegel, P. S ding year 2004 title Twenty Five Years of Gluons url http cerncourier.com cws article cern 29201 journal Cern Courrier volume 44 issue 9 pages doi ref The modification called PETRA II is a source of high energy synchrotron radiation and also a pre accelerator for the HERA . Started in 2007, an upgrade has been converting it to PETRA III, which is a high intensity source for synchrotron radiation . References Reflist Further reading cite journal author P. S ding year 2010 title On the discovery of the gluon journal European Physical Journal H volume 35 issue 1 pages 3 28 doi 10.1140 epjh e2010 00002 5 bibcode 2010EPJH...35....3S External links http petra3.desy.de The New Synchrotron Radiation Source at DESY PETRA III at the DESY website coord missing Hamburg DEFAULTSORT Petra Category Particle physics facilities Category Gluons Category Buildings and structures in Hamburg Category Synchrotron radiation facilities Physics stub Hamburg struct stub pt PETRA ... more details
ARGUS , all capitalized, may refer to ARGUS experiment , a particle physics experiment that ran at DESY ARGUS distribution , a function used in particle physics named after the above experiment An aqueous homogeneous nuclear reactor called Aqueous Homogeneous Reactor The ARGUS reactor ARGUS at the Russian Research Centre, Kurchatov Institute Honeywell ARGUS , an assembly language See also Argus disambiguation The Argus disambiguation disambig ... more details
Self amplified stimulated or spontaneous emission SASE is a process within a free electron laser FEL by which a laser beam is created by the high energy electron beam . The lasing starts up from the random microbunching i.e., shot noise on the electron beam instead of being coherently produced by an input seed laser source. This source is fully transversely coherent at saturation, but, because the radiation starts from random noise at many radiation wavelengths, the longitudinal coherence of the radiation is less than that of the amplifier case but better than that of spontaneous radiation. This concept has been demonstrated at the SPring 8 FEL in Japan ref Cite web title Spring 8 Webpage url http www xfel.spring8.or.jp format accessdate 2007 12 21 ref , the Free electron LASer DESY Particle Accelerators, Facilities and Experiments at DESY FLASH in Hamburg and the SLAC National Accelerator Laboratory LCLS Linac Coherent Light Source LCLS at SLAC. See also List of laser articles References Reflist Category Physics Category Electromagnetic radiation Physics stub ru ... more details
dablink This article is about a particle physics experiment. For nuclear weapons tests, see Operation Argus . The ARGUS experiment was a particle physics experiment that ran at the electron positron collider ring DORIS II at DESY . It is the first experiment that observed the mixing of the B meson s in 1987 ref ARGUS Collaboration, DESY preprint 87 029, April 1987. Published in Phys.Lett.B192 245,1987. ref . The ARGUS detector was a hermetic detector with 90 coverage of the full solid angle. It had drift chamber s, a time of flight system, an electromagnetic Calorimeter particle physics calorimeter and a muon chamber system. ref The ARGUS Collaboration, H. Albrecht et al., Nucl. Instrum. Methods A 275 1 1989 , p. 1 48. ref External links http argus fest.desy.de introduction.html Webpage of ARGUS Fest , a symposium to commemorate the 20th anniversary of the discovery of B meson oscillations. Last accessed on Sept. 10, 2007 References references DEFAULTSORT Argus Experiment Category Particle physics particle stub ... more details
. In 1980, this idea took concrete form with the creation at DESY of the Hadron Elektron Ring Anlage ... press release title DESY mourns for Prof. Dr. Bj rn H. Wiik publisher DESY date February 27, 1999 url http zms.desy.de press pressreleases 1999nbsp the head of the desy directorate died as a result ... http zms.desy.de press pressreleases 1999nbsp the head of the desy directorate died as a result ... more details
File Rolf Dieter Heuer.jpg thumb Director General of CERN, Rolf Dieter Heuer, during an interview at Fermilab Rolf Dieter Heuer IPA de lf di t h born 24 May 1948 in Bad Boll Boll is a German particle physics particle physicist and the List of Directors General of CERN Director General of CERN since 2009. Heuer studied physics at the University of Stuttgart . He then obtained his PhD 1977 at the University of Heidelberg under Joachim Heintze for his study of neutral decay modes of the J particle &Psi 3686 . His post doc studies include the JADE particle detector JADE experiment at the electron positron storage ring PETRA at DESY , and from 1984, at the OPAL CERN OPAL experiment at CERN , where he also became spokesperson of the OPAL collaboration for many years. Having been offered a full professorship for experimental physics at the University of Hamburg , Heuer returned to DESY in 1998. In 2004, he was appointed DESY s Research Director. In December 2007, the CERN research council announced that Heuer will take office as List of Directors General of CERN CERN s Director General starting 1 January 2009, following the term of Robert Aymar . On 19 July 2011, Heuer was awarded an honorary doctorate by the University of Liverpool . In his speech to the graduands he spoke of the need to bring science into mainstream culture. References http www.interactions.org cms ?pid 1015461 Professor Dr. Rolf Dieter Heuer Appointed as New Research Director , DESY Press Release, Hamburg, 4 October 2004 http zms.desy.de press pressreleases 2007 pr 141207 index eng.html Rolf Dieter Heuer to be New CERN Director General , DESY Press Releases, Hamburg, 14 December 2007 http unesdoc.unesco.org images 0019 001906 190645e.pdf UNESCO and CERN like hooked atoms Jasmina Sopova meets Rolf Dieter Heuer , in Chemistry and life , The UNESCO Courier , January March, 2011, pp. 48 50. s start s bus s bef before Robert Aymar s ttl title CERN director Director General of CERN years 1 January 2 ... more details
HERA B was an innovative, but ultimately unsuccessful, particle physics detector of the HERA accelerator at DESY . ref http www.slac.stanford.edu spires find experiments www2?ee DESY HERA B Description of HERA B on SPIRES ref Its primary aim was to measure CP violation in the decays of heavy B mesons in the late 1990s, several years ahead of the Large Hadron Collider and B Factory programs. Unlike most particle physics detectors, the particles were produced not by colliding two circulating beams head on, nor by slamming the beam into a stationary target, but by moving a thin wire target directly into the waste halo of the circulating proton beam of the HERA accelerator. The beam was unaffected by this scraping but the collision rate produced could be made extremely high, around 5 to 10 million interactions per second 5 10 Megahertz MHz . A novel scheme for moving the wires and the vertex detectors very close to the beam less than one centimetre , using a vacuum chamber and motorised arms , had to be developed. External links http www hera b.desy.de general info HERA B webpage References references DEFAULTSORT Hera B Category Particle experiments ... more details
The TASSO collaboration refers to the group of people working on the TASSO detector, at PETRA , at DESY . They are famous for having discovered the gluon , the mediator of the strong interaction and carrier of the color charge . ref name 25YoG cite web title Twenty Five Years of Gluons url http cerncourier.com cws article cern 29201 publisher Cern Courrier year 2004 author Flegel, I S ding, P location DESY ref Four of them, Paul S ding , Bj rn Wiik Bj rn Wiik , G nter Wolf , and Sau Lan Wu , were award the Prize for High Energy and Particle Physics from CERN in 1995. A special prize was also awarded to the TASSO collaboration, as well as the PETRA , JADE , MARK J , and PLUTO experiment PLUTO collaborations, in recognition of their combined work on the gluon as the definite existence of the gluon emerged gradually from the results of the TASSO collaboration and the other experiments working at PETRA, JADE, MARK J and PLUTO . ref name 25YoG See also Gluon Particle physics References reflist Further reading cite journal author P. S ding year 2010 title On the discovery of the gluon journal European Physical Journal H volume 35 issue 1 pages 3 28 doi 10.1140 epjh e2010 00002 5 bibcode 2010EPJH...35....3S DEFAULTSORT Tasso Category Particle experiments Category Gluons ... more details
. They were then injected into the proton synchrotron DESY III and accelerated further to 7 GeV. Then they were ... index eng.html Accelerators Page at DESY, Hamburg Site of HERA deadlink date October 2011 coord ... more details
Jean D sy January 8, 1893 &ndash December 19, 1960 was a Canada Canadian diplomat . Born in Montreal, Quebec , he studied law at Universit Laval and the University of Paris Sorbonne in Paris. From 1919 to 1925, he taught history and law at the Universit de Montr al . D sy was recruited by Oscar D. Skelton , Under Secretary of State for Foreign Affairs, in 1925 to fill the position of Counsellor in Canada s new foreign service. He was posted to the Paris legation in 1928 and served on many delegations abroad. In January 1939 D sy was appointed Canada s first ambassador to Belgium and the Netherlands , and the first envoy to Brazil in June 1941. Named ambassador in late 1943, he was the first Canadian career diplomat to be named an ambassador earlier ambassadors were political appointments . In September 1947 he was named Canada s first minister to Italy . In January 1952 he was seconded by the government to direct the Canadian Broadcasting Corporation s International Service later Radio Canada International to remove what was perceived as a left wing bias in its reporting. D sy finished his career in Paris as ambassador to France 1954 57, where he died in 1960. External links http www.dfait maeci.gc.ca canada magazine issue08 8t8 en.asp Canada World View, Issue 8, Summer 2000 profile start box s dip succession box title List of Canadian ambassadors to France Ambassador to France before Georges Vanier after Pierre Dupuy diplomat Pierre Dupuy years 1954 1957 end box Persondata Metadata see Wikipedia Persondata . NAME Desy, Jean ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH January 8, 1893 PLACE OF BIRTH DATE OF DEATH December 19, 1960 PLACE OF DEATH DEFAULTSORT Desy, Jean Category 1893 births Category 1960 deaths Category University of Paris alumni Category Ambassadors of Canada to France Category People from Montreal ... more details
Image PITZ.JPG thumb right 150px PITZ setup. The Photo Injector Test Facility at the DESY location in Zeuthen PITZ was built in order to test and to optimize sources of high brightness electron beams for future free electron lasers Free electron laser FELs and linear colliders. The focus at PITZ is on the production of intense electron beams with very small transverse emittance and reasonably small longitudinal emittance which are required in order to meet the high gain conditions of Free electron laser FEL operation. This challenge is met by applying the most advanced techniques in combination with key parameters of projects based on TESLA technology like FLASH and the XFEL . PITZ Collaboration Berliner Elektronenspeicherring Gesellschaft f r Synchrotronstrahlung BESSY Council for the Central Laboratory of the Research Councils CCLRC Daresbury Laboratory Deutsches Elektronen Synchrotron in der Helmholtz Gemeinschaft DESY Forschungszentrum Dresden Rossendorf FZD Humboldt Universit t zu Berlin Laboratori Nationali di Frascati INFN Laboratorio Acceleratori e Superconduttivita Applicata INFN, LASA , Milano Institute for Nuclear Research Institute for Nuclear Research INR , Troitsk Institute for Nuclear Research and Nuclear Energy INRNE , Sofia Yerevan Physics Institute YERPHI Laboratoire de l acc l rateur lin aire Laboratoire de l acc l rateur lin aire LAL , Orsay Max Born Institut MBI , Berlin Technische Universit t Darmstadt Darmstadt University of Technology TUD Institut f r Theorie Elektromagnetischer Felder Universit t Hamburg External links PITZ http pitz.desy.de PITZ &mdash Official PITZ group website FELs http flash.desy.de FLASH http xfel.desy.de European X Ray Free Electron Laser Category Experimental particle physics ... more details
JADE was a particle detector at the particle accelerator PETRA at DESY , Hamburg . It was operated from 1979 to 1986. JADE s most important scientific achievement was the discovery of the gluon in three jet events . It also helped greatly in establishing quantum chromodynamics . JADE is an acronym for Ja pan, D eutschland, and E ngland, the three countries from which the participating universities originated. The JADE jet chamber is now exhibited in the physics lecture hall at the University of Heidelberg . Although the last data taken with JADE are 20 years old, analysis continues with the most recent paper published in 2005. External links http www.icepp.s.u tokyo.ac.jp history jade e.html A brief history of JADE at the ICEPP, Japan http de.arxiv.org abs hep ex 0505026 New QCD tests with old JADE data http wwwjade.mppmu.mpg.de Old homepage of the JADE Revival Project Category Particle experiments ... more details
PLUTO , constructed at DESY laboratories in Hamburg in 1973 1974 and substantially upgraded in 1977 1978, was an experimental detector for high energy particle physics . Experimental detector PLUTO was the first electromagnetic Superconductivity superconductive solenoid in the world, with a magnetic field of 12000 Gauss, to operate in a straight section of e sup sup e sup &minus sup accelerators at DESY , first with DORIS I a storage ring at center of mass energies of 3 5 GeV in 1974 1976, then with DORIS II the upgraded storage ring of DORIS I at center of mass energies of 7 10 Gev in 1978 and later with PETRA also a storage ring, at larger center of mass energies of 10 45 GeV in 1978 1982 see review ref name CKP cite journal author L. Criegee and G. Knies year 1982 title e sup sup e sup &minus sup physics with the PLUTO detector journal Physics Reports volume 83 pages 151 280 doi 10.1016 0370 1573 82 90012 6 ref . Experimental results The experimental collaboration PLUTO, first with about 35 German physicists from Institutes of Aachen, DESY, Hamburg, Wuppertal and Siegen, enlarged subsequently by international colleagues from Universities in USA, Great Britain, Italy and Israel, investigated the e sup sup e sup &minus sup physics in a wide range of partly unexplored energies, contributed effectively to new physics by the exploration of the just discovered charm quark and tau lepton , added important knowledge to electroweak and strong interaction s see review ref name CKP and discovered new phenomena see recollection ref name SMY cite journal author B.R. Stella and H. J. Meyer year 2011 2012 title Y 9.46 GeV and the gluon discovery a critical recollection of PLUTO results journal European Physical Journal H volume 36 pages 203 243 doi 10.1140 epjh e2011 10029 3 arxiv 1008.1869v3 ref by demonstrating that the Y 9.46 GeV is a very narrow bottom antibottom new quark resonance found together with an other experiment at DORIS , the Y decays hadronically mostly approx. 97 ... more details
otheruses Zeus disambiguation Image Zeus hall.JPG thumb right The DESY South Hall where the ZEUS experiment was located. ZEUS was a particle detector that operated on the Hadron Elektron Ring Anlage HERA Hadron Elektron Ring Anlage particle accelerator at DESY , Hamburg . It began running together with HERA in 1992 and was functional until HERA was decommissioned in June 2007. The scientific collaboration behind ZEUS consisted of about 400 physicist s from 56 institute s in 17 country countries ref name Members cite web title Institutes taking part in the ZEUS Collaboration work The ZEUS Experiment url http www zeus.desy.de institutes.php3 ref . The ZEUS detector comprised many components, including a depleted uranium plastic scintillator calorimeter , a central tracking detector which is a wire chamber , a silicon microvertex detector and muon chamber s. In addition, a solenoid provides a val 1.43 u Tesla unit T magnetic field . The ZEUS experiment studied the internal structure of the proton through measurements of deep inelastic scattering by colliding leptons electron s or positron s with proton in the interaction point of ZEUS. These measurements were also used to test and study the Standard Model of particle physics , as well as searching for particles beyond the Standard Model. Background DESY was founded in 1959 and started colliding electron beams in 1964 in the DESY experiment. Since then, it has been a highly regarded center for particle physics . The design effort for ZEUS can be traced back to 1982 ref cite techreport title Electron Proton Interaction Experiment publisher FermiLab month May year 1982 url http lss.fnal.gov archive test proposal 0000 fermilab proposal 0719.pdf ref , a Letter of Intent was submitted in 1985 ref name ZEUSLOI cite techreport title ZEUS A Detector for HERA, Letter of Intent last1 ZEUS Collaboration K. Edwards last2 Edwards first2 K. last3 Kapitza first3 H. issue DESY HERA LI 1 type Report month June year 1985 ref , and the HERA ... more details
vortraege biografie index ger.html Willibald Jentschke Biografi DESY . ref During 1956 and 1957, Jentschke ... on 18 December 1959, which founded the DESY Deutsches Elektronen Synchrotron DESY , a 7.5 electronvolt GeV electron synchrotron . Jentschke was chairman of the DESY Board of Directors from 1959 to 1970 ... of Hamburg. While at DESY, Jentschke endorsed the electron positron storage ring scheme for the DORIS ... Hentschel 1996 ref name Willibald Jentschke ref name hasylab.desy.de DESY mourns for Professor Dr. Dr. h.c. Willibald Jentschke, DESY s Founding Father died at the age of 90 , DESY Press Release 18.03.02 ... Jentschke Biografi DESY ref Member, de Akademie der Wissenschaften und der Literatur Akademie der ... index ger.html Willibald Jentschke Biografi DESY Gimbel, John Science, Technology, and Reparations ... more details
. By 1990, Shaun Ward and Desy Campbell worked under the name Everyday People with Paul Dolby ... instrument keyboards , guitar 1985 Desy Campbell vocals Michael Ward Horn instrument horns Rob Clarke ... more details
wiktionary tine Tine may have one of the following meanings Tine structural &ndash a prong on a fork or similar implement, or any similar structure Tine company &ndash the biggest dairy producer in Norway Tine band &ndash an American blackened death metal band Tine, North Darfur Tine &ndash a town in Sudan Tine test &ndash a medical test for tuberculosis Tine male name &ndash a Slovene male name Tine female name &ndash a Danish and Norwegian female name Tine &ndash a smallish animal Tine box &ndash a traditional Norwegian container made of bentwood Tine 2.0 &ndash an open source business software covering the software categories groupware and Customer Relationship Management Tine, a name in the Tiv language Tine, an alien race which is the focus of the award winning novel A Fire Upon the Deep and its sequel Children of the Sky Tine software , a Three fold Integrated Networking Environment developed and used at DESY Tine, a surname of the Serer people in West Africa. disambig da Tine de Tine Begriffskl rung fr Tine no Tine ... more details
HERMES was an experiment conducted using the Hadron Elektron Ring Anlage HERA particle accelerator located at DESY in Hamburg . The experiment s goal was to investigate the quark gluon structure of matter by examining how a nucleon s constituents affect its spin. HERMES completed its first run between 1995 and 2000, and a second run began in 2001 and ended during the summer of 2007. HERMES was conducted by scientist s from more than 13 countries. Method Polarized electrons are fired at polarized gas targets. The virtual photon emitted by the electron is also polarized and so seeks out quarks of spin in the same direction as the photon. The asymmetry of ejected quarks is found to deduce the net polarisation of the quarks. UGFS The unpolarized gas feed system was used for non polarized end of fill or heavy target running before the polarized target was removed in 2003. Currently the UGFS supplies the target gasses in the new detector configuration. See also CLAS detector CLAS LEPS HERA SVD experiment SVD References http www hermes.desy.de HERMES http www.markusehrenfried.de science physics hermes theheraaccelerat.html http www.markusehrenfried.de science physics hermes theheraaccelerat.html http nuclear.gla.ac.uk protopop teaching gui http nuclear.gla.ac.uk protopop teaching gui Category Particle experiments fr HERMES exp rience ... more details
Lev Okun is a Russian theoretical physicist . He was born in 1929 in the Soviet Union , and graduated from Moscow Mechanical Institute in 1953 where he was a student of Arcady Migdal and later a graduate student of Isaak Pomeranchuk . He has worked since 1954 at the Institute of Theoretical and Experimental Physics in Moscow and has published some 300 papers, and several books, on the theory of elementary particles. He has served as a member of the Scientific Policy Committees of CERN , SSC and DESY . He is a member of the Russian Academy of Sciences and the Academia Europea ,and an honorary member of the New York Academy of Sciences and a Fellow of the Institute of Physics . ref http www.worldscibooks.com physics 6833 lev.pdf ref He is held in high regard by colleagues such as Murray Gell Mann ref http www.worldscinet.com ijmpa 25 2520 S0217751X10050482.html Some Lessons from Sixty Years of Theorizing by Murray Gell Mann ref Awards and honors Pomeranchuk Prize 2008 Notes & References references Persondata Metadata see Wikipedia Persondata . NAME Okun, Lev ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH 1929 PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Okun, Lev Category 1929 births Category Russian physicists Category Members of the Russian Academy of Sciences Category Moscow Institute of Physics and Technology faculty Category Living people Category Theoretical physicists de Lew Borissowitsch Okun pt Lev Okun ru , uk ... more details
Peter S. Pershan is a prominent American physicist . Unsourced image removed Image Pershan.jpg thumb Faculty Photo Education and career Peter Pershan earned his B.S. at Polytechnic Institute of Brooklyn in 1956 and his Ph.D. in Physics at Harvard University in 1960 for nuclear magnetic resonance under the supervision of Nicolaas Bloembergen . After a short postdoctoral appointment with Bloembergen he was appointed an assistant professor at Harvard University, where he is now a Frank B. Baird, Jr. Professor of Science, at both Physics Department and Division of Engineering and Applied Sciences. Research Pershan began his career in nuclear magnetic resonance however, before moving on to other things, he and Bloembergen produced some of the first papers on non linear optics , a field for which Bloembergen later received Nobel Prize in Physics in 1981. He remained active in this field until the early 1980 s when he wrote a book on liquid crystals and moved into the then new field of synchrotron radiation . Along with Jens Als Nielsen , Pershan developed the first synchrotron x ray reflectometer for the study of the horizontal free surface of a liquid, and carried out the first synchrotron measurements on liquid surfaces at DESY HASYLAB HASYLAB , DESY in 1982. The liquid surface spectrometers now at Advanced Photon Source and the National Synchrotron Light Source are all variations of the HASYLAB instrument. Since 1982 Pershan has led the field in exploration of such diverse liquid surfaces as superfluid helium, water , and liquid metals . Aside from sabbaticals at the University of Paris , Brookhaven National Laboratory , and Ris National Laboratory Pershan has been at Harvard University where he has been a faculty member since 1961 since he arrived as a graduate student in September 1956. Books Peter Pershan is perhaps best known for his text on liquid crystals Structure of Liquid Crystal Phases , World Scientific, 1988 ISBN http www.amazon.com gp product 9971506688 9 ... more details
Deleted image removed File Quark spin yellow.jpg thumb right Nucleon spin structure Nucleon spin structure describes the partonic structure of nucleon proton and neutron intrinsic angular momentum Spin physics spin . The key question is how the nucleon s spin, whose magnitude is 1 2 , is carried by its constituent parton particle physics parton s quark s and gluon s . It was originally expected before the 1980s that quarks carry all of the nucleon spin, but later experiments contradict this expectation. In the late 1980s, the European Muon Collaboration EMC conducted experiments that suggested the spin carried by quarks is not sufficient to account for the total spin of the nucleons. This finding astonished particle physicists at that time, and the problem of where the missing spin lies is sometimes referred to as the proton spin crisis . Experimental research on these topics has been continued by the Spin Muon Collaboration SMC and the COMPASS experiment at CERN , experiments E154 and E155 at SLAC National Accelerator Laboratory SLAC , DESY HERMES HERMES at DESY , experiments at JLab and RHIC , and others. Global analysis of data from all major experiments confirmed the original EMC discovery and showed that the quark spin did contribute about 30 to the total spin of the nucleon. A major topic of modern particle physics is to find the missing angular momentum, which is believed to be carried either by gluon spin, or by gluon and quark orbital angular momentum. This fact is expressed by the sum rule, math frac 1 2 frac 1 2 Sigma q Sigma g L q L g. math The gluon spin components math Sigma g math are being measured by many experiments. Quark and gluon angular momenta will be studied by measuring so called generalized parton distributions GPD through deeply virtual compton scattering DVCS experiments, conducted mainly at JLab. External links http www.cerncourier.com main article 42 1 16 Polarized colliders may prove to be the key in mapping out proton spin structure h ... more details
about the album the single Weak in the Presence of Beauty song Infobox album See Wikipedia WikiProject Albums Name Weak in the Presence of Beauty Type Album Artist Floy Joy band Floy Joy Cover Floyjoyalbumweakinpresenceofbeauty.jpeg Released 1986 Genre Pop music Pop , Synth pop Length Label Virgin Records Producer Don Was Reviews Last album Into the Hot Floy Joy album Into the Hot br 1984 This album Weak in the Presence of Beauty br 1986 Next album Weak in the Presence of Beauty was the second and last album by synth pop band Floy Joy band Floy Joy . It was released in 1986 . The album featured the minor hit, Weak in the Presence of Beauty song Weak in the Presence of Beauty . ref cite web url http www.chartstats.com release.php?release 12909 title Floy Joy Weak In The Presence Of Beauty publisher Chart Stats date 1986 02 15 accessdate 2011 08 12 ref Unlike the previous album which featured Carroll Thompson on vocals, this album instead featured vocals from Desy Campbell instead. Although the album was overall unsuccessful, both original members Michael Ward and Shaun Ward would go on to form The Ward Brothers who had success with the single Cross That Bridge . ref cite web url http www.discogs.com title Database and Marketplace for Music on Vinyl, CD, Cassette, MP3 and More publisher Discogs date accessdate 2011 08 12 ref Friday Night was also released as a single to commercial failure. ref cite web url http www.discogs.com Floy Joy Friday Night In This Cold City release 2251583 title Floy Joy Friday Night In This Cold City Vinyl at Discogs publisher Discogs.com date accessdate 2011 08 12 ref Track listing All tracks written by Michael Ward and Robert E. Clarke except where noted Weak in the Presence of Beauty song Weak in the Presence of Beauty 3 28 Friday Night 6 36 Penny in My Pocket 4 22 Too Drunk to Funk 3 49 Ask The Lonely W. Stevenson I. Hunter 3 43 Chinese A Go Go 4 01 Crackdown 2 49 Walking in The Night 3 26 This is My Time Desy Campbell 1 59 It Makes No D ... more details
Encyclopedia
top
