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Hans Motz
Hans Motz (1 October 1909 – 6 August 1987) is known for his pioneering work at Stanford University on undulators which led to the development of the wiggler and the free-electron laser.Paolo Luchini, Hans Motz, ''Undulators and Free-electron Lasers'', Oxford University Press, 1990. Hans Motz was born in Vienna, and died in Oxford, England. He was survived by his widow Lotte Motz, his daughter Anna Motz, and his protégé of many years, George Purdy. On Oct. 19, 1942, he spoke on the topic “Is a ‘Mechanistic’ View of the Universe Scientifically Tenable?” at the Socratic Club in Oxford. In 1958 he was the Donald Pollock Reader in the Department of Engineering at Oxford University and also a member of St Catherine's Society, Oxford, which became St Catherine's College, Oxford in 1962, at which time he became a Fellow. In 1977 he became the only Full Professor (at that time) in the Department of Engineering. He has written a number of books, including ''The Physics of Lase ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stanford University
Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is considered among the most prestigious universities in the world. Stanford was founded in 1885 by Leland and Jane Stanford in memory of their only child, Leland Stanford Jr., who had died of typhoid fever at age 15 the previous year. Leland Stanford was a U.S. senator and former governor of California who made his fortune as a railroad tycoon. The school admitted its first students on October 1, 1891, as a coeducational and non-denominational institution. Stanford University struggled financially after the death of Leland Stanford in 1893 and again after much of the campus was damaged by the 1906 San Francisco earthquake. Following World War II, provost of Stanford Frederick Terman inspired and supported faculty and graduates' entrepreneu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Undulator
An undulator is an insertion device from high-energy physics and usually part of a larger installation, a synchrotron storage ring, or it may be a component of a free electron laser. It consists of a periodic structure of dipole magnets. These can be permanent magnets or superconducting magnets. The static magnetic field alternates along the length of the undulator with a wavelength \lambda_u. Electrons traversing the periodic magnet structure are forced to undergo oscillations and thus to radiate energy. The radiation produced in an undulator is very intense and concentrated in narrow energy bands in the spectrum. It is also collimated on the orbit plane of the electrons. This radiation is guided through beamlines for experiments in various scientific areas. The undulator strength parameter is: :K=\frac, where ''e'' is the electron charge, ''B'' is the magnetic field, ''\lambda_u'' is the spatial period of the undulator magnets, ''m_'' is the electron rest mass, and ''c'' is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wiggler (synchrotron)
A wiggler is an insertion device in a synchrotron. It is a series of magnets designed to periodically laterally deflect ('wiggle') a beam of charged particles (invariably electrons or positrons) inside a storage ring of a synchrotron. These deflections create a change in acceleration which in turn produces emission of broad synchrotron radiation tangent to the curve, much like that of a bending magnet, but the intensity is higher due to the contribution of many magnetic dipoles in the wiggler. Furthermore, as the wavelength (λ) is decreased this means the frequency (ƒ) has increased. This increase of frequency is directly proportional to energy, hence, the wiggler creates a wavelength of light with a larger energy. A wiggler has a broader spectrum of radiation than an undulator. Typically the magnets in a wiggler are arranged in a Halbach array. The design shown above is usually known as a Halbach wiggler. History The first suggestion of a wiggler magnet to produce s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free-electron Laser
A free-electron laser (FEL) is a (fourth generation) light source producing extremely brilliant and short pulses of radiation. An FEL functions and behaves in many ways like a laser, but instead of using stimulated emission from atomic or molecular excitations, it employs relativistic electrons as a gain medium. Radiation is generated by a ''bunch'' of electrons passing through a magnetic structure (called undulator or wiggler). In an FEL, this radiation is further amplified as the radiation re-interacts with the electron bunch such that the electrons start to emit coherently, thus allowing an exponential increase in overall radiation intensity. As electron kinetic energy and undulator parameters can be adapted as desired, free-electron lasers are tunable and can be built for a wider frequency range than any other type of laser, currently ranging in wavelength from microwaves, through terahertz radiation and infrared, to the visible spectrum, ultraviolet, and X-ray. The first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vienna
en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST = CEST , utc_offset_DST = +2 , blank_name = Vehicle registration , blank_info = W , blank1_name = GDP , blank1_info = € 96.5 billion (2020) , blank2_name = GDP per capita , blank2_info = € 50,400 (2020) , blank_name_sec1 = HDI (2019) , blank_info_sec1 = 0.947 · 1st of 9 , blank3_name = Seats in the Federal Council , blank3_info = , blank_name_sec2 = GeoTLD , blank_info_sec2 = .wien , website = , footnotes = , image_blank_emblem = Wien logo.svg , blank_emblem_size = Vienna ( ; german: Wien ; ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxford, England
Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2020, its population was estimated at 151,584. It is north-west of London, south-east of Birmingham and north-east of Bristol. The city is home to the University of Oxford, the oldest university in the English-speaking world; it has buildings in every style of English architecture since late Anglo-Saxon. Oxford's industries include motor manufacturing, education, publishing, information technology and science. History The history of Oxford in England dates back to its original settlement in the Saxon period. Originally of strategic significance due to its controlling location on the upper reaches of the River Thames at its junction with the River Cherwell, the town grew in national importance during the early Norman period, and in the late 12th century became home to the fledgling University of Oxford. The city was besieged during The Anarchy in 1142. The university rose to domin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lotte Motz
Lotte Motz, born Lotte Edlis (August 16, 1922 – December 24, 1997) was an Austrian-American scholar, obtaining a Ph.D. in German and philology, who published four books and many scholarly papers, primarily in the fields of Germanic mythology and folklore. Life Lotte Motz's family left Austria in 1941, following the Anschluss. She earned her B.A. from Hunter College and pursued her graduate studies at Stanford University and the University of Wisconsin, obtaining a Ph.D. in German and philology from the latter institution in 1955. She later earned a D.Phil. at the University of Oxford in Old English. Motz obtained an academic position in the German language department at Brooklyn College and also taught at Hunter College. After she retired from teaching due to illness in 1984, Motz's research interests came to focus on female figures in Germanic mythology, especially the nature and function of giantesses. According to Rudolf Simek, Motz was "never afraid to attack the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anna Motz
Anna Motz (born 1964) is a Consultant Clinical and Forensic Psychologist with extensive clinical experience with women as perpetrators of violence and with the staff teams who work with them. Formerly president of the International Association for Forensic Psychotherapy (IAFP), she is the author of ''The Psychology of Female Violence: Crimes Against the Body''.Anna Motz ''The Psychology of Female Violence: Crimes Against the Body'' (Routledge, 2001) , 2nd edition January 2008 The book deals with the causes of violence in women, what can be done to help them and their victims and explores why society denies the fact of female violence. This book explores the nature and causes of female violence from the perspectives of psychodynamic theory and forensic psychology. The book explores recent high-profile cases of female violence, including the case of Victoria Climbié, the controversy related to the diagnosis of Münchausen syndrome by proxy, Dangerous and severe personality disor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxford University
Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2020, its population was estimated at 151,584. It is north-west of London, south-east of Birmingham and north-east of Bristol. The city is home to the University of Oxford, the oldest university in the English-speaking world; it has buildings in every style of English architecture since late Anglo-Saxon. Oxford's industries include motor manufacturing, education, publishing, information technology and science. History The history of Oxford in England dates back to its original settlement in the Saxon period. Originally of strategic significance due to its controlling location on the upper reaches of the River Thames at its junction with the River Cherwell, the town grew in national importance during the early Norman period, and in the late 12th century became home to the fledgling University of Oxford. The city was besieged during The Anarchy in 1142. The university rose to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
St Catherine's Society, Oxford
St Catherine's College (colloquially called St Catz or Catz) is one of the Colleges of the University of Oxford, constituent colleges of the University of Oxford and is the newest college admitting both undergraduate and graduate students. Tracing its roots back to 1868 (although the college itself was opened in 1962), it has 528 undergraduate students, 385 graduate students and 37 visiting students as of December 2020, making it the largest college by undergraduate membership in the University of Oxford (Kellogg College, Oxford, a graduate-only college, has 1,137 students; St. Catherine's has 950). In 1974, it was also one of the first men's colleges to admit women. The college developed out of the university's Delegacy for Unattached Students, and was founded in 1962 by the historian Alan Bullock, who became the first master of the college, and later vice-chancellor of the university. The current master is Kersti Börjars, who took over the role in 2020 and is the college's fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
St Catherine's College, Oxford
St Catherine's College (colloquially called St Catz or Catz) is one of the constituent colleges of the University of Oxford and is the newest college admitting both undergraduate and graduate students. Tracing its roots back to 1868 (although the college itself was opened in 1962), it has 528 undergraduate students, 385 graduate students and 37 visiting students as of December 2020, making it the largest college by undergraduate membership in the University of Oxford ( Kellogg College, Oxford, a graduate-only college, has 1,137 students; St. Catherine's has 950). In 1974, it was also one of the first men's colleges to admit women. The college developed out of the university's Delegacy for Unattached Students, and was founded in 1962 by the historian Alan Bullock, who became the first master of the college, and later vice-chancellor of the university. The current master is Kersti Börjars, who took over the role in 2020 and is the college's first female master. History The col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rand Corporation
The RAND Corporation (from the phrase "research and development") is an American nonprofit global policy think tank created in 1948 by Douglas Aircraft Company to offer research and analysis to the United States Armed Forces. It is financed by the U.S. government and private endowment, corporations, universities and private individuals. The company assists other governments, international organizations, private companies and foundations with a host of defense and non-defense issues, including healthcare. RAND aims for interdisciplinary and quantitative problem solving by translating theoretical concepts from formal economics and the physical sciences into novel applications in other areas, using applied science and operations research. Overview RAND has approximately 1,850 employees. Its American locations include: Santa Monica, California (headquarters); Arlington, Virginia; Pittsburgh, Pennsylvania; and Boston, Massachusetts. The RAND Gulf States Policy Institute has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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