61. BBC NEWS | In Depth | Newsmakers | Paul Dirac: The Unsung Genius Friday, 5 July, 2002, 1529 GMT 1629 UK paul dirac The unsung genius, By Bob ChaundyBBC News profiles unit. Most people have never heard of paul dirac. http://news.bbc.co.uk/hi/english/in_depth/uk/2000/newsmakers/newsid_2094000/2094

CATEGORIES TV RADIO COMMUNICATE ... INDEX SEARCH You are in: In Depth: Newsmakers News Front Page World ... Programmes SERVICES Daily E-mail News Ticker Mobile/PDAs Text Only ... Help EDITIONS Change to World Friday, 5 July, 2002, 15:29 GMT 16:29 UK Paul Dirac: The unsung genius By Bob Chaundy BBC News profiles unit Most people have never heard of Paul Dirac. But, a new exhibition by Britain's Royal Society points out, it's because of him that we've got electronics. So who was he? The mathematician Mark Kac divided geniuses into two classes. Ordinary ones whose achievements others will emulate, and magicians whose inventions are so astounding that it is hard to see how any human could have imagined them. Paul Dirac was one of these magicians. When he went to Cambridge in 1923, at the age of 21, the world of physics was in turmoil. Experiments had shown that classical physicists could not explain the behaviour of atoms. The old principles of Isaac Newton didn't seem to apply to the microscopic world. The Dirac equation Dirac soon developed his own widely-acclaimed theory of quantum mechanics. His theory included wave mechanics, the version of quantum mechanics developed by Erwin Schrodinger, and matrix mechanics, the theory put forward by Werner Heisenberg.

62. Paul A. M. Dirac Collection The Family Papers include a few items dealing with paul dirac's father's family inSwitzerland, but the majority deal with his parents and their families, his http://pepper.cpb.fsu.edu/dirac/diracFA(HTML)_011.htm

The Paul A. M. Dirac Collection A Finding Aid to the Collection in the Paul A. M. Dirac Science Library at Florida State University National Science Foundation Paul A. M. Dirac Science Library Florida State University Tallahassee, Florida 32306-4140 Phone: (850) 644-5534 Fax: (850) 644-0025 Email: conaway@lis.fsu.edu URL: http://www.fsu.edu/~library/dirac/index.html Finding aid created by Charles Wm. Conaway, Billie B. Oakes, and Joseph R. McElrath, Jr. with the technical assistance of John R. Nemmers and Burton H. Altman Collection Summary Title: Paul A. M. Dirac Collection Dates: 1788-1999 Extent: 190 linear feet Repository: Paul A. M. Dirac Science Library, Florida State University Abstract The Paul A. M. Dirac Collection contains materials related principally to the periods in which Dirac was associated as student and then as professor with St. John's College of the University of Cambridge and Florida State University (1923-84). These include manuscripts of his books, articles, and lectures; manuscripts written by others; proofs for his and others' articles; notes and notebooks; sheaves of calculations; offprints of his and others' articles; incoming professional correspondence; and photographs, many of which were taken at professional conferences in the company of other prominent physicists. Included also are personal papers and family-related documents dating from the nineteenth century, as well as notebooks and various documents pertaining to his studies prior to entering the University of Cambridge . The collection also contains a small group of audio-recordings, award certificates and diplomas, realia, collection administration records, and aids to research.

63. VEDA 28.12. 100 let kvant. fyziky paul Adrien Maurice dirac Jirí Svršek paul diracje znám jako tvurce kompletní teoretické formulace kvantové mechaniky. http://pes.eunet.cz/veda/clanky/8140_24_0_0.html

NEVIDITELNÝ PES EUROPE'S ZVÍØETNÍK BYDLENÍ ... BAZAR Ètvrtek 28.12.2000 Svátek má Bohumila Vše rozbalit Celé sbalit Archiv vydání Nadpis Autor Text èlánku Pro zájemce uvádím program 43. semináøe Spoleènosti pro talent a nadání - ECHA: Kam smìøuje vzdìlávání nadaných dìtí v Evropì? Poradenská a výzkumná centra pro nadané Koná se v pátek, 27.10.2000 ve 14 hodin, v Aule Pedagogické fakulty UK v Praze 1, M.D.Rettigové 4. Promluví: PhDr Jolana Laznibatová z VÚDPaP v Bratislavì, øeditelka Školy pro mimoøádnì nadané dìti a PhDr Eva Vondráková, pøedsedkynì STaN-ECHA, Obì jsou psycholožky a zúèastnily se 7.ECHA konference v Maïarsku a mezinárodního workshopu o centrech a síti péèe o nadané, který se konal zaèátkem øíjna 2000 v Chorvatsku. Další informace najdete na adrese: http://db.zpc.cz ECHA sdružuje psychology, pedagogy a rodièe nadaných dìtí. Od kvìtna 1995 je Poradcem Rady Evropy ve vzdìlávání nadaných. STaN-ECHA organizuje od r.1989 odborné semináøe. Už sedmý rok existuje Klub rodièù STaN-ECHA, který se koná 1x mìsíènì. Kontaktní adresa: PhDr Eva Vondráková, Klub rodièù

64. Physics4u-Paul Dirac, 100 ÷ñüíéá áðü ôçí ãÝííçóÞ ôçò áã� The summary for this Greek page contains characters that cannot be correctly displayed in this language/character set. http://www.physics4u.gr/articles/2002/dirac.html

Paul Dirac (1902-1984) Ï öõóéêüò Paul Dirac Þôáí áðü ôïõò öõóéêïýò ðïõ äéáìüñöùóáí êáé óõíÝâáëëáí óôçí ðñüïäï ôçò åðéóôÞìçò ôïõ åéêïóôïý áéþíá. Ï Niels Bohr Ýëåãå ãé' áõôüí üôé "áðü üëïõò ôïõ öõóéêïýò, ï Dirac Ý÷åé ôçí áãíüôåñç øõ÷Þ". Åß÷å ðïëëÝò êñßóéìåò óõíåéóöïñÝò óôçí êâáíôéêÞ Ìç÷áíéêÞ, ôç èåùñßá ðïõ ðåñéãñÜöåé ôïí ìéêñüêïóìï, êáé ìïéñÜóôçêå ôï âñáâåßï Íüìðåë ôïõ 1933 ãéá ôç öõóéêÞ "ãéá ôçí áíáêÜëõøç ôùí íÝùí êáé ðáñáãùãéêþí ìïñöþí ôçò áôïìéêÞò èåùñßáò". Åßíáé ðåñßåñãï, ðùò ðáñáìÝíåé ó÷åôéêÜ Ýíáò Üãíùóôïò óôï åõñý êïéíü, åíþ ôá åðéôåýãìáôÜ ôïõ åßíáé éóüôéìá ìå áõôÜ ôïõ Íåýôùíá, Maxwell êáé ôïõ ÁúíóôÜéí. ¼ðùò ëÝåé ï Feynmann "ï Dirac ðÞñå ôéò áðáíôÞóåéò ôïõ... ìáíôåýïíôáò ìéá åîßóùóç". Ôçí åîßóùóç ðïõ öáíôÜæåé áðëÞ áëëÜ Ýêñõâå ðïëëÝò áðáíôÞóåéò. Ï ÁéíóôÜéí ôïí åêôéìïýóå ãéáôß ðáñïõóßáóå ôçí ðéü ôÝëåéá ìïñöÞ ôçò ÊâáíôéêÞò Ìç÷áíéêÞò, åíþ ï Pauli Ýëåãå ãé' áõôüí "Äåí õðÜñ÷åé Èåüò, êáé ðñïöÞôçò ôïõ ï Dirac". Ï Dirac, Paul Adrien Maurice, Þôáí Ýíáò Âñåôáíüò,ðïõ ãåííÞèçêå óôï Ìðñßóôïë ôçò Áããëßáò ðñéí áðü 100 ÷ñüíéá, ôï 1902 . Ï ðáôÝñáò ôïõ, Ýíáò óõíôçñçôéêüò êáèçãçôÞò áëëéêþí, Þôáí ðïëý áõóôçñüò êáé Ýâáæå ôá ðáéäéÜ ôïõ íá ìéëÜíå ìüíï áëëéêÜ ãéá íá ôá ìÜèïõí êáëÜ. ÅðåéäÞ üìùò ï Paul äåí ìðïñïýóå íá ôá ìéëÞóåé Ýìáèå íá åßíáé óéùðçëüò óå üëç ôïõ ôç æùÞ åíþ Üíïéãå êïõâÝíôá ìüíï üôáí ôïõ ìéëïýóáí ïé Üëëïé.

65. Featured Physicists - Paul Dirac 1902-1984 Featured Physicists paul Adrien Maurice dirac (19021984). Back to the featuredphysicists page. Figure 1.31 paul dirac Click here for larger image (13.62kb). http://physicalworld.org/restless_universe/html/ru_dira.html

The Restless universe Introduction to The restless Universe 1 The lawful Universe 2 The clockwork Universe 3 The irreversible Universe ... 6 Closing items Other titles in the Physical World series Describing motion Predicting motion Classical physics of matter Static fields and potentials ... Quantum physics of matter Featured Physicists Paul Adrien Maurice Dirac (1902-1984) Back to the featured physicists page Click here to visit the main section concerning Dirac in 5 the uncertain Universe Paul Adrien Maurice Dirac was born in Bristol, England, in 1902. His father was a Swiss-born teacher of French, his mother a librarian. Dirac's first degree, obtained at the Merchant Venturer's Technical College, was in electrical engineering, but he had no real interest in the subject and after graduating spent two years studying mathematics at the University of Bristol. In 1923 he left Bristol for Cambridge where he remained for most of his working life. Figure 1.31 Paul Dirac Click here for larger image Dirac's achievements in Cambridge were prodigious. In 1925, while working for his doctorate, he became one of the founders of quantum mechanics when he produced an elegant extension of Heisenberg's work. A little over a year later he presented a very general formulation of quantum mechanics that has remained the basis of the subject ever since. During the next year he essentially founded quantum electrodynamics. In 1928 Dirac took an important step towards bringing quantum physics into conformity with Einstein's

66. Paul A. M. Dirac, Genius paul Adrian Maurice dirac, genius. I hardly met dirac; he was givinga talk at the Institute for Advanced Study at Princeton, in http://www.mth.kcl.ac.uk/~streater/dirac.html

Paul Adrian Maurice Dirac, genius I hardly met Dirac; he was giving a talk at the Institute for Advanced Study at Princeton, in maybe 1962, on the rather unpromising subject of a classical cloud-model of the electron. The crowd of listeners being very large, and the day a sunny, if windy one, we all moved out onto the lawn at the Institute, and a blackboard was placed on an easel for his use. Dirac started by saying that the infinities of quantum electrodynamics were due to quantising the point electron, which had singularities even in classical electrodymanics; he therefore had been studying the classical dynamics of an oval shaped cloud of charge, using the Maxwell Lorentz theory. He had not got very far when a breeze caught the blackboard and blew it onto Dirac's back (he was facing the audience). To our shock, the weight of the board flattened Dirac onto the grass, and it seemed to me to be ages before another physicist, maybe Oppenheimer, ran to rescue him. Soon after this, Dirac produced his paper, "quantum electrodynamics without dead wood", whose title might have been inspired by Dirac's hobby during his stay at the Institute, which was taking an axe to the untidy trees in the woods around about. There are many links to Dirac; see for example, his Nobel prize.

67. Read This: Paul Dirac: The Man And His Work paul dirac the man and his work edited by Peter Goddard. Reviewed by Fernando Q.Gouvêa. Publication Data paul dirac the man and his work, by Peter Goddard. http://www.maa.org/reviews/dirac.html

Read This! The MAA Online book review column Paul Dirac: the man and his work edited by Peter Goddard Reviewed by Fernando Q. Gouvêa Mathematics and Physics have always had a close relationship, though the level of friendliness between the two disciplines has, of course, varied from time to time. This little book focuses on a physicist who was trained as a mathematician and who brought a very mathematical turn of mind to bear on physical problems in a very fruitful way. As Peter Goddard says in his introduction, "Dirac cited mathematical beauty as the ultimate criterion for selecting the way forward in theoretical physics." This method was sometimes enormously successful, as when Dirac predicted the existence of the positron simply because his mathematics required such particles to exist. This is a feat on the order of the prediction of the existence of Uranus and Neptune on the basis of the gravitational anomalies in the solar system. In both cases, a mathematical theory led physicists to postulate, and then verify, the existence of some objective entity; they both demonstrate the real power of mathematics as a tool to understand the universe. The story isn't all positive, though, as Abraham Pais makes clear in his survey of Dirac's life and work. After his initial successes in the 1930s, Dirac seems to have been far less fortunate in his research. Though he remained an interesting and powerful voice, he seemed seriously distressed by the mathematical difficulties in quantum theory, most particularly in quantum electrodynamics, of which he said "the resulting theory is an ugly and incomplete one." The "renormalization" procedure which is used to deal with the divergent expansions in the theory did not satisfy him at all, and he spent great energy in trying to find the "right" theory. Pais quotes a letter that expresses his final attitude on this subject:

68. Paul Adrien Maurice Dirac Translate this page paul Adrien Maurice dirac. dirac wurde am 8.August 1902 in Bristol, Gloucestershire,England geboren und starb am 20.Oktober 1984 in Tallahassee, Florida, USA. http://www.chemie.uni-bremen.de/stohrer/biograph/dirac.htm

Paul Adrien Maurice Dirac Dirac wurde am 8.August 1902 in Bristol, Gloucestershire, England geboren und starb am 20.Oktober 1984 in Tallahassee, Florida, USA. Er gilt mit Werner Heisenberg Niels Bohr und Max Born 'Principles of Quantum Mechanics'

69. Science Jokes:Paul Dirac Index Comments and Contributions Index Jokes with Famous Scientists.paul dirac. The beauty of a mathematical theory; Tell people http://www.xs4all.nl/~jcdverha/scijokes/Dirac.html

Index Comments and Contributions Index Jokes with Famous Scientists Paul Dirac The beauty of a mathematical theory Tell people in science or poetry (quotation) variation on knitting (anecdote) Question or statement (anecdote) ... Comments and Contributions

70. Paul Dirac - Cambridge University Press Home Catalogue paul dirac. Related Areas Physics. paul dirac. The Man and hisWork. Abraham Pais, Maurice Jacob, David I. Olive, Michael F. Atiyah. £15.95. http://books.cambridge.org/0521583829.htm

Home Catalogue Related Areas: Physics New titles Email For updates on new titles in: Physics Paul Dirac The Man and his Work Abraham Pais, Maurice Jacob, David I. Olive, Michael F. Atiyah In stock Paul Adrien Maurice Dirac was one of the founders of quantum theory. He is numbered alongside Newton, Maxwell and Einstein as one of the greatest physicists of all time. Together the lectures in this volume, originally presented on the occasion of the dedication ceremony for a plaque commemorating Dirac in Westminster Abbey, give a unique insight into the relationship between Dirac’s character and his scientific achievements. The text begins with the dedication address given by Stephen Hawking at the ceremony. Then Abraham Pais describes Dirac as a person and his approach to his work. Maurice Jacob explains how Dirac was led to introduce the concept of antimatter, and its central role in modern particle physics and cosmology, followed by an account by David Olive of the origin and enduring influence of Dirac’s work on magnetic monopoles. Finally, Sir Michael Atiyah explains the deep and widespread significance of the Dirac equation in mathematics. Reviews ‘Paul Dirac is an enigma. Unquestionably the greatest British theoretical physicist of this century This is a beautiful little book, a pleasure to read an an excellent memorial to a truly extraordinary physicist.’European Journal of Physics

71. Paul Dirac And Wolfgang Pauli A simple explanation accompanies them. There is also an archive!7 August 2002. paul dirac centenary of a great physicist. paul http://hepweb.rl.ac.uk/ppukpics/POW/pr_020807.html

Picture Database Classic images from the world of particle physics featuring discoveries, people, experiments, or images that are simply good to look at. A simple explanation accompanies them. There is also an archive 7 August 2002 Paul Dirac - centenary of a great physicist Paul Adrien Maurice Dirac , one the greatest physicists of the 20th century was born 100 years ago in Bristol on 8 August 1902. His greatest contribution to physics came during the winter of 1927-8 when he combined relativity with quantum mechanics, and produced what is known as "the Dirac equation ". This gave the correct relativistic description of the electron, and showed that it has spin (of half a unit). It also predicted the existence of antimatter , particularly in the form of "antielectrons" ( positrons ), which are like electrons but with opposite electric charge. In 1933 Dirac and Werner Schroedinger shared the Nobel prize for physics. In this image , from the Pauli Archive at CERN , Dirac (right) is pictured in Oxford in 1938 together with fellow theorist Wolfgang Pauli Credit: CERN Please contact person or institution named for information about permission for public or commercial use.

72. Dirac Centennial Celebration Monica dirac, paul dirac's daughter, will also talk about her father. paul diracwas born in Bristol on 8 August 1902, of a Swiss father and British mother. http://hepweb.rl.ac.uk/ppUK/PressReleases/pr_dirac.html

Dirac Centennial Celebration 12 July 2002 INVITATION TO JOURNALISTS Cambridge University is celebrating the centenary of one of the 20th century's greatest physicists - Paul Dirac - with a symposium on 20 July which features several of today's most influential physicists and mathematicians, namely Edward Witten, Sir Michael Atiyah, Stephen Hawking and Peter Goddard. Monica Dirac, Paul Dirac's daughter, will also talk about her father. Paul Dirac was born in Bristol on 8 August 1902, of a Swiss father and British mother. He studied electrical engineering and then mathematics at Bristol University before starting research in theoretical physics at Cambridge. By 1928, when he was still only 26 years old, he had completed the work for which he became best known, bringing together special relativity and quantum mechanics, which resulted in the famous "Dirac equation". His work not only showed that electrons must possess "spin" - a fixed amount of "internal" angular momentum - but also that there must exist "anti-electrons", with opposite properties to electrons. The symposium will be held on 20 July 2002, 2.30-5.30 pm, at the Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

73. CONFMENU-G paul AM dirac. YS Kim Department of Physics, University of Maryland, College Park,Maryland 20742, USA (30 October 2002). I met paul AM dirac in 1962 and 1978. http://www.physics.umd.edu/robot/wigner/dirac.html

Courtesy of AIP Niels Bohr Library Paul A. M. Dirac Y. S. Kim Department of Physics, University of Maryland, College Park, Maryland 20742, U.S.A. (30 October 2002) I met Paul A. M. Dirac in 1962 and 1978. In November of 1984, shortly after his death, I attended the memorial service held at Florida State University in Tallahassee, Florida. Eugene Wigner was his brother-in-law, and he told me many interesting stories about Dirac, especially about Mrs. Margit Dirac who was Wigner's younger sister. Based on these contacts, I can write a story about Paul A. M. Dirac. Dirac is an important person to every physicist, perhaps in his/her own way. I would like to use this webpage to explain how my research life was affected by him. What is then so special about me? First of all, I maintain this webpage. Many people say that I do this webpage because I cannot do physics. Let us see. In 1962, I was a first-year assistant professor at the University of Maryland, and John S. Toll was the chairman of the physics department. Toll invited Dirac to Maryland for three days, and I had to provide services to him. With him, I had one full hour to ask questions about physics. At that time, the only physics I knew, besides the basic knowledge to pass the PhD qualifying exam, was S-matrix theory or dispersion relations. In 1962, every particle theorist was doing the N/D (N over D) method (if you know this word, you are an old person these days). However, I was quite skeptical about the future of this program because it did not address fundamental issues.

74. Re: Question About Paul Dirac Re Question about paul dirac. Follow 27 In Reply to Question aboutpaul dirac posted by sol on December 05, 2002 at 220016 Sol,. http://superstringtheory.com/forum/stringboard/messages22/34.html

String Theory Discussion Forum String Theory Home Forum Index Re: Question about Paul Dirac Follow Ups Post Followup String Physics XXII FAQ Posted by DickT on December 06, 2002 at 08:27:27: In Reply to: Question about Paul Dirac posted by sol on December 05, 2002 at 22:00:16: Sol, To get it out of the way, the i in the third matrix is the square root of -1. All of these matrices are complex, although the other three use only the real unit, 1 = 1 + 0i. The matrices act on complex vectors in four dimensional complex space. these vectors are actually Dirac spinors. Now, the prehistory of strings. The very first string theory was Heisenberg's one dimensional quantum field theory back in the thirties. I believe I have heard that some work of Dirac's is a precursor to strings, but I don't know what it is. String theory really began when Veneziano discovered the "dual channel model". Imagine you have a reaction that looks like a blob or cloud representing "we don't know", and two particles enter the cloud and two come out. Now if we imagine the two incomers exchanged a boson and produced the two outgoers, that could happen in two ways. Veneziano wanted an amplitude formula that would cover both cases, which are equally likely. He found it in Euler's Beta Function. Nambu then pointed out that Veneziano's math could be interpreted as describing strings in 26 dimensional space, with the particles in the diagram coming out as vibrations of the string.

75. Question About Paul Dirac Question about paul dirac. Follow moderator). Follow Ups (Reload page tosee most recent) Re Question about paul dirac DickT 12/06/02 (15) http://superstringtheory.com/forum/stringboard/messages22/33.html

String Theory Discussion Forum String Theory Home Forum Index Question about Paul Dirac Follow Ups Post Followup String Physics XXII FAQ Posted by sol on December 05, 2002 at 22:00:16: In Reply to: Re: Some Research posted by DickT on December 05, 2002 at 08:17:22: Dickt, Is it true that string theory was first suggested by Dirac? Could you explain the i in third matrice? Sol (Report this post to the moderator) Follow Ups: (Reload page to see most recent) Re: Question about Paul Dirac DickT Re: Question about Paul Dirac(The existance of the Positron) sol ... sol Post a Followup Name : Save your login cookie Password : Delete your login cookie Subject : Comments: (The following are optional.) Link URL : Link Title : Image URL : Follow Ups Post Followup String Physics XXII FAQ

76. CERN Courier - Paul Dirac: A Genius In The - IOP Publishing dirac Centenary paul dirac a genius in the history of physics The year 2002 is thecentennial year for paul dirac, who was born in Bristol on 8 August 1902. http://www.cerncourier.com/main/article/42/7/15

Author: Richard Dalitz This Issue Back Issues Editorial Staff Dirac Centenary Paul Dirac: a genius in the history of physics This year is the 100th anniversary of Paul Adrien Maurice Dirac who was born in Bristol, England, on 8 August 1902 and died on 20 October 1984 in Tallahassee, Florida, US. Richard Dalitz looks back over a remarkable career in physics. Dirac circa 1925 The year 2002 is the centennial year for Paul Dirac, who was born in Bristol on 8 August 1902. His Swiss father, Charles, was born in Monthey near Geneva in 1866 and migrated to Bristol, England, to become the French teacher at the Merchant Venturers Technical College. His mother was Florence Holten, a Cornish woman who was born in Liskeard in 1878 and became a librarian in Bristol. They married in Bristol in 1899 and had three children: two sons (of which Paul was the younger) and then a daughter. After his primary and secondary education at the technical college, Paul Dirac joined the electrical engineering department of Bristol University in 1918 to train as an electrical engineer. This choice was due to prompting from his father who was concerned about his son's job prospects. Dirac in later life Paul Dirac died, aged 82, on 20 October 1984 as a Nobel Prize winner (1933) and a member of the British Order of Merit (1973). He was the outstanding theoretical physicist in Britain in the 20th century. In 1995 there was a great celebration of Dirac and his work in London. A plaque was placed in Westminster Abbey as a memorial to him and his achievements, joining similar plaques to Newton, Maxwell, Thomson, Green and other outstanding theoretical physicists. It included Dirac's equation in a compact relativistic form (as Dirac's full equation would not have fitted on the plaque). This was not a form that Dirac would ever have used, although later students of Dirac often used it. As part of the celebration, addresses were given on four topics related to Dirac's work (see P Goddard 1998 in Further reading).

77. Dirac, Paul Adrien Maurice (1902-1984) -- From Eric Weisstein's World Of Scienti paul The personal papers of paul dirac. paul AM dirac. A panel of distinguishedscience historians and archivists gathered science historians http://astsun.astro.virginia.edu/~eww6n/bios/Dirac.html

Branch of Science Physicists Nationality English ... Physics Prize Dirac, Paul Adrien Maurice (1902-1984) English physicist whose calculations predicted that particles should exist with negative energies. This led him to suggest that the electron had an " antiparticle " This antielectron was discovered subsequently by Carl Anderson in 1932, and came to be called the positron Dirac also developed a tensor version of the known as the Dirac equation which is relativistically correct. For his work on antiparticles and wave mechanics, he received the Nobel Prize in physics in 1933. Anderson (Carl) Feynman Schwinger Tomonaga Additional biographies: MacTutor (St. Andrews) Bonn References Dirac, P. A. M. General Theory of Relativity. Princeton, NJ: Princeton University Press, 1996. Dirac, P. A. M. History of Twentieth Century Physics. Dirac, P. A. M. Quantum Mechanics, 4th ed. London: Oxford University Press, 1958. Kragh, H. Dirac: A Scientific Biography. Cambridge, England: Cambridge University Press, 1990. Kragh, H. "Dirac."

78. Dirac Translate this page dirac, paul Adrien Maurice (1902-1984), físico teórico británico, premiado conel Nobel, y célebre por su predicción de la existencia del positrón, o http://www.geocities.com/fisicaquimica99/dirac.htm

Dirac, Paul Adrien Maurice (1902-1984), físico teórico británico, premiado con el Nobel, y célebre por su predicción de la existencia del positrón, o electrón positivo, y por sus investigaciones en teoría cuántica. Dirac nació en Bristol y estudió en las universidades de Bristol y Cambridge. Su teoría cuántica del movimiento del electrón le llevó en 1928 a formular la existencia de una partícula idéntica al electrón en todos los aspectos excepto en la carga: el electrón con una carga negativa y esta hipotética partícula con una carga positiva. La teoría de Dirac se confirmó en 1932, cuando el físico estadounidense Carl Anderson descubrió el positrón. En 1933 Dirac compartió el Premio Nobel de Física con el austriaco Erwin Schrödinger, y en 1939 fue nombrado miembro de la Sociedad Real. Fue profesor de matemáticas en Cambridge desde 1932 a 1968, profesor de física en la Universidad del estado de Florida desde 1971 hasta su muerte, y miembro del Instituto de Estudios Avanzados, entre 1934 y 1959. Entre las obras de Dirac se encuentra Principios de mecánica cuántica (

79. Paul Dirac - Matemática.com.prazer Translate this page paul dirac. O físico que era mágico. paul dirac Quem é que, quando criança,não se encantou ao ver um mágico tirando coelhos de uma cartola? http://www.geocities.com/matematicacomprazer/dirac.html

Paul Dirac O físico que era mágico Paul Dirac Quem é que, quando criança, não se encantou ao ver um mágico tirando coelhos de uma cartola? Cartas das mangas? Moedas de detrás da orelha? Desde os tempos imemoriais o homem surpreende ao criar coisas interessantes, que satisfazem ao bem estar, inundando-nos de alegria e emoção. Os mágicos são assim. Na Arábia, lá pelo ano 1000 um matemático poderia ser chamado de mágico, muito provavelmente porque da mesma forma que um tirava coelhos da cartola, o outro fazia surgir números e figuras quase do nada e resolvia problemas, ou os criava e desafiava, valendo-se de suas aptidões, até para conseguir riquezas. Não é a toa que matemático, em árabe antigo, seja semelhante a "enganador", "cheio de truques". É mister indicar aqui a leitura do maravilhoso livro O HOMEM QUE CALCULAVA , de Malba Tahan (que apesar do nome - fictício - era genuinamente brasileiro). Mas hoje iremos falar não de um matemático, mas de um físico, um dos maiores do mundo, sem dúvida alguma. Seu nome era Paul Adrien Maurice Dirac e foi o primero a afirmar categoricamente que haviam o que se chamam de ANTIPARTÍCULAS Hoje em dia fala-se bastante em antipartículas, como o

80. - Great Books - paul dirac (19021984), dirac is famous as the creator of a completetheoretical formulation of quantum mechanics. He studied electrical http://www.malaspina.com/site/person_415.asp

Paul Dirac Dirac is famous as the creator of a complete theoretical formulation of quantum mechanics. He studied electrical engineering at the University of Bristol before doing research in mathematics at St John's College Cambridge. His first major contribution to quantum theory was a paper written in 1925. He published The Principles of Quantum Mechanics in 1930 and for this work he was awarded the Nobel Prize for Physics in 1933. Dirac was appointed Lucasian professor of mathematics at the University of Cambridge in 1932, a post he held for 37 years. He was made a fellow of the Royal Society in 1930, was awarded the Royal Society's Royal Medal in 1939 and the Society awarded him the Copley Medal in 1952. In 1971 Dirac was appointed professor of physics at Florida State University and was appointed to the Order of Merit in 1973. [Adapted from Hallym University Physics Dept. Browse Research Links Related Science Links Modern Science

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Page 4     61-80 of 91    Back | 1  | 2  | 3  | 4  | 5  | Next 20