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Topic: Paul A.M. Dirac

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Paul Dirac - Wikipedia, the free encyclopedia Paul Dirac shared the Nobel Prize for physics in 1933 with Erwin Schrödinger "for the discovery of new productive forms of atomic theory." He married Eugene Wigner's sister, Margit, in 1937. Dirac noticed an analogy between the old Poisson brackets of classical mechanics and the recently-proposed quantization rules in Werner Heisenberg's matrix formulation of quantum mechanics. Dirac's Principles of Quantum Mechanics, published in 1930, is a landmark in the history of science. en.wikipedia.org /wiki/Paul_Dirac   (1448 words)

Paul Dirac - Wikipedia Paul Dirac deelde een Nobelprijs natuurkunde in 1933 met Erwin Schrödinger "voor de ontdekking van een nieuwe productieve vorm van atoomtheorie". Dirac was een Lucasiaans Professor in wiskunde van Cambridge van 1932 tot 1969. Paul Dirac is geboren in de Engelse stad Bristol. nl.wikipedia.org /wiki/Paul_Dirac   (877 words)

dirac.html Paul Dirac (1902-1984) was awarded the 1933 Nobel Prize for physics for his modification of Schrodinger's wave equation, the mathematical theory describing the motion of atomic particles. Dirac, who shared the award with Schrodinger, applied relativity theory to quantum mechanics in predicting the existence of positrons and electron spin. www.phy.hr /~dpaar/fizicari/dirac.html   (49 words)

Paul Dirac - MSN Encarta Paul Adrien Maurice Dirac was born in Bristol, England, and educated at the universities of Bristol and Cambridge. Paul Dirac (1902-84), British theoretical physicist and Nobel laureate, renowned for his prediction of the existence of the positron, or antielectron, and for his research in quantum theory. In 1933 Dirac shared the Nobel Prize in physics with the Austrian physicist Erwin Schrödinger, and in 1939 he was made a fellow of the Royal Society. encarta.msn.com /encyclopedia_761579313/Paul_Dirac.html   (199 words)

xdirac.html Dirac's fame stems from his formulation in 1928 of a mathematical description of elementary particles that accords with both quantum mechanics and the theory of relativity. Dirac was Lucasian Professor of Mathematics at Cambridge from 1932 to 1969 and professor of physics at Florida State University, from 1971 until his death. In his first publication, in November 1925, Dirac elaborated a method for deriving the equation of motion from quantum mechanics, and a few months later he clearly defined a number of concepts that were to play a major role in the field. www.phy.hr /~dpaar/fizicari/xdirac.html   (269 words)

Paul Dirac In 1937 Dirac married Margit Balasz (née Wigner), the sister of the famous Hungarian physicist Eugene Wigner. Dirac continued to publish important papers on the quantum theory of fields and gravity throughout his career, and was elected an Honorary Fellow of the Institute of Physics in 1971. Dirac made many crucial contributions to quantum mechanics, the theory which describes the world on very small scales, and shared the 1933 Nobel Prize for Physics "for the discovery of new and productive forms of atomic theory". www.iop.org /diracbio.html   (652 words)

Guardian Unlimited Books By genre Physics + Dirac = poetry Dirac commended this aesthetic approach to theoretical physics in a lecture he gave in 1974, advising a group of Har vard graduate students to be concerned only with the beauty of their equations, not with what the equations mean. Dirac's most famous poem enabled him successfully to predict the existence of antimatter, a triumph that his colleague, the quantum pioneer Werner Heisenberg, judged to be the supreme achievement of 20th-century physics. Dirac and Anderson initially knew nothing of each other's work, but when the results were published it was clear that Anderson had unwittingly detected the first example of what became known as "antimatter". books.guardian.co.uk /departments/scienceandnature/story/0,6000,653837,00.html   (958 words)

Paul Dirac - Wikipedia, la enciclopedia libre Paul Dirac compartió en 1933 el Premio Nobel de física con Erwin Schrödinger "por el descubrimiento de nuevas teorías atómicas productivas." Dirac obtuvo la cátedra Lucasiana de matemáticas de la Universidad de Cambridge donde ejerció como profesor de 1932 a 1969. Paul Adrien Maurice Dirac (8 de agosto de 1902- 20 de octubre de 1984) fue un físico inglés pionero en la física cuántica. Tras hablar con Dirac, Pauli dijo en sus crónicas: "Si entiendo correctamente a Dirac, él dice: no hay Dios, y Dirac es su profeta". es.wikipedia.org /wiki/Paul_Dirac   (690 words)

Dirac, Paul Adrien Maurice. The Columbia Encyclopedia, Sixth Edition. 2001-05 Dirac’s equation for the motion of a particle is a relativistic modification of the Schrödinger wave equation, the basic equation of quantum mechanics. Dirac also received the Copley Medal of the Royal Society in 1952 for this and other contributions to the quantum theory, including his formulation (with Enrico Fermi) of the Fermi-Dirac statistics and his work on the quantum theory of electromagnetic radiation. In 1928, Dirac published a version of quantum mechanics that took into account the theory of relativity (see quantum theory). www.bartleby.com /65/di/Dirac-Pa.html   (219 words)

Dirac - Wikipedia, the free encyclopedia The codec is named in honour of the British scientist Paul Dirac. The experimental and unfinished Dirac codec, written in C++, was released under an Open Source license at SourceForge on 11 March 2004. Dirac's implementors make the preliminary claim of "a two-fold reduction in bit rate over MPEG-2 for high definition video"[1], an estimate which would put the design in about the same class of compression capability as the latest standardization efforts of H.264/AVC and VC-1. en.wikipedia.org /wiki/Dirac   (540 words)

Dirac, Paul Adrien Maurice - Hutchinson encyclopedia article about Dirac, Paul Adrien Maurice Dirac was born and educated in Bristol and from 1923 at Cambridge, where he was professor of mathematics 1932–69. Dirac noticed that those particles with half-integral spins obeyed statistical rules different from the other particles. For these particles, Dirac worked out the statistics, now called Fermi–Dirac statistics because Italian physicist Enrico Fermi had done very similar work. encyclopedia.farlex.com /Dirac,+Paul+Adrien+Maurice   (228 words)

dirac.html Dirac taught at Cambridge after receiving his doctorate there, and in 1932 he was appointed Lucasian Professor of Mathematics, the chair once held by Isaac Newton. Dirac's version of quantum mechanics was distinguished, however, by its generality and logical simplicity. With the object of formulating atomic laws in the most elegant mathematical language, Dirac applied to quantum mechanics the ideas of Einstein's special theory of relativity. www.phy.bg.ac.yu /web_projects/giants/dirac.html   (741 words)

CERN Courier - Paul Dirac: a genius in the - IOP Publishing - article 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). In 1927 Dirac sought to develop a theory of the electron that satisfied this requirement and he published his relativistically invariant equation for the electron early in 1928 (see P Dirac 1928 in Further reading). With it, he was able to develop his transformation theory, which showed explicitly (see P Dirac 1927 in Further reading) how it was possible to relate a range of different formulations of quantum mechanics, all of them equivalent in their physical consequences, such as Schrödinger's wave equation and Heisenberg's matrix mechanics. www.cerncourier.com /main/article/42/7/15   (1851 words)

Paul Dirac: the purest soul in physics (February 1998) - Physics World - PhysicsWeb Paul Dirac was born at 15 Monk Road in Bishopston, Bristol, on 8 August 1902, and educated at the nearby Bishop Road Primary School. In Dirac's equation, spin did not have to be imported: it emerged - along with the magnetism of the electron - as an inevitable property of an electron that was both a quantum particle and a relativistic one. Dirac also showed how quantum waves for many electrons had to be constructed, incorporating the philosophically intriguing fact that any two of these particles are absolutely identical and so cannot be distinguished in any way. www.physicsweb.org /article/world/11/2/9/1   (3112 words)

Featured Physicists - Paul Dirac 1902-1984 Paul Adrien Maurice Dirac was born in Bristol, England, in 1902. 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. During this period Dirac worked on a variety of topics including magnetic monopoles (hypothetical magnetic charges) and the speculation that the fundamental constants of physics might be gradually changing in a co-ordinated way. physicalworld.org /restless_universe/html/ru_dira.html   (554 words)

Science Show - 7/12/2002: Portrait of a Physicist Paul Dirac: I realised that there would be these other particles and I felt that they should have the same mass as the electron, but I wasn't sufficiently bold to put that into print. When he retired from Cambridge in 1969 Paul Dirac and his wife moved to Tallahassee in Florida where he continued to work as Emeritus Professor at Florida State University, and there he was very popular, admired by both students and staff. This extract of Paul Dirac is taken from a BBC interview broadcast in 1979. www.abc.net.au /rn/science/ss/stories/s740776.htm   (3649 words)

Dirac Video Codec Dirac is named after the British physicist (of Swiss extraction) Paul Dirac, who was one of the great figures in modern physics. Dirac is relatively modular (which is one reason why it's a conventional hybrid codec rather than, say, 3D wavelets) so removing or adding tools should be possible until it goes Beta and the bitstream and decoder functionality are fixed. Dirac supports more or less any block sizes for motion compensation and this again helps in scaling the algorithms as larger blocks can be used for higher resolution pictures and smaller ones for low resolution pictures. dirac.sourceforge.net /faq.html   (1360 words)

Paul Adrien Maurice Dirac - Cambridge University Press Paul Dirac, who died in 1984, was without question one of the greatest physicists of the twentieth century. Paul Dirac and Werner Heisenberg- a partnership in science L. Brown and H. Rechenberg; 13. Dirac at the University of Miami H. Stanford; 9. www.cambridge.org /catalogue/print.asp?isbn=0521340136&print=y   (390 words)

Paul Dirac - Wikipédia Paul Adrien Maurice Dirac est un physicien et mathématicien britannique né le 8 août 1902à Bristol (Gloucestershire, Angleterre) et décédé le 20 octobre 1984à Tallahassee, en Floride. Dirac fut « Professeur Lucasien » à l'université de Cambridge de 1932à 1969, et professeur de premier cycle à l'université de Bristol. Cela permet à Dirac de prédire l'existence d'une particule appelée positron, l'antiparticule de l'électron. fr.wikipedia.org /wiki/Paul_Dirac   (457 words)

Interview with Paul Adrian Maurice Dirac - F. David Peat Dirac is concerned with the occurrence of large numerical constants in physical theories. Like Newton before him Dirac has made contributions that are respected by his colleagues not only for their depth of insight and clarity but for the power and economy with which mathematics is brought to bear upon the problems of nature. Dirac was able to show that the two theories were equivalent, and in the process provided quantum theory with a sound mathematical footing. www.fdavidpeat.com /interviews/dirac.htm   (2796 words)

Paul Dirac - Wikiquote Paul Adrien Maurice Dirac (August 8, 1902- October 20, 1984) British theoretical physicist and a founder of the field of quantum physics. If I understand Dirac correctly, his meaning is this: there is no God, and Dirac is his Prophet. Or alternatively, when Oppenheimer was working at Göttingen, Dirac supposedly came to him one day and said: "Oppenheimer, they tell me you are writing poetry. en.wikiquote.org /wiki/Paul_Dirac   (497 words)

BBC NEWS In Depth Newsmakers Paul Dirac: The unsung genius For his achievement, Paul Dirac was awarded the Nobel Prize for Physics in 1933 at the age of 31. Charles Dirac was famously strict and would only allow his son to speak in perfect French at the dining table. The resulting Dirac equation, still widely used today, was able to explain the mysterious magnetic and "spin" properties of the electron. news.bbc.co.uk /2/hi/in_depth/uk/2000/newsmakers/2094374.stm   (747 words)

The Paul A. M. Dirac Collection The materials in the Paul A. Dirac Collection were donated by Professor Paul A. Dirac and his wife to Florida State University over a period of years from 1984 to 1997. The Paul A. Dirac Collection consists of the personal and family papers, photographs, manuscripts, galley proofs, and published papers, scientific calculations, lecture notes, and office files of Dr. Paul A. Dirac, winner of the Nobel Prize (Physics, 1933). The Family Papers include a few items dealing with Paul Dirac's father's family in Switzerland, but the majority deal with his parents and their families, his brother and sister, his wife and their children, and his in-laws (including his brother-in-law, Eugene P. Wigner, who also won the Nobel Prize in Physics). diglib.lib.fsu.edu /findaids/dirachtml.html   (2408 words)

HISTORY OF PHYSICS: ON PAUL DIRAC (1902-1984) 1) Of the few authentic visionaries modern science has known, Paul Dirac was the most inscrutable. Dirac's genius was quickly recognized -- he was the youngest participant in the elite Solvay Congress of 1927, at which Niels Bohr and Albert Einstein began their long debate about the foundations of quantum mechanics. Dirac declared to Kuhn that his approach was fundamentally geometrical and that he was "just no good" at doing "masses of algebraic calculations without picturing what the equation means". scienceweek.com /2005/sw051118-6.htm   (1371 words)

Paul A.M. Dirac - Biography Paul Adrien Maurice Dirac was born on 8th August, 1902, at Bristol, England, his father being Swiss and his mother English. Dirac's work has been concerned with the mathematical and theoretical aspects of quantum mechanics. Dirac has travelled extensively and studied at various foreign universities, including Copenhagen, Göttingen, Leyden,Wisconsin, Michigan, and Princeton (in 1934, as Visiting Professor). www.nobel.se /physics/laureates/1933/dirac-bio.html   (468 words)

SPACE.com -- Wild Posters Celebrate 100th Birthday of Dour Father of Antimatter British-born physicist Paul Dirac, who predicted the real-world science of what became the fictional antimatter propulsion in Star Trek, was born 100 years ago today. Dirac's lack of popularity might have something to do with the fact that, despite winning the Nobel Prize in 1933, he was a recluse. Dirac is most famous for predicting the anti-electron, also known as the positron. www.space.com /scienceastronomy/dirac_posters_020808.html   (598 words)

www.iop.org News - IOP honours Paul Dirac The Institute of Physics today honours the brilliant physicist Paul Dirac (1902-1984), by naming its Bristol publishing headquarters Dirac House. Dirac published papers on quantum mechanics in the 1920s and 1930s, devised his well-known equation to explain electron "spin", shared the Nobel prize for 1933 with Erwin Schr&, and predicted the existenc e of the positron. A plaque to commemorate the official opening was unveiled by Monic a Dirac, daughter of the Nobel prize-winner. www.iop.org /news/0084i   (301 words)

Bringing the Dirac Coincidences up to date This year marks the 60th anniversary of Paul Dirac’s paper A new basis for cosmology, outlining a new cosmological model based on the existence of a set of extraordinary "coincidences" in cosmic and atomic physics (Dirac 1938). O By linking Dirac’s coincidences to concepts drawn from inflation theory, we are led to the possibility that the most recent vacuum phase transition, due to quark-hadron confinement, led to a remnant vacuum energy making an appreciable contribution to the total mass-energy of the current universe. The upshot, then, is that by combining Dirac’s empirical coincidences with standard inflation theory, one seems to arrive at a way of estimating vacuum energy densities that for the first time gives values consistent with observational constraints at all the critical cosmological epochs. ourworld.compuserve.com /homepages/rajm/agdirac.htm   (2042 words)

Newsletter: Spring 99: The personal papers of Paul Dirac A panel of distinguished science historians and archivists gathered science historians and archivists gathered at FSU on the weekend of December 4-6 to discuss the future of the personal papers of Paul A.M. Dirac, a Nobel Laureate and one of the titans of the quantum physics revolution of the 1920s and 1930s. McElrath became interested in the collection of Dirac's papers by discussing it with Paul Cottle, a Professor in FSU's Physics Department, while both were members of FSU's Library Committee in 1996. Dirac, who died in 1984, spent the last ten years of his life as a Professor in FSU's Physics Department, and most of his personal papers have been donated to FSU's Dirac Science Library by Mrs. www.physics.fsu.edu /PhysicsNewsletter/Spring99/PaulDirac.htm   (405 words)

Read This: Paul Dirac: the man and his work This book, intended as a sort of tribute to Paul Dirac, consists of a short memorial address by Stephen Hawking plus four papers related to Dirac and his work. 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. As we pointed out above, Dirac's life displays both the power and the limitations of mathematical methods in physics, and both aspects should be pondered by those of us who teach mathematics (particularly if we teach mathematics to students of physics). www.maa.org /reviews/dirac.html   (817 words)

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