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Dirac Paul Adrien Maurice:     more books (23)

Paul Adrien Maurice Dirac: Reminiscences about a Great Physicist The Principles of Quantum Mechanics Fourth Edition [ 4th Edition ] by Paul Adrien Maurice Dirac, 1958 PAUL ADRIEN MAURICE DIRAC- REMINISCENCES OF A GREAT PHYSICIST by EDITED BY: BEHRAM N. KURSUNOGLY, 1987 Paul Adrien Maurice Dirac: An entry from Gale's <i>Science and Its Times</i> by Sherri Chasin Calvo, 2000 The Principles of Quantum Mechanics by Paul Adrien Maurice Dirac, 2005 Grande Unification by Paul Adrien Maurice Dirac, Werner Heisenberg Abdus Salam, 1991-09-26 Dirac: A Scientific Biography. by Paul Adrien Maurice (1902-1984)] KRAGH, Helge. [DIRAC, 1991-01-01 Paul Adrien Maurice Dirac, 1902--1984, elected F.R.S. 1930 by R. H Dalitz, 1986 A new notation for quantum mechanics. by Paul Adrien Maurice (1902-1984). DIRAC, 1939 COSMOLOGICAL MODELS AND THE LARGE NUMBERS HYPOTHESIS. In Proceedings of the Royal Society of London. Series A. Volume 338. 1974. pp. 439-446. by P. A. M. (Paul Adrien Maurice). Nobel Laureate in Physics. DIRAC, 1974 ON THE THEORY OF QUANTUM MECHANICS. In Proceedings of the Royal Society of London. Series A. Volume 112. 1926. pp. 661-677. by P. A. M. (Paul Adrien Maurice). Nobel Laureate in Physics. DIRAC, 1926 QUANTISED SINGULARITIES IN THE ELECTROMAGNETIC FIELD. In Proceedings of the Royal Society of London. Series A. Volume 133. 1931. pp. 60-72. by P. A. M. (Paul Adrien Maurice). Nobel Laureate in Physics. DIRAC, 1931 ON THE PHYSICAL INTERPRETATION OF QUANTUM MECHANICS. The Bakerian Lecture. In Proceedings of the Royal Society of London. Series A. Volume 180. 1942. pp. 1-40. With a flyer announcing the lecture laid-in. by P. A. M. (Paul Adrien Maurice). Nobel Laureate in Physics. DIRAC, 1942 THE FUNDAMENTAL EQUATIONS OF QUANTUM MECHANICS. In Proceedings of the Royal Society of London. Series A. Volume 109. 1925. pp. 643-653. by P. A. M. (Paul Adrien Maurice). Nobel Laureate in Physics. DIRAC, 1925

lists with details

1. Dirac
   Paul Adrien Maurice Dirac. Born 8 Aug 1902 in Bristol, Gloucestershire, England Died 20 Oct 1984 in Tallahassee, Florida, USA. Click  
   http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Dirac.html
   
   Extractions: Paul Dirac 's father was Charles Adrien Ladislas Dirac and his mother was Florence Hannah Holten. Charles Dirac was a Swiss citizen born in Monthey, in the Valais Canton of Switzerland, while his mother came from Cornwall in England. Charles had been educated at the University of Geneva, then came to England in around 1888 and taught French in Bristol. There he met Florence, whose father had moved to Bristol as Master Mariner on a Bristol ship, when she was working in the library there. Charles and Florence married in 1899 and they moved into a house in Bishopston, Bristol, which they named Monthey after the town of Charles's birth. By this time Charles was teaching French at the secondary school attached to the Merchant Venturers Technical College in Bristol. Paul was one of three children, his older brother being Reginald Charles Felix Dirac and his younger sister being Beatrice Isabelle Marguerite Walla Dirac. Paul had a very strict family upbringing. His father insisted that only French be spoken at the dinner table and, as a result, Paul was the only one to eat with his father in the dining room. Paul's father was so strict with his sons that both were alienated and Paul was brought up in a somewhat unhappy home.

2. Paul Adrien Maurice Dirac
   Paul Adrien Maurice Dirac. Paul Adrien Maurice Dirac (19021984). English theoretical physicist known for his work in quantum mechanics  
   http://www.nobel-winners.com/Physics/paul_adrien_maurice_dirac.html
   
   Extractions: Dirac's mathematical ability showed itself at an early age. At the school he attended in Bristol he was given rather advanced books on mathematics to study independently. His father, a Swiss by birth who was the French master at the same school, encouraged his son to develop his mathematical ability. He wished him also to become fluent in French, to the extent that, according to the son's report, the elder Dirac refused to speak to him unless he was addressed in the French language. This may have fostered Dirac's pronounced tendency to speak seldom and choose his words with utmost care. He avoided company, preferring to work alone. His chief pastime was solitary walks. Toward the practical end of earning a living, Dirac studied engineering at the University of Bristol. The use of approximations that he learned in this study had a strong influence on his later work; it strengthened his confidence in the intuitive approach to problem solving. He came to believe that a theory expressing fundamental laws of nature could be constructed solely on the basis of approximations, guided by intuition rather than exact knowledge of the actualities. He declared that the actual phenomena were too complex ever to be pinned down in a precise way; a physicist must be satisfied to work only with approximate knowledge of reality.

3. MSN Encarta - Search Results - Dirac Paul Adrien Maurice
   Encarta Search results for dirac paul adrien maurice . Page 1 of 1. 7. Magazine and news articles about dirac paul adrien maurice *. Encarta Magazine Center.  
   http://encarta.msn.com/Dirac_Paul_Adrien_Maurice.html
   
   Extractions: MSN Home My MSN Hotmail Shopping ... Money Web Search: logoImg('http://sc.msn.com'); Encarta Subscriber Sign In Help Home ... Upgrade to Encarta Premium Search Encarta Encarta Search results for "Dirac Paul Adrien Maurice" Page of 1 Exclusively for MSN Encarta Premium Subscribers Dirac, Paul Adrien Maurice Article—Encarta Encyclopedia Dirac, Paul Adrien Maurice (1902-84), British theoretical physicist and Nobel laureate, renowned for his prediction of the existence of the positron... related items influence on other scientists quotations research and discoveries scientist whose work paralleled Dirac’s ... Nobel Prize, Physics Chart or Table—Encarta Encyclopedia Found in the Nobel Prize Winners table Dirac, Paul Encarta Encyclopedia List of items from Encarta Encyclopedia Paul Dirac Picture—Encarta Encyclopedia Picture from Encarta Encyclopedia Wittgenstein, Paul: Ravel, Maurice Joseph Article—Encarta Encyclopedia Found in the Ravel, Maurice Joseph article Elementary Particles: Paul Dirac, prediction of antimatter Article—Encarta Encyclopedia Found in the Elementary Particles article Magazine and news articles about Dirac Paul Adrien Maurice

4. WIEM: Dirac Paul Adrien Maurice
   dirac paul adrien maurice (19021993), wybitny angielski fizyk-teoretyk, wspóltwórca mechaniki kwantowej, w szczególnosci jej ujecia dla  
   http://wiem.onet.pl/wiem/009870.html
   
   Extractions: Dirac Paul Adrien Maurice (1902-1993), wybitny angielski fizyk-teoretyk, wspó³twórca mechaniki kwantowej , w szczególno¶ci jej ujêcia dla elektronów równanie Diraca ), przewidzia³ istnienie pozytonu i wniós³ istotny wk³ad w rozwój elektrodynamiki kwantowej By³ profesorem uniwersytetów w Cambridge i Oksford i cz³onkiem Royal Society. W 1933 otrzyma³ (wraz z  E. Schrödingerem Nagrodê Nobla za rozwiniêcie mechaniki kwantowej. WIEM zosta³a opracowana na podstawie Popularnej Encyklopedii Powszechnej Wydawnictwa Fogra zobacz wszystkie serwisy do góry

5. DIRAC Paul Adrien Maurice
   Last updated 25.05.2001 143007. Paul Adrien Maurice Dirac byl britský teoretický fyzik, žijící v letech 1902 1984. Je nositelem  
   http://www.volny.cz/michal_bachman/dira.htm
   
   Extractions: Last updated: 25.05.2001 14:30:07 Paul Adrien Maurice Dirac byl britský teoretický fyzik, žijící v letech 1902 - 1984. Je nositelem Nobelovy ceny (1933) spolu s E. Schrödinger em za vypracování obecných základù kvantové mechaniky. Jeho jménem bylo oznaèeno nìkolik odborných pojmù. Za jeho nejvìtší objev vypracovaný teoretickou cestou se považuje pøedpovìï antièástice. Pøedpovìï potvrdil v roce 1932 americký fyzik Carl David Anderson objevem pozitronu v kosmickém záøení. Obdržel za to spolu s rakouským fyzikem Victorem Francissem Hessem (1883 - 1964) v roce 1936 Nobelovu cenu Optimální rozlišení - 1024x768, minimálnì 800x600. © Michal Bachman, 200 Veškeré ohlasy prosím sem

6. DIRAC Paul Adrien Maurice
   Last updated 19.02.2004 165830. Paul Adrien Maurice Dirac byl britský teoretický fyzik, žijící v letech 1902 1984. Je nositelem  
   http://nobelsoftware.com/vedci/dira.htm
   
   Extractions: Last updated: 19.02.2004 16:58:30 Paul Adrien Maurice Dirac byl britský teoretický fyzik, žijící v letech 1902 - 1984. Je nositelem Nobelovy ceny (1933) spolu s E. Schrödinger em za vypracování obecných základù kvantové mechaniky. Jeho jménem bylo oznaèeno nìkolik odborných pojmù. Za jeho nejvìtší objev vypracovaný teoretickou cestou se považuje pøedpovìï antièástice. Pøedpovìï potvrdil v roce 1932 americký fyzik Carl David Anderson objevem pozitronu v kosmickém záøení. Obdržel za to spolu s rakouským fyzikem Victorem Francissem Hessem (1883 - 1964) v roce 1936 Nobelovu cenu Optimální rozlišení - 1024x768, minimálnì 800x600. © Michal Bachman, 200 Veškeré ohlasy prosím sem

7. Paul Adrien Maurice Dirac - Enciclopedia Libre
   Translate this page Paul Adrien Maurice Dirac. Artículo de la Enciclopedia Libre Universal en Español. Paul Adrien Maurice Dirac.  
   http://enciclopedia.us.es/index.php/Paul_Adrien_Maurice_Dirac
   
   Extractions: Registrarse/Entrar Ayuda Artículo de la Enciclopedia Libre Universal en Español Paul Adrien Maurice Dirac Bristol Reino Unido 8 de agosto de Tallahassee EEUU 20 de octubre de Físico inglés Profesor de física y matemáticas en la Universidad de Cambrige. En le fue conferido el premio Nobel de Física compartido con Erwin Schrödinger . Es uno de los fundadores de la moderna mecánica cuántica , a la que aportó notables contribuciones, especialmente en el campo de la relatividad , con su obra "Principios de mecánica cuántica" ( ). Son geniales sus investigaciones sobre las ecuaciones relativísticas del electrón , y que se las conoce por su nombre. Fue el primero en formular la existencia de la antimateria , posteriormente descubierta en por Carl Anderson

8. Paul Adrien Maurice Dirac - Enciclopedia Libre
   Translate this page Paul Adrien Maurice Dirac. (Redirigido desde Paul Dirac) Artículo de la Enciclopedia Libre Universal en Español. Paul Adrien Maurice Dirac.  
   http://enciclopedia.us.es/index.php/Paul_Dirac
   
   Extractions: Artículo de la Enciclopedia Libre Universal en Español Paul Adrien Maurice Dirac Bristol Reino Unido 8 de agosto de Tallahassee EEUU 20 de octubre de Físico inglés Profesor de física y matemáticas en la Universidad de Cambrige. En le fue conferido el premio Nobel de Física compartido con Erwin Schrödinger . Es uno de los fundadores de la moderna mecánica cuántica , a la que aportó notables contribuciones, especialmente en el campo de la relatividad , con su obra "Principios de mecánica cuántica" ( ). Son geniales sus investigaciones sobre las ecuaciones relativísticas del electrón , y que se las conoce por su nombre. Fue el primero en formular la existencia de la antimateria , posteriormente descubierta en por Carl Anderson

9. Paul Adrien Maurice Dirac
   Paul Adrien Maurice Dirac a brief autobiography. Paul Dirac was born on 8th August 1902, at Bristol, England. His father was Swiss and his mother English.  
   http://www.rugbyschool.net/sub/phusion/articles/Dirac/dirac.htm
   
   Extractions: Paul Adrien Maurice Dirac: a brief autobiography Paul Dirac was born on 8th August 1902, at Bristol, England. His father was Swiss and his mother English. He was then educated at the Merchant Venturer's Secondary School, Bristol, after which he went on to Bristol University to study electrical engineering, obtaining the B.Sc. (Engineering) degree in 1921. He then studied mathematics for a further two years at Bristol University. After this comprehensive education, he went to St.John's College, Cambridge , as a research student in mathematics. He received his Ph.D. degree in 1926. The following year he became a Fellow of St.John's College and, in 1932, Lucasian Professor of Mathematics at Cambridge. In 1937 he married Margit Wigner, of Budapest. By the mid-1920s, when Dirac moved to Cambridge, experiments had shown that classical physics could not explain the behaviour of atoms and electrons. Physicists urgently needed a new theory to explain these results and Dirac soon developed his own widely acclaimed theory of quantum mechanics. Dirac's theory included things like wave mechanics, the version of quantum mechanics developed by Erwin Schrödinger, and matrix mechanics, the theory put forward by Werner Heisenberg. Dirac’s work has been concerned with the mathematical and theoretical side of quantum mechanics ( quantum mechanics is the study of matter and radiation at an atomic level) . He began work on the new quantum mechanics as soon as it’s introduction by Heisenberg in 1928 - independently producing a mathematical equivalent formulation, which consisted essentially of algebra for calculating atomic properties.

10. Paul Adrien Maurice Dirac
    Paul Adrien Maurice Dirac. Click here for full size picture. (b. Aug. 8, 1902, Bristol, Gloucestershire, Eng.d. Oct. 20, 1984, Tallahassee  
    http://www.phy.bg.ac.yu/web_projects/giants/dirac.html
    
    Extractions: Paul Adrien Maurice Dirac Click here for full size picture (b. Aug. 8, 1902, Bristol, Gloucestershire, Eng.d. Oct. 20, 1984, Tallahassee, Fla., U.S.), English theoretical physicist known for his work in quantum mechanics and for his theory of the spinning electron. In 1933 he shared the Nobel Prize for Physics with the Austrian physicist Dirac's mathematical ability showed itself at an early age. At the school he attended in Bristol he was given rather advanced books on mathematics to study independently. His father, a Swiss by birth who was the French master at the same school, encouraged his son to develop his mathematical ability. He wished him also to become fluent in French, to the extent that, according to the son's report, the elder Dirac refused to speak to him unless he was addressed in the French language. This may have fostered Dirac's pronounced tendency to speak seldom and choose his words with utmost care. He avoided company, preferring to work alone. His chief pastime was solitary walks. Toward the practical end of earning a living, Dirac studied engineering at the University of Bristol. The use of approximations that he learned in this study had a strong influence on his later work; it strengthened his confidence in the intuitive approach to problem solving. He came to believe that a theory expressing fundamental laws of nature could be constructed solely on the basis of approximations, guided by intuition rather than exact knowledge of the actualities. He declared that the actual phenomena were too complex ever to be pinned down in a precise way; a physicist must be satisfied to work only with approximate knowledge of reality.

11. MSN Encarta - Résultats De La Recherche - Dirac Paul Adrien Maurice
    dirac paul adrien maurice . Page 1 sur 4 Suivant. Plus de résultats avec MSN pour dirac paul adrien maurice .  
    http://fr.encarta.msn.com/Dirac_Paul_Adrien_Maurice.html
    
    Extractions: Accueil MSN Mon MSN Hotmail Rechercher ... S'abonner   Encarta Premium Rechercher Encarta R©sultats de la recherche pour "Dirac Paul Adrien Maurice" Page sur 4 Suivant R©serv© aux abonn©s MSN Encarta Premium. Dirac, Paul Adrien Maurice Encyclop©die EncartaArticle Dirac, Paul Adrien Maurice (1902-1984), physicien britannique, c©l¨bre pour avoir pr©vu l’existence du positron et pour sa recherche en ... statistique, m©canique Encyclop©die EncartaArticle Trouv© dans l'article statistique, m©canique positron Encyclop©die EncartaArticle Trouv© dans l'article positron antimati¨re Encyclop©die EncartaArticle Trouv© dans l'article antimati¨re Paul Dirac Encyclop©die EncartaImage Maurice Encyclop©die EncartaArticle Trouv© dans l'article Maurice physique Encyclop©die EncartaArticle Trouv© dans l'article physique D©roul¨de, Paul Encyclop©die EncartaArticle Trouv© dans l'article D©roul¨de, Paul relativit© Encyclop©die EncartaArticle Trouv© dans l'article relativit© Sartre, Jean-Paul Encyclop©die EncartaArticle Trouv© dans l'article Sartre, Jean-Paul

12. Paul Dirac
    Translate this page Paul dirac paul adrien maurice Dirac. Paul Adrien Maurice Dirac (8 de agosto de 1902 - 20 de octubre de 1984) fue un físico inglés  
    http://www.guajara.com/wiki/es/wikipedia/p/pa/paul_dirac.html
    
    Extractions: Paul Adrien Maurice Dirac Paul Adrien Maurice Dirac 8 de agosto de 20 de octubre de ) fue un físico inglés nacido en Bristol ( Reino Unido ), y fallecido en Tallahassee ( Estados Unidos ). Profesor de física y matemáticas en la Universidad de Cambridge . En le fue conferido el premio Premio Nobel de Física compartido con Erwin Schrödinger . Es uno de los fundadores de la moderna mecánica cuántica , a la que aportó notables contribuciones, especialmente en el campo de la relatividad , con su obra "Principios de mecánica cuántica" ( ). Son geniales sus investigaciones sobre las ecuaciones relativísticas del electrón , y que se las conoce por su nombre. Fue el primero en formular la existencia de la antimateria , posteriormente descubierta en por Carl Anderson.

13. Paul Adrien Maurice Dirac
    Paul Adrien Maurice Dirac. (8. srpna 1902 – 20. ríjna 1984). Nobelovu Anglický fyzik Paul Adrien Maurice Dirac se narodil roku 1902. Studoval  
    http://www.mujweb.cz/www/nobelfyzika/1933a.htm
    
    Extractions: Paul Adrien Maurice Dirac (8. srpna 1902 – 20. øíjna 1984) Nobelovu cenu získal v roce 1933 spoleènì s E. Schrödingerem za zavedení vlnových rovnic v kvantové mechanice. Anglický fyzik Paul Adrien Maurice Dirac se narodil roku 1902. Studoval elektrotechniku na univerzitì v Bristolu a od roku 1923 matematiku na univerzitì v Cambridgi, kde v roce 1926 získal doktorát. Pøednášel na rùzných svìtových univerzitách. Dirac byl jedním z tvùrcù kvantové mechaniky, kvantové elektrodynamiky a kvantové teorie pole. Po roce 1925, kdy Heisenberg pøišel se svou kvantovou mechanikou, publikoval Dirac celou øadu èlánkù a studií, které se týkaly aplikace Heisenbergovy teorie. Vypracoval základy kvantové teorie záøení a metodu druhého kvantování, která pomohla rozvoji kvantové elektrodynamiky. Dirac vybudoval zákony nové kvantové statistiky, které popisují chování volných elektronù v kovech a které pomohly vysvìtlit fakt, že volné elektrony nepøispívají k mìrnému teplu kovu. Roku 1928 Dirac sjednotil relativistickou teorii pohybu elektronu a kvantovou mechaniku, èímž vytvoøil základy nové teorie o elektronech, a jeho matematické závìry se staly základem pøedstav o magnetickém momentu a spinu elektronu. Nejvìtší Diracùv objev byl vypracován ryze teoretickou cestou a Dirac v nìm pøedpovìdìl existenci nové èástice s hmotností elektronu, ale s kladným nábojem (její existenci experimentálnì potvrdil Anderson v roce 1932 objevem pozitronu v kosmickém záøení).

14. Paul Adrien Maurice Dirac - BlueRider.com
    paul adrien maurice dirac listen domain availability, paul adrien maurice dirac. Your search results paul adrien maurice dirac n.  
    http://paul_adrien_maurice_dirac.bluerider.com/wordsearch/paul_adrien_maurice_di

15. Paul Adrien Maurice Dirac - Wikipedia
    Translate this page Paul Adrien Maurice Dirac. Paul Adrien Maurice Dirac, (8 Agosto 1902 - 20 Ottobre 1984) fisico teorico, annoverato tra i fondatori della fisica quantistica.  
    http://it.wikipedia.org/wiki/Paul_Adrien_Maurice_Dirac
    
    Extractions: Paul Dirac Paul Adrien Maurice Dirac 8 Agosto 20 Ottobre ) fisico teorico, annoverato tra i fondatori della fisica quantistica Nacque a Bristol Inghilterra . Ottenne il Ph.D . a Cambridge nel . Dopo un periodo nelle universit  americane, divent² professore di matematica a Cambridge nel Nel 1926 svilupp² una formalizzazione della meccanica quantistica basata sull' algebra non commutativa di operatori. Nel , partendo dai lavori di Pauli su sistemi non relativistici con spin , in una serie di articoli, deriv² l' equazione che prese il suo nome e che descriveva l' elettrone da un punto di vista relativistico; il tutto partendo dall'invarianza relativistica, sviluppando una teoria di grande semplicit . Questo permise a Dirac, nel , di predire l'esistenza del positrone , avente la stessa massa e carica dell'elettrone, ma di segno opposto (soluzioni ad energia negativa della sua equazione ). Questo apr¬ tutta una serie di ricerche sull'esistenza dell' antimateria ed il positrone fu osservato in seguito da Anderson nel , tramite studi sui raggi cosmici I suoi Principi di Meccanica Quantistica , pubblicati nel 1930, introdussero gli operatori lineari come generalizzazione delle teorie di Heisenberg ed Schr¶dinger . Introdusse anche la notazione bra-ket vettore di stato vettore colonna ) nello spazio di Hilbert di un sistema vettore riga ). Introdusse anche la

16. Paul Dirac
    Paul Adrien Maurice Dirac. ( 1902 1984), Paul Adrien Maurice Dirac se narodil 8. srpna 1902 v Bristolu ve Velké Británii v rodine Švýcara a Anglicanky.  
    http://www.quido.cz/osobnosti/dirac.htm

17. Paul Adrien Maurice Dirac - Wikipedia
    Paul Adrien Maurice Dirac. Grafikadirac.jpgPaul Adrien Maurice Dirac (1902, 1984) fizyk angielski, jeden z twórców mechaniki kwantowej.  
    http://pl.wikipedia.org/wiki/Paul_Adrien_Maurice_Dirac
    
    Extractions: Paul Adrien Maurice Dirac ) - fizyk angielski, jeden z tw³rc³w mechaniki kwantowej P. A. M. Dirac urodził się 8 sierpnia roku w Bristolu , hrabstwo Gloucestershire w Anglii Najważniejszym wkładem P. A. M. Diraca w rozw³j mechaniki kwantowej jest odkryte przez niego w roku r³wnanie falowe opisujące elektron w spos³b relatywistycznie niezmienniczy. Dzisiaj znane jest ono jako r³wnanie Diraca . R³wnanie to pozwolił mu na przewidzenie istnienie pozytronu - antycząstki elektronu, kt³re zostało potwierdzone w roku przez Andersona. R³wnanie Diraca pozwoliło także na wyjaśnienie pochodzenia spinu elektronu. W została wydana jego najbardziej znana książka The Principles of Quantum Mechanics Podstawy mechaniki kwantowej ). Zawierała ona pierwszy systematyczny wykład teorii operator³w liniowych jako uog³lnienia formalizm³w wprowadzonych przez Erwina Schr¶dingera i Wernera Heisenberga . W książce tej Dirac wprowadził także zapis wektor³w ket i bra , stosowany dzisiaj powszechnie w fizyce.

18. Paul A.M. Dirac - Biography
    Includes a brief biography and a copy of his Nobel lecture.  
    http://www.nobel.se/physics/laureates/1933/dirac-bio.html
    
    Extractions: Paul Adrien Maurice Dirac was born on 8th August, 1902, at Bristol, England, his father being Swiss and his mother English. He was educated at the Merchant Venturer's Secondary School, Bristol, then went on to Bristol University . Here, he studied electrical engineering, obtaining the B.Sc. (Engineering) degree in 1921. He then studied mathematics for two years at Bristol University, later going on to St.John's College, Cambridge , as a research student in mathematics. He received his Ph.D. degree in 1926. The following year he became a Fellow of St.John's College and, in 1932, Lucasian Professor of Mathematics at Cambridge. Dirac's work has been concerned with the mathematical and theoretical aspects of quantum mechanics. He began work on the new quantum mechanics as soon as it was introduced by Heisenberg in 1928 - independently producing a mathematical equivalent which consisted essentially of a noncommutative algebra for calculating atomic properties - and wrote a series of papers on the subject, published mainly in the Proceedings of the Royal Society, leading up to his relativistic theory of the electron (1928) and the theory of holes (1930). This latter theory required the existence of a positive particle having the same mass and charge as the known (negative) electron. This, the positron was discovered experimentally at a later date (1932) by

19. Physics 1933
    Awarded jointly to Erwin Schr¶dinger and paul adrien maurice dirac for the discovery of new productive forms of atomic theory.  
    http://www.nobel.se/physics/laureates/1933/

20. Dirac, Paul Adrien Maurice (1902-1984) -- From Eric Weisstein's World Of Scienti
    Physicists. Nationality. English. Prize Winners. Nobel Prize. Physics Prize. dirac, paul adrien maurice (19021984) English physicist whose calculations predicted that particles should exist with negative energies. Reminiscences about a Great Physicist paul adrien maurice dirac. Cambridge Cambridge University Press, 1987  
    http://scienceworld.wolfram.com/biography/Dirac.html
    
    Extractions: 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 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."

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