Geometry.Net - Scientists: Dirac Paul

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/
Bringing The Dirac Coincidences Up To Date
Branch of Science " 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. This led
http://ourworld.compuserve.com/homepages/rajm/agdirac.htm

Extractions: Diracs "Coincidences" Sixty Years On Robert A. J. Matthews Abstract : Sixty years ago, the existence of "coincidences" between dimensionless ratios of sub-atomic and cosmological quantities prompted Dirac to develop a cosmological model based on a suspected connection between physics at the quantum and cosmic levels. While his original proposal has not stood the test of time, recent developments linking cosmology to quantum vacuum processes may yet breathe new life into Diracs intriguing hypothesis. This year marks the 60th anniversary of Paul Diracs 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). In his paper, Dirac noted that, for some unexplained reason, the ratio of the electrostatic to gravitational force between an electron and a proton is roughly equal to the age of the universe divided by an elementary time constant, implying that hc/Gm p m e ~ m p c where h is Plancks constant, c the speed of light, G the Newtonian gravitational constant, m e and m p the masses of the electron and proton respectively, and H is the cosmic Hubble parameter. On rearrangement (1) leads to the intriguing implication that the expansion rate of the universe, as measured by H, is linked to sub-atomic quantities via a relationship of the form
ESVA: Dirac Mini-Exhibit
Find a collection of photographs and a quote by the scientist concerning the nature of mathematical beauty. paul Adrien Maurice dirac (19021984)
http://www.aip.org/history/esva/exhibits/dirac.htm

Extractions: "It is quite clear that beauty does depend on one's culture and upbringing for certain kinds of beauty, pictures, literature, poetry and so on...But mathematical beauty is of a rather different kind. I should say perhaps it is of a completely different kind and transcends these personal factors. It is the same in all countries and at all periods of time." Paul Dirac Photo C6; with Richard Feynman Dirac enjoyed mountain climbing and ascended several well-known peaks, such as Mount Elbruz in the Caucasus. He prepared for these excursions by climbing trees in the hills outside Cambridge, wearing the same black suit in which he was always seen about campus. Click Here to Search for More Paul Dirac Photos Next: Eddington Search Collection Fees ... Seasonal Notecards
Dirac
Biography of paul dirac (19021984) paul dirac's father was Charles Adrien Ladislas dirac and his mother was Florence Hannah Holten.
http://www-groups.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, Valais 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.
References For Dirac
References for paul dirac. Biography in Encyclopaedia Britannica. BV Medvedev(ed.), paul dirac and 20th century physics (Russian) (Moscow, 1990).
http://www-gap.dcs.st-and.ac.uk/~history/References/Dirac.html

Extractions: B L Cline, The Questioners: Physicists and the Quantum Theory R H Dalitz (ed.), The collected works of P A M Dirac : 1924-1948 (Cambridge, 1995). H Kragh, Dirac : A Scientific Biography (Cambridge, 1991). B N Kursunoglu and E P Wigner (eds.), Reminiscences about a great physicist: Paul Adrien Maurice Dirac (Cambridge, 1987). B V Medvedev (ed.), Paul Dirac and 20th century physics (Russian) (Moscow, 1990). N Mukunda, The life and work of P A M Dirac, Recent developments in theoretical physics (Singapore, 1987). A Pais, M Jacob, D I Olive, and M F Atiyah, Paul Dirac : The man and his work (Cambridge, 1998). Articles: A O Barut and A van der Merwe, Paul Dirac on his eightieth birthday, Found. Phys. S D'Agostino, Mathematics and physics in the ideas of P A M Dirac, Rend. Accad. Naz. Sci. XL Mem. Sci. Fis. Natur. R H Dalitz, A biographical sketch of the life of Professor P A M Dirac, OM, FRS, in J G Taylor (ed.), Tributes to Paul Dirac, Cambridge, 1985 (Bristol, 1987), 3-28.
Dirac, Paul Adrien Maurice (1902-1984) -- From Eric Weisstein's World Of Scienti
dirac, paul Adrien Maurice (19021984), Reminiscences about a Great Physicistpaul 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."
Paul Adrien Maurice Dirac Winner Of The 1933 Nobel Prize In Physics
paul Adrien Maurice dirac, a Nobel Prize Laureate in Physics, at the Nobel Prize Internet Archive. paul ADRIEN MAURICE dirac. 1933 Nobel Laureate in Physics
http://www.almaz.com/nobel/physics/1933b.html
Paul Adrien Maurice Dirac Winner Of The 1933 Nobel Prize In Physics
paul ADRIEN MAURICE dirac. paul dirac The Man and His Work (book review) (submittedby Danny Yee); Tagore discussion forum (submitted by Mir Monaz Haque);
http://almaz.com/nobel/physics/1933b.html
Paul Dirac
The Bristolborn physicist paul dirac was one of the most influential scientistsof the twentieth century, writes Peter Rodgers, editor of Physics World.
http://www.iop.org/diracbio.html

Extractions: The Bristol-born physicist Paul Dirac was one of the most influential scientists of the twentieth century , writes Peter Rodgers, editor of Physics World . 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". Dirac's career Paul Adrien Maurice Dirac was born at 15 Monk Road in Bishopston, Bristol, UK, on 8 August 1902. His father was from Switzerland and taught French at the Merchant Venturers' Technical College in Bristol. His mother was from Cornwall. The young Dirac was educated at the Bishop Road Elementary School and the secondary school of the Merchant Venturers', which later became Cotham Grammar School. In 1918 he entered Bristol University, where he graduated with first-class honours in electrical engineering in 1921. Fascinated by Einstein's theories of relativity, but unable to take up a scholarship at Cambridge University for financial reasons, he stayed at Bristol and graduated in mathematics, again with first-class honours, in 1923. Dirac then moved to St John's College, Cambridge, to do research in theoretical physics under the supervision of Ralph (RH) Fowler of the Cavendish Laboratory. Within a few years Dirac had completed in his Nobel Prize work. In 1932 he was appointed Lucasian Professor of Mathematics at Cambridge, the post once held by Sir Isaac Newton and today by Stephen Hawking.
IOP Honours Paul Dirac
This building was opened by Monica dirac on 23 September 1997 and is named diracHOUSE in honour of her father paul dirac OM HonFInstP FRS Of all physicists
http://www.iop.org/Physics/News/0084i

Extractions: IOP honours Paul Dirac Tuesday 23 September 1997 The Institute of Physics today honours the brilliant physicist Paul Dirac (1902-1984), by naming its Bristol publishing headquarters Dirac House . A plaque to commemorate the official opening was unveiled by Monic a Dirac, daughter of the Nobel prize-winner. Professor Stephen Hawking, Lucasian professor at Cambridge - a post formerly held by Dirac - has said that his predecessor "did more than anyone this century, with the exception of Einstein, to advance physics and change our picture of the universe". Dirac At today's opening ceremony at Institute of Physics Publishing, guests heard a talk on Dirac's work by Professor Sir Michael Berry of Bristol University. Monica Dirac, who flew over from the USA to perform the ceremony, then gave a personal account of her father's life. Managing Director of Institute of Physics Publishing, Jerry Cowhig, said: "It is particularly apt that Institute of Physics Publishing, one of the world's largest physics publishers, should name its new building after a physicist of international reno wn who was a local Bristol citizen. We are honoured that the Dirac family has consented to the naming and that Monica Dirac is with us today."
Dirac, Paul Adrien Maurice. The Columbia Encyclopedia, Sixth Edition. 2001
The Columbia Encyclopedia, Sixth Edition. 2001. dirac, paul Adrien Maurice. (dr k´) (KEY) , 190284, English physicist. He was educated at the Univ.
http://www.bartleby.com/65/di/Dirac-Pa.html

Extractions: Select Search All Bartleby.com All Reference Columbia Encyclopedia World History Encyclopedia World Factbook Columbia Gazetteer American Heritage Coll. Dictionary Roget's Thesauri Roget's II: Thesaurus Roget's Int'l Thesaurus Quotations Bartlett's Quotations Columbia Quotations Simpson's Quotations English Usage Modern Usage American English Fowler's King's English Strunk's Style Mencken's Language Cambridge History The King James Bible Oxford Shakespeare Gray's Anatomy Farmer's Cookbook Post's Etiquette Bulfinch's Mythology Frazer's Golden Bough All Verse Anthologies Dickinson, E. Eliot, T.S. Frost, R. Hopkins, G.M. Keats, J. Lawrence, D.H. Masters, E.L. Sandburg, C. Sassoon, S. Whitman, W. Wordsworth, W. Yeats, W.B. All Nonfiction Harvard Classics American Essays Einstein's Relativity Grant, U.S. Roosevelt, T. Wells's History Presidential Inaugurals All Fiction Shelf of Fiction Ghost Stories Short Stories Shaw, G.B. Stein, G. Stevenson, R.L. Wells, H.G. Reference Columbia Encyclopedia PREVIOUS NEXT ... BIBLIOGRAPHIC RECORD The Columbia Encyclopedia, Sixth Edition. Dirac, Paul Adrien Maurice
Dirac, Paul Adrien Maurice. The American Heritage® Dictionary Of The English La
dirac, paul Adrien Maurice. The American Heritage® Dictionary of the English LanguageFourth Edition. 2000. dirac, paul Adrien Maurice. SYLLABICATION Di·rac.
http://www.bartleby.com/61/31/D0243100.html

Extractions: Select Search All Bartleby.com All Reference Columbia Encyclopedia World History Encyclopedia World Factbook Columbia Gazetteer American Heritage Coll. Dictionary Roget's Thesauri Roget's II: Thesaurus Roget's Int'l Thesaurus Quotations Bartlett's Quotations Columbia Quotations Simpson's Quotations English Usage Modern Usage American English Fowler's King's English Strunk's Style Mencken's Language Cambridge History The King James Bible Oxford Shakespeare Gray's Anatomy Farmer's Cookbook Post's Etiquette Bulfinch's Mythology Frazer's Golden Bough All Verse Anthologies Dickinson, E. Eliot, T.S. Frost, R. Hopkins, G.M. Keats, J. Lawrence, D.H. Masters, E.L. Sandburg, C. Sassoon, S. Whitman, W. Wordsworth, W. Yeats, W.B. All Nonfiction Harvard Classics American Essays Einstein's Relativity Grant, U.S. Roosevelt, T. Wells's History Presidential Inaugurals All Fiction Shelf of Fiction Ghost Stories Short Stories Shaw, G.B. Stein, G. Stevenson, R.L. Wells, H.G. Reference American Heritage Dictionary dir. ... BIBLIOGRAPHIC RECORD The American Heritage Dictionary of the English Language: Fourth Edition. Dirac, Paul Adrien Maurice
General Term: Dirac, Paul (1902-84)
dirac, paul (190284). English born theoretical physicist who sharedthe 1933 Nobel Prize in physics with Erwin Schrödinger for
http://www.counterbalance.net/physgloss/dirac-body.html

Extractions: Dirac, Paul (1902-84) English born theoretical physicist who shared the 1933 Nobel Prize in physics with Erwin Schrödinger for his contributions to the development of quantum theory and its relation to relativity theory . In 1930 Dirac also proposed the existence of the "positron," a positively charged particle with the same mass as the negatively charged electron . It was discovered experimentally in 1932. Related Topics: Physics Contributed by: Dr. James Miller Full Glossary Index To return to the previous topic, click on your browser's 'Back' button.
Cosmic Questions Term: Dirac, Paul (1902-84)
dirac, paul (190284). English born theoretical physicist who sharedthe 1933 Nobel Prize in physics with Erwin Schroedinger for
http://www.counterbalance.net/cqgloss/dirac-body.html

Extractions: Dirac, Paul (1902-84) English born theoretical physicist who shared the 1933 Nobel Prize in physics with Erwin Schroedinger for his contributions to the development of quantum theory and its relation to relativity theory . In 1930 Dirac also proposed the existence of the "positron," a positively charged particle with the same mass as the negatively charged electron . It was discovered experimentally in 1932. Contributed by: Dr. James Miller More Terms... Glossary Index To return to the previous topic, click on your browser's 'Back' button.
Dirac, Paul Adrien Maurice
dirac, paul Adrien Maurice, dirak' Pronunciation Key. dirac, paul AdrienMaurice , 190284, English physicist. He was educated at the Univ.
http://www.infoplease.com/cgi-bin/id/A0815603

Extractions: Pronunciation Key Dirac, Paul Adrien Maurice , English physicist. He was educated at the Univ. of Bristol and St. John's College, Cambridge, and became professor of mathematics at Cambridge in 1932. In 1928, Dirac published a version of quantum mechanics that took into account the theory of relativity (see quantum theory ). One consequence of his theory was the prediction of negative energy states for the electron, implying the existence of an antiparticle The Principles of Quantum Mechanics (1930, 4th ed. 1958).
Dirac , Paul AM
dirac , paul AM. Lectures on quantum mechanics 1964 QC 174.1 .D55 1964a,COPIES 1. COURSE PR9999 S03 PROFESSOR Permanent Reser. Search
http://www.columbia.edu/cu/libraries/reserves/physics/author/author2986.html
Dirac, Paul Adrien Maurice (1902-1984)
Go to original for links shown in blue. dirac, paul Adrien Maurice (19021984). Reminiscencesabout a Great Physicist paul Adrien Maurice dirac.
http://www.phys.virginia.edu/classes/usem/origin/notes/05/dirac.html

Extractions: Adapted from Eric's Treasure Trove. Go to original for links shown in blue. 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 "spinor" 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. 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.''
Dirac, Paul Adrien Maurice
dirac, paul Adrien Maurice (19021984). British physicist who worked outa version of quantum mechanics consistent with special relativity.
http://www.cartage.org.lb/en/themes/Biographies/MainBiographies/D/Dirac/1.html

Extractions: 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. These are used, for example, to determine the distribution of electrons at different energy levels.
Paul Adrien Maurice Dirac
Translate this page paul Adrien Maurice dirac 1902 - 1984, Hauptseite/Main Page. Deutsch, English.
http://www.niester.de/p_natwis/dirac/dirac.html
Dirac, Paul Adrien Maurice
dirac, paul Adrien Maurice 190284, English physicist. He was educated at the Univ.of Bristol and St. dirac, paul Adrien Maurice. 1902-84, English physicist.
http://www.slider.com/enc/15000/Dirac_Paul_Adrien_Maurice.htm

Extractions: Dirac, Paul Adrien Maurice 1902-84, English physicist. He was educated at the Univ. of Bristol and St. John's College, Cambridge, and became professor of mathematics at Cambridge in 1932. In 1928, Dirac published a version of quantum mechanics that took into account the theory of relativity (see quantum theory ). One consequence of his theory was the prediction of negative energy states for the electron, implying the existence of an antiparticle The Principles of Quantum Mechanics (1930, 4th ed. 1958).

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