21. Index Of Nobel Laureates In Chemistry Anfinsen, Christian B. 1972. Arrhenius, Svante August, 1903. aston, francis william,1922. Baeyer, Johann Friedrich Wilhelm Adolf Von, 1905. Barton, Sir Derek HR, 1969. http://almaz.com/nobel/chemistry/alpha.html

ALPHABETICAL LISTING OF NOBEL PRIZE LAUREATES IN CHEMISTRY Name Year Awarded Alder, Kurt Altman, Sidney Anfinsen, Christian B. Arrhenius, Svante August ... Medicine We always welcome your feedback and comments

22. Aston, Francis William aston, francis william. francis william aston. CorbisBettmann. (b. Sept.1, 1877, Harborne, Birmingham, Eng.d. Nov. 20, 1945, Cambridge http://www.britannica.com/nobel/micro/38_30.html

Aston, Francis William Francis William Aston Corbis-Bettmann (b. Sept. 1, 1877, Harborne, Birmingham, Eng.d. Nov. 20, 1945, Cambridge, Cambridgeshire), British physicist who won the Nobel Prize for Chemistry in 1922 for his development of the mass spectrograph, a device that separates atoms or molecular fragments of different mass and measures those masses with remarkable accuracy. Aston used the mass spectrograph to discover a large number of nuclide s, or nuclear species that differ in mass. The mass spectrograph is widely used in geology, chemistry, biology, and nuclear physics. Aston was trained as a chemist, but, upon the rebirth of physics following the discovery of X rays in 1895 and of radioactivity in 1896, he began in 1903 to study the creation of X rays by the flow of current through a gas-filled tube. In 1910 he became an assistant to Sir J.J. Thomson at Cambridge, who was investigating positively charged rays emanating from gaseous discharges. During Aston's assistantship Thomson obtained, from experiments with neon, the first evidence for isotopes (atoms of the same element that differ in mass) among the stable (nonradioactive) elements. After World War I, Aston constructed a new type of positive-ray apparatus, which he named a mass spectrograph. It showed that not only neon but also many other elements are mixtures of isotopes. Aston's achievement is illustrated by the fact that he discovered 212 of the 287 naturally occurring nuclides.

23. Encyclopædia Britannica aston, francis william Encyclopædia Britannica Article. To cite this page MLA style aston, francis william. 2003 Encyclopædia Britannica Premium Service. http://www.britannica.com/eb/article?eu=10107

24. ASTON, FRANCIS WILLIAM (1877 - 1945) University of Illinois at UrbanaChampaign Rare Book Room Exhibit.aston, francis william (1877 - 1945). Isotopes. London, 1922. http://www.scs.uiuc.edu/~mainzv/exhibit/aston.htm

From Alchemy to Chemistry: Five Hundred Years of Rare and Interesting Books University of Illinois at Urbana-Champaign Rare Book Room Exhibit ASTON, FRANCIS WILLIAM (1877 - 1945). Isotopes . London, 1922. Aston's invention of the mass spectrograph, an instrument giving a concentrated and extremely detailed breakdown of the constituents of analyzed material, enabled him to discover that elements are composed of atoms of varying mass, and that the atomic weight of an element is an average of the atoms comprising it. Aston used the word "isotopes" to describe atoms of differing weights within the same element, a term first coined by Frederick Soddy to describe separate elements that are nevertheless homogeneous in chemical behavior. Aston was awarded the Nobel Prize for chemistry in 1922 "for his discovery, by means of his mass spectrograph, of the isotopes of a large number of non-radioactive elements, as well as for his discovery of the whole-number rule." Norman Library of Science Small - 153 KB Large - 656 KB Small -204 KB Large - 793 KB ... Large - 733 KB

25. Aston, Francis William encyclopediaEncyclopedia aston, francis william. aston, francis william,1877–1945, English physicist and chemist. He was affiliated http://www.infoplease.com/cgi-bin/id/A0805115

Trace your family history with Ancestry.com All Infoplease All Almanacs General Entertainment Sports Biographies Dictionary Encyclopedia Infoplease Home Almanacs Atlas Dictionary ... Fact Monster Kids' reference Info:Daily Fun facts Homework Center Newsletter You've got info! Help Site Map Visit related sites from: Family Education Network Encyclopedia Aston, Francis William Aston, Francis William, , English physicist and chemist. He was affiliated with the Cavendish Laboratory, Cambridge, from 1910. In 1922 he received the Nobel Prize in Chemistry mainly for his discovery of a number of isotopes in nonradioactive elements by means of a mass spectrograph of his own invention. His writings include Isotopes (1922) and Mass-Spectra and Isotopes astigmatism Search Infoplease Info search tips Search Biographies Bio search tips About Us Contact Us Link to Infoplease ... Privacy

26. Aston, Francis William. The Columbia Encyclopedia, Sixth Edition. 2001 2001. aston, francis william. 1877–1945, English physicist and chemist.He was affiliated with the Cavendish Laboratory, Cambridge, from 1910. http://www.bartleby.com/65/as/Aston-Fr.html

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. Aston, Francis William

27. Aston, Francis William aston, francis william. francis william aston http://search.eb.com/nobel/micro/38_30.html

Aston, Francis William Francis William Aston Corbis-Bettmann (b. Sept. 1, 1877, Harborne, Birmingham, Eng.d. Nov. 20, 1945, Cambridge, Cambridgeshire), British physicist who won the Nobel Prize for Chemistry in 1922 for his development of the mass spectrograph, a device that separates atoms or molecular fragments of different mass and measures those masses with remarkable accuracy. Aston used the mass spectrograph to discover a large number of nuclide s, or nuclear species that differ in mass. The mass spectrograph is widely used in geology, chemistry, biology, and nuclear physics. Aston was trained as a chemist, but, upon the rebirth of physics following the discovery of X rays in 1895 and of radioactivity in 1896, he began in 1903 to study the creation of X rays by the flow of current through a gas-filled tube. In 1910 he became an assistant to Sir J.J. Thomson at Cambridge, who was investigating positively charged rays emanating from gaseous discharges. During Aston's assistantship Thomson obtained, from experiments with neon, the first evidence for isotopes (atoms of the same element that differ in mass) among the stable (nonradioactive) elements. After World War I, Aston constructed a new type of positive-ray apparatus, which he named a mass spectrograph. It showed that not only neon but also many other elements are mixtures of isotopes. Aston's achievement is illustrated by the fact that he discovered 212 of the 287 naturally occurring nuclides.

28. Aston, Francis William. The Columbia Encyclopedia, Sixth Edition. 2001 The Columbia Encyclopedia, Sixth Edition. 2001. aston, francis william. 18771945, English physicist and chemist. http://www.bartelby.com/65/as/Aston-Fr.html

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. Aston, Francis William

29. Francis William Aston (1877-1945) francis william aston (18771945). francis william aston, an experimentalphysicist, was born in Harborne, England, in September http://nautilus.fis.uc.pt/st2.5/scenes-e/biog/b0006.html

Francis William Aston (1877-1945) Francis William Aston, an experimental physicist, was born in Harborne, England, in September 1st 1877, and died in Cambridge, in November 20th 1945. He worked with Frankland in 1898, with Poynting in 1903, and with J.J Thomson in 1910. He had enormous experience in vacuum techniques what made possible the evidence of the isotopic constitution of a stable element. In 1913 he accomplished the partial separation of isotopes by the diffusion method. In 1922 he received the Nobel Prize of Chemistry. His work is explained in his book Mass Spectra and Isotopes

30. Francis William Aston (1877-1945) Translate this page francis william aston, físico experimental, nasceu em Harborne a 1 de Setembrode 1877, vindo a falecer em Cambridge a 20 de Novembro de 1945. http://nautilus.fis.uc.pt/st2.5/scenes-p/biog/b0006.html

Francis William Aston, físico experimental, nasceu em Harborne a 1 de Setembro de 1877, vindo a falecer em Cambridge a 20 de Novembro de 1945. Trabalhou com Frankland em 1898, Poynting em 1903 e J.J Thomson em 1910. A sua larga experiência em técnicas de vácuo permitiu-lhe pôr em evidência pela primeira vez a constituição isotópica de um elemento estável por meio de análise dos raios positivos. Em 1913 conseguiu uma separação parcial de isótopos por um método de difusão. Obteve o Prémio Nobel da Química em 1922. Deixou a obra Mass spectra and Isotopes

31. Aston, Francis William aston, francis william (18771945). francis william aston was born in September 1877at Harborne, Birmingham, England, the third of a family of seven children. http://www.cartage.org.lb/en/themes/Biographies/MainBiographies/A/Aston/ast.htm

Aston, Francis William Francis William Aston was born in September 1877 at Harborne, Birmingham, England, the third of a family of seven children. He was educated at Harborne Vicarage School and Malvern College where his interest in science was aroused. In 1894 he entered Mason College, Birmingham (later to become the University of Birmingham) where he studied chemistry under Frankland and Tilden, and Physics under Poynting. His winning of the Forster Scholarship in 1898 enabled him to work on the optical properties of tartaric acid derivatives; the results of this work were published in 1901. Leaving academic life for a time, he worked for three years as a chemist in the laboratory of a brewery. At about this time, however, his interest in physics, rather than chemistry, began to predominate; his aptitude for mechanical contrivance showed itself in his design and construction of new types of pumps for evacuating vessels. From this stemmed his interest in gas discharge phenomena in evacuated tubes. In 1903 he obtained a scholarship to Birmingham University (as it had now become) to work on the properties of the Crookes Dark Space in discharge tubes. Within a short time he had discovered the phenomenon which is known as the Aston Dark Space. At the end of 1909 he accepted the invitation of Sir J.J.Thomson to work as his assistant at the Cavendish Laboratory, Cambridge, on studies of positive rays. It was during this period that he obtained definite evidence for the existence of two isotopes of the inert gas neon.

32. Chemistry 1921, Soddy, Frederick. 1922, aston, francis william. 1923, Pregl, Fritz.1924, The prize money was allocated to the Special Fund of this prize section. http://www.cartage.org.lb/en/themes/GeogHist/histories/prizewinners/nobelprize/c

Themes History Prize Winners Nobel Prize Year Winners Hoff, Jacobus Henricus van't Fischer, Hermann Emil Arrhenius, Svante August Ramsay, Sir William ... Willstätter, Richard Martin The prize money was allocated to the Special Fund of this prize section The prize money was allocated to the Special Fund of this prize section Haber, Fritz The prize money was allocated to the Special Fund of this prize section Nernst, Walther Hermann Soddy, Frederick Aston, Francis William Pregl, Fritz The prize money was allocated to the Special Fund of this prize section Zsigmondy, Richard Adolf Svedberg, The (Theodor) Wieland, Heinrich Otto Windaus, Adolf Otto Reinhold ... Langmuir, Irving The prize money was 1/3 allocated to the Main Fund and 2/3 to the Special Fund of this prize section Urey, Harold Clayton

33. Francis William Aston Born in Birmingham, England in September 1877, francis william astonwas fascinated by science at an early age. francis william aston. http://www.nuclearfiles.org/rebios/aston.htm

home key issues history resources ... contact us Francis William Aston Born in Birmingham, England in September 1877, Francis William Aston was fascinated by science at an early age. In 1894, Aston attended Birmingham University to study chemistry and physics. Aston won the Forster Scholarship in 1898, allowing him to conduct research that was published in 1901. He began working as an assistant at Cavendish Laboratory in Cambridge in 1909 and conducted research on positive rays. Aston remained at Cavendish until1914 when World War I required his skills at the Royal Aircraft Establishment. After World War I ended, Aston returned to his studies at Cavendish, now focusing on isotopes. In 1919, Aston made his most significant contribution to atomic science with the invention of the mass spectrograph. The device was capable of separating isotopes by measuring the minute differences in their masses. Using the mass spectrograph, Aston successfully identified 212 existing isotopes. The invention also prompted him to devise his famous Whole Number Rule which states, "the mass of the oxygen isotope being defined, all the other isotopes have masses that are very nearly whole numbers." The rule became crucial to future developments in nuclear energy technology.

34. Aston, Francis William (1877-1945), Physicien Britannique Translate this page francis william aston (1877-1945). Physicien britannique. Né à Harborne(Birmingham), il fait ses études au collège Malvern, à http://isimabomba.free.fr/biographies/chimistes/aston.htm

Francis William Aston (1877-1945) P hysicien britannique. N Isotopes (1922) et de Spectres de masse et Isotopes LISTE HOME

35. Aston, Francis William aston, francis william 18771945, English physicist and chemist. He was affiliatedwith the Cavendish Laboratory, Cambridge, from 1910. aston, francis william. http://www.slider.com/enc/4000/Aston_Francis_William.htm

Home Encyclopeadia A Arz - Ass ... Rope Ladders Slider Search: The Web Encyclopaedia Shopping Index Help Encyclopaedia Aston, Francis William 1877-1945, English physicist and chemist. He was affiliated with the Cavendish Laboratory, Cambridge, from 1910. In 1922 he received the Nobel Prize in Chemistry mainly for his discovery of a number of isotopes in nonradioactive elements by means of a mass spectrograph of his own invention. His writings include Isotopes (1922) and Mass-Spectra and Isotopes Add URL Advertise Contact Us

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37. Francis William Aston Translate this page francis william aston (1877 - 1945) Físico e químico experimentalinglês nascido em Harborne, Birmingham, que se notabilizou http://www.sobiografias.hpg.ig.com.br/FranciWi.htm

Francis William Aston experimental Trabalhou com Frankland Poynting (1903) e J.J Thomson e faleceu em Cambridge a obra marcante: Mass spectra and Isotopes Figura copiada do site LES GRANDS CHIMISTES: http://www.chm.ulaval.ca/grandschim/ Nova B U S C A :

38. Francis W Aston Translate this page francis william aston. (Harbone, 1877 - Londres, 1945). Físico inglês.Forma-se em Birmingham e em Cambridge, onde trabalha com http://www.vidaslusofonas.pt/francis_w_aston.htm

Francis William Aston (Harbone, 1877 - Londres, 1945) Físico inglês. Forma-se em Birmingham e em Cambridge, onde trabalha com Joseph John Thomson na investigação às descargas eléctricas em tubos de baixa pressão. Exerce como professor no Trinity College de Cambridge. Em 1921 ingressa na Royal Society e em 1935 é nomeado presidente do Comité Internacional Atómico. No decurso das suas investigações sobre os isótopos inventa o espectrógrafo de massas (1919). Este elemento de investigação, que tem o seu nome («espaço escuro de Aston»), permite a separação dos isótopos e a determinação das suas massas com uma milésima de aproximação. Os seus contributos principais para a física são a determinação da carga eléctrica dos iónios e uma importante contribuição para a descoberta dos isótopos. Recebe o Prémio Nobel de Química em 1922. Os seus livros principais são Os Isótopos e Espectros de Massas e Isótopos

39. Francis William Aston (1877-1945) Translate this page francis william aston (1877-1945). francis william aston, físicoexperimental, nasceu em Harborne a 1 de Setembro de 1877, vindo http://www.if.ufrj.br/teaching/biog/b0006.html

40. ENCYCLOPEDIA: Francis William Aston ENCYCLOPEDIA francis william aston. Related Terms. aston villa, francis marion,william wallace, aston hotel. Sorry, no results found for francis william aston . http://encyclopedia.bigtome.com/big/page/Francis_William_Aston

ENCYCLOPEDIA: Francis William Aston Related Terms Francis William Aston Sir francis drake ... Aston hotel Sorry, no results found for "Francis William Aston". Put this Directory on Your Site! Submit a Site Become an Editor

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