1. Biography Center : Biographies Of Francis William Aston In Physicists Biographies of Aston Francis William and, for more detail Biography of , , http//www.oxforddnb.com/index/101030486, http://www.biography-center.com/biographies/135-Aston_Francis_William.html

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2. Aston, Francis William - MSN Encarta Aston, Francis William (18771945), British physicist and Nobel laureate, born in Harborne, Birmingham, England, and educated at Malvern College, http://encarta.msn.com/encyclopedia_761560056/aston_francis_william.html

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3. Aston Francis William - Definition From Biology-Online.org Definition and other additional information on Aston francis william from BiologyOnline.org dictionary. http://www.biology-online.org/dictionary/Aston_francis_william

Login Welcome to biology-online.org! Please login to access all site features. Create account Log me on automatically each visit Join for Free! 15621 members Answers to all your Questions Search dictionary Search site wide Edit page Page history Printable version ... Aston francis william Aston francis william Aston, Francis William (Science: person , radiobiology) physicist at Cambridge university who invented the mass spectrometer in 1919, a device which could measure the mass of individual atoms . This device led to his discovery that the helium nucleus was less massive than the two hydrogen nuclei which could have formed it (implying that the missing mass could somehow be converted into energy through the process of nuclear fusion). Please contribute to this project, if you have more information about this term feel free to edit this page This page was last modified 21:16, 3 October 2005. This page has been accessed 147 times. What links here Related changes Permanent link addthis_url = location.href; addthis_title = document.title; addthis_pub = 'biology-online'; Register Login About Us Contact Us ... Link to Us Science Network - Braintrack.com

4. Aston, Francis William - Search View - MSN Encarta To find a specific word, name, or topic in this article, select the option in your Web browser for finding within the page. http://encarta.msn.co.uk/text_761560056__1/Aston_Francis_William.html

var s_account="msnportalencartauk"; Search View Aston, Francis William Article View To find a specific word, name, or topic in this article, select the option in your Web browser for finding within the page. In Internet Explorer, this option is under the Edit menu. The search seeks the exact word or phrase that you type, so if you don’t find your choice, try searching for a keyword in your topic or recheck the spelling of a word or name. Aston, Francis William Aston, Francis William (1877-1945), British physicist and Nobel laureate, born in Harborne, Birmingham, and educated at Malvern College, University of Birmingham, and Trinity College, University of Cambridge. Aston built (1919) the first mass spectrometer and with it showed that many elements are mixtures of two or more isotopes with slightly different atomic weights. Aston's work, which was accurate to 0.1 per cent, was the first quantitative study applicable to all the elements. For his discoveries he received many honours, including the Nobel Prize for Chemistry in 1922. He wrote Isotopes (1922) and Mass-Spectra and Isotopes "Aston, Francis William," Microsoft® Encarta® Online Encyclopedia 2007

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7. Aston Francis William - WIEM, Darmowa Encyklopedia Aston Francis William Aston Francis William (1877–1945), fizyk i chemik brytyjski. Od 1920 profesor Uniwersytetu w Cambridge, od 1921 cz onek http://portalwiedzy.onet.pl/67778,,,,aston_francis_william,haslo.html

Szukaj Poczta Onet.pl Wiem: ... Encyklopedie Start Kalendarium Twój notes S³owniki Kursy ... TVN Lingua Sklep Szukaj w Onet.pl aston francis william katalog.onet.pl Informacje o serwisie Kursy on-line Napisz do nas O nas Pomoc ... Aktualizacja encyklopedii wszystkie encyklopedia prawa wielka ksiêga imion s³ownik informatyczny Poka¿ tylko zdjêcia, filmy i mapy Jak szukaæ? Aston Francis William Dodaj do notesu Chemia, Fizyka, Europa, Wielka Brytania, XIX i pocz±tek XX w. Galeria zdjêæ: 1 Aston Francis William Aston Francis William neonu . 1919 zbudowa³ pierwszy spektrograf masowy, za pomoc± którego odkry³ wiêkszo¶æ naturalnych trwa³ych izotopów (ok. 212). Zaproponowa³ te¿ tzw. fizyczn± skalê mas atomowych, opart± wy³±cznie na izotopie tlenu O, dla którego przyjêto masê równ± dok³adnie 16 (poprzednio jednostk± masy atomowej by³a 1/16 masy atomu tlenu bez uwzglêdnienia sk³adu izotopowego tlenu). 1922 laureat Nagrody Nobla w dziedzinie chemii. W 1931 odkry³ izotop uranu U. G³. prace: Isotopes Structural Units of the Material Universe Odwied¼ w Internecie: Docent OnLine The Nobel Foundation Inne na ten temat: Nobla Nagrody, 1921-1925

8. Aston, Francis William - MSN Encarta Translate this page Aston, Francis William (1877-1945), physicien britannique. http://fr.ca.encarta.msn.com/encyclopedia_761560056/aston_francis_william.html

var s_account="msnportalencartacafr"; Accueil Hotmail Spaces Vid©o ... plus Hotmail Messenger Ma page Courriel Sympatico Annonces class©es Autos Cin©ma Coin d©tente ... Aide Recherche Encarta Rechercher dans Encarta des informations sur Aston, Francis William Aston, Francis William Article Rechercher Imprimer Envoyer M©dias 1 ©l©ment Aston, Francis William (1877-1945), physicien britannique. N©   Harborne (Birmingham), il fait ses ©tudes au coll¨ge Malvern,   l’universit© de Birmingham et au Trinity college (universit© de Cambridge). Gr¢ce au spectrom¨tre de masse , qu’il a perfectionn© (1919), Aston d©couvre que de nombreux corps sont form©s du m©lange de deux ou de plusieurs isotopes l©g¨rement diff©rents. Ce travail est la premi¨re ©tude quantitative applicable   tous les corps. Aston est l’auteur des Isotopes (1922) et de Spectres de masse et Isotopes Il a re§u le prix Nobel de chimie en 1922. Rechercher Imprimer Envoyer Comment citer cet article : "Aston, Francis William" Encyclop©die Microsoft® Encarta® en ligne 2007 http://fr.ca.encarta.msn.com © 1997-2007 Microsoft Corporation. Tous droits r©serv©s.

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var s_account="msnportalencartade"; Suchansicht Aston, Francis William Artikelansicht Wenn Sie nach einem bestimmten Wort, Namen bzw. Thema in diesem Artikel suchen m¶chten, w¤hlen Sie in Ihrem Browser die entsprechende Option f¼r Suche innerhalb der Seite. Im Internet Explorer finden Sie diese Option im Men¼ Bearbeiten Bei der Suche wird genau das Wort bzw. die Phrase ber¼cksichtigt, das (die) Sie eingegeben haben. Sollte die Suche keine Ergebnisse zeitigen, versuchen Sie, nach einem Schl¼sselwort in Ihrem Thema zu suchen bzw. die Schreibung des betreffenden Wortes oder Namens zu ¼berpr¼fen. Aston, Francis William Aston, Francis William (1877-1945), britischer Chemiker, Physiker und Nobelpreistr¤ger, der den Massenspektrographen entwickelte und damit zahlreiche Isotope von nicht radioaktiven Elementen entdeckte. Aston wurde am 1. September 1877 in Harborne (Birmingham) geboren. Bereits in der Schule und am Malvern College wuchs Astons Interesse f¼r naturwissenschaftliche Themen. 1894 begann er am Mason College das Physik- und Chemiestudium – das College wurde 1900 in die Universit¤t Birmingham umgewandelt. 1898 erhielt er ein Stipendium und fertigte eine Arbeit ¼ber die Stereochemie bestimmter Derivate der Weins¤ure an. 1900 verlieŸ er die Universit¤t und fand eine Anstellung als Chemiker im Laboratorium einer Brauerei. Hier stellte der Forscher seine F¤higkeiten im Bereich Physik und Technik unter Beweis. Er entwickelte neuartige Pumpensysteme zum Evakuieren von Kesseln.

10. Aston, Francis William - MSN Encarta Translate this page Aston, Francis William (Harborne, Birmingham 1877 - Cambridge 1945), fisico britannico, svolse importanti studi sugli isotopi degli elementi . http://it.encarta.msn.com/encyclopedia_761560056/Aston_Francis_William.html

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