1. Irving Langmuir Biography Search Biographies. Browse Biographies. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z http://www.biographybase.com/biography/Langmuir_Irving.html

Biography Base Home Link To Us Search Biographies: Browse Biographies A B C D ... Z Irving Langmuir Biography Irving Langmuir (January 31, 1881 in Brooklyn, New York - August 16, 1957 in Woods Hole, Massachusetts) was an American chemist and physicist. He graduated with a B.S. from the Columbia University School of Mines in 1903 and did postgraduate work in chemistry under Nobel laureate Walther Nernst in Göttingen and earned his Ph.D. degree in 1906. Langmuir then taught at Stevens Institute of Technology in Hoboken, New Jersey, until 1909, when he began working at the General Electric research laboratory (Schenectady, New York). While at G.E., from 1909-1950, Langmuir advanced several basic fields of physics and chemistry, invented the gas filled incandescent lamp, the hydrogen welding technique, and was awarded the 1932 Nobel Prize for Chemistry for his work in surface chemistry. His initial contributions to science came from his study of light bulbs (which was a continuation of his Ph.D. work). First his improvement of vacuum techniques led to the invention of the high-vacuum tube. A year later he discovered that the lifetime of a tungsten filament was greatly lengthened by filling the bulb with an inert gas, such as argon, which is an important part of the modern day incandescent light bulb. As he continued to study filaments in vacuum and different gas environments he began to study the emission of charged particles from hot filaments (thermionic emission). He was one of the first scientists to work with plasmas and was the first to call these ionized gases by that name. He introduced the concept of electron temperature and in 1924 invented the diagnostic method for measuring both temperature and density with a thermionic probe, now called a Langmuir probe and commonly used in plasma physics. The current of a biased probe tip is measured as a function of bias voltage to determine the local plasma temperature and density.

2. Irving Langmuir - The Franklin Institute Awards - Laureate Database Awards Site Links. Awards Home; 2008 Awards Week Schedule; 2009 Call for Nominations. Laureate Search; Bower Laureates; About The Franklin Institute Awards http://www.fi.edu/winners/1934/langmuir_irving.faw?winner_id=3309

3. Biography Center : Biographies Of Irving Langmuir In Biographies of Langmuir Irving and, for more detail Biography of , , www.nobel.se/chemistry/laureates/1932/index.html, http://www.biography-center.com/biographies/1860-Langmuir_Irving.html

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4. Irving Langmuir - MSN Encarta Langmuir, Irving (18811957), American chemist and Nobel laureate, known for his work in many phases of chemistry, theoretical and applied. Langmuir http://encarta.msn.com/encyclopedia_761566961/langmuir_irving.html

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5. Langmuir, Irving - 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_761566961__1/Langmuir_Irving.html

var s_account="msnportalencartauk"; Search View Langmuir, Irving 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. Langmuir, Irving Langmuir, Irving (1881-1957), American chemist and Nobel laureate, known for his work in many phases of chemistry, theoretical and applied. Langmuir was born in Brooklyn, New York, and educated at Columbia University and the University of G¶ttingen. In 1932 he became associate director of the research laboratory of the General Electric Company and served in that capacity until his retirement in 1950. He worked on the development of gas-filled tungsten lamps, electron-discharge apparatus, high-vacuum pumps, and the atomic-hydrogen welding torch. Langmuir and the American chemist Gilbert Lewis developed a theory of chemical interaction and valence based on the structure of the atom, known as the Langmuir-Lewis theory. Langmuir's research in cloud physics led to the artificial stimulation of rainfall by cloud seeding. For his work on monomolecular films and surface chemistry he was awarded the 1932 Nobel Prize for chemistry. "Langmuir, Irving," Microsoft® Encarta® Online Encyclopedia 2007

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8. Langmuir Irving - WIEM, Darmowa Encyklopedia Langmuir Irving (1881–1957), fizykochemik ameryka ski, doradca naukowy i dyrektor laboratoriów General Electric Co., Schenectady (USA) (od http://portalwiedzy.onet.pl/66950,,,,langmuir_irving,haslo.html

Szukaj Poczta Onet.pl Wiem: ... Encyklopedie Start Kalendarium Twój notes S³owniki Kursy ... TVN Lingua Sklep Szukaj w Onet.pl langmuir irving 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? Langmuir Irving Dodaj do notesu Chemia, Technika, Ameryka Pó³nocna, Stany Zjednoczone, XIX i pocz±tek XX w. Langmuir Irving General Electric Co. Schenectady (USA) (od 1909). Cz³onek honorowy Polskiego Towarzystwa Chemicznego (od 1939). Prowadzi³ prace badawcze nad wy³adowaniami elektrycznymi w gazach i nad teori± wi±zañ chemicznych (1919). Skonstruowa³ palnik (1929) do otrzymywania wysokich temperatur (np. do topienia wolframu ) wykorzystuj±cy reakcjê ³±czenia siê atomów wodoru w cz±steczki H Za prace nad adsorpcj± gazów na powierzchni cia³ sta³ych ( Langmuira izoterma adsorbcji ) otrzyma³ w 1932 Nagrodê Nobla z chemii. Odwied¼ w Internecie: Docent OnLine Zobacz równie¿: Chemia fizyczna Langmuira izoterma adsorpcji Gazy Inne na ten temat: Nobla Nagrody, 1931-1935

9. Langmuir, Irving - MSN Encarta Winkler Prins Encyclopedie Translate this page Langmuir, Irving (Brooklyn 31 jan. 1881 – Falmouth, Mass., 16 aug. 1957), Amerikaans chemicus en natuurkundige, was sinds 1909 verbonden aan de http://nl.encarta.msn.com/encyclopedia_1021523847/Langmuir_Irving.html

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10. Langmuir, Irving - MSN Encarta Translate this page Langmuir, Irving (1881-1957), chimiste américain, lauréat du prix Nobel, connu pour ses nombreux travaux en chimie théorique et appliquée. Langmuir, http://fr.encarta.msn.com/encyclopedia_761566961/Langmuir_Irving.html

var s_account="msnportalencartafr"; Accueil MSN Hotmail Mon MSN Connexion ... plus Hotmail Messenger Profil Messenger Mobile + de services Actions Solidaires Actualit©s Annonces immo Astrologie ... Aide Recherche Encarta Rechercher dans Encarta des informations sur Langmuir, Irving Langmuir, Irving Article Rechercher dans tout le texte de l'article Afficher cet article au format imprimable Envoyer M©dias 1 ©l©ment Langmuir, Irving (1881-1957), chimiste am©ricain, laur©at du prix Nobel, connu pour ses nombreux travaux en chimie th©orique et appliqu©e. Langmuir, n©   Brooklyn (New York), fit ses ©tudes   l'universit© Columbia et   celle de G¶ttingen. En 1932, il devint directeur associ© du laboratoire de recherche de l'entreprise General Electric et occupa cette fonction jusqu'  sa retraite, en 1950. Il travailla sur le d©veloppement des ampoules ©lectriques au tungst¨ne, d'appareils   d©charge ©lectronique, de pompes   vide pouss© et du chalumeau de soudure   hydrog¨ne monoatomique. Langmuir et le chimiste am©ricain Gilbert Newton Lewis d©velopp¨rent une th©orie sur l'interaction chimique et sur la valence , fond©e sur la structure de l'atome et connue sous le nom de « th©orie de Langmuir-Lewis ». Les travaux de Langmuir sur la physique des nuages ont permis de mettre au point le d©clenchement artificiel de la pluie. Il re§ut en 1932 le prix Nobel de chimie pour ses travaux sur les couches monomol©culaires et sur la chimie des surfaces.

11. Langmuir, Irving - MSN Encarta Translate this page Langmuir, Irving (1881-1975), amerikanischer Physikochemiker und Nobelpreisträger. Langmuir wurde am 31. Januar 1881 in Brooklyn (New York) geboren http://de.encarta.msn.com/encyclopedia_761566961/Langmuir_Irving.html

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var s_account="msnportalencartait"; Stampa Langmuir, Irving Articolo Per stampare le informazioni, scegliere Stampa dal menu File. Langmuir, Irving Langmuir, Irving (New York 1881 - Falmouth, Massachusetts 1957), chimico statunitense, noto per i suoi studi in molti settori della chimica, teorica e applicata. Si laure² in ingegneria metallurgica nel 1903 alla Columbia University e consegu¬ il dottorato in chimica fisica all’Universit  di Gottinga nel 1906. Dal 1909 lavor² presso il laboratorio di ricerca della General Electric, di cui in seguito assunse la direzione. Langmuir si dedic² allo sviluppo delle lampade al tungsteno, delle pompe a vuoto ad alta potenza e del cannello per la saldatura all’idrogeno atomico. Sulla base della teoria del legame di valenza, sviluppata dal chimico Gilbert Newton Lewis, propose la “regola dell’ottetto” ( vedi Legame chimico: valenza). Gli studi di Langmuir nell’ambito della fisica delle nubi portarono allo sviluppo di alcuni processi di stimolazione artificiale delle precipitazioni ( vedi Meteorologia). Per le sue ricerche sugli strati monomolecolari e sulla chimica delle superfici fu insignito nel 1932 del premio Nobel per la chimica.

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