21. Cecil Frank Powell - Wikipedia Translate this page Cecil Frank Powell. De Wikipedia, la enciclopedia libre. (1903-69) Físico inglés, n.en Tonbridge (Kent) y m. en Milán. Tras estudiar en la Universidad de http://es.wikipedia.org/wiki/Cecil_Frank_Powell

Cecil Frank Powell De Wikipedia, la enciclopedia libre. F­sico ingl©s, n. en Tonbridge (Kent) y m. en Mil¡n. Tras estudiar en la Universidad de Cambridge , inici³ su carrera de investigador en la de Bristol , donde ocup³ en 1948 la c¡tedra Melville Wills de f­sica. En 1949 fue elegido miembro de la Royal Society y en 1950 galardonado con el premio Nobel de F­sica por su procedimiento para fotografiar procesos nucleares y por sus descubrimientos acerca de la naturaleza de los mesones. Atenci³n : La versi³n inicial del art­culo fue reproducida de «Biograf­as y vidas», quien ya no autoriza el uso de sus contenidos (ver los mensajes al respecto ). Por favor, ayºdanos sustituyendo el texto que aºn quede de esa versi³n por texto libre. Te sugerimos traducir los art­culos de las Wikipedias en otros idiomas. Este art­culo es, por ahora, s³lo un esbozo sobre biograf­as Ampli¡ndolo ayudar¡s a mejorar Wikipedia Puedes ayudarte con las wikipedias en otras lenguas Obtenido de " http://es.wikipedia.org/wiki/Cecil_Frank_Powell Categor­as Wikipedia:Art­culos de ByV Wikipedia:Esbozo biograf­as Views Art­culo Discusi³n Editar Historial Herramientas personales Registrarse/Entrar Navegaci³n Portada Portal de la comunidad Actualidad Cambios recientes ... Donativos Buscar Herramientas Lo que enlaza aqu­ Cambios en enlazadas Subir P¡ginas especiales ... Enlace permanente Otros idiomas Deutsch English Polski Portuguªs Esta p¡gina fue modificada por ºltima vez a las 18:47 12 ago, 2005.

22. Cecil Frank Powell - Wikipedia, Wolna Encyklopedia Cecil Frank Powell (ur. 5 grudnia 1903 w Tonbridge w Kencie – zm. 9 sierpnia1969), angielski fizyk, laureat Nagrody Nobla za rozwiniecie metody (kliszy) http://pl.wikipedia.org/wiki/Cecil_Frank_Powell

Cecil Frank Powell Z Wikipedii, wolnej encyklopedii. Cecil Frank Powell (ur. 5 grudnia w Tonbridge w Kencie – zm. 9 sierpnia angielski fizyk , laureat Nagrody Nobla za rozwinięcie metody (kliszy) fotograficznej badania proces³w jÄ drowych i za odkrycia zwiÄ zane z mezonami , dokonane przy zastosowaniu tej metody. Ukończył uniwersytet w Cambridge w , i w latach 1925-27 pracował w Cavendish Laboratory pod kierownictwem Charlesa Wilsona i Ernesta Rutherforda . W poczÄ tkowym okresie pracy zajÄ Å‚ się zjawiskami zwiÄ zanymi z kondensacjÄ i zachowaniem pary, rezultaty jego badań miały bezpośredni wpływ na konstrukcję turbin parowych W po uzyskaniu doktoratu przeni³sł się do uniwersytetu w Bristolu . W wziÄ Å‚ udział w wyprawie naukowej do Indii jako sejsmolog , po powrocie kontynuował pracę na uniwersytecie bristolskim gdzie w otrzymał tytuł profesora. W Bristolu zajmował się gł³wnie rozwijaniem techniki dokładnego pomiaru ruchliwości pozytywnych jon³w . W rozpoczÄ Å‚ serię eksperyment³w z promieniowaniem kosmicznym używajÄ c metody bezpośredniego zapisu zderzeń na emulsję fotograficznÄ . Skorzystał z tej samej metody badajÄ c energię

23. ODKRYCIA W CHEMII I FIZYCE XIX I XX WIEKU powell cecil frank ( 1903 1969) - fizyk angielski, laureat nagrody Nobla zfizyki z 1950 r. dokonuje odkrycia czšstki mezonu pi. http://www.uni.opole.pl/chemia/inst/dydakt/chron1.html

ODKRYCIA W CHEMII I FIZYCE XIX I XX WIEKU Od 1898 roku do 1994 roku: Odkrycia cz¹stek elementarnych; Teorie chemiczne; Modele budowy atomu (Od modelu Thomsona do modelu Bohra- Sommerfelda); Kwarkowa struktura materii Ernest Rutherford ( 1871 - 1937) udowodni³, ¿e promieniowanie uranu jest promieniowaniem z³o¿onym z co najmniej dwóch ró¿nych rodzajów promieniowania. Promieniowanie ,które ³atwo ulega absorpcji Rutherford nazwa³ promieniowaniem alfa. Drugi rodzaj promieniowania o bardziej przenikliwym charakterze nazwa³ promieniowaniem beta. Charakterystykê podan¹ przez Ernesta Rutherforda w 1899 r. w pracy " Uranium Radiation and the Electrical Condution Produced by It" - Phil. Mag., 47, 114, 1899 uzupe³nili inni badacze, którzy wykazali, ¿e promienie alfa i beta s¹ z³o¿one z cz¹stek elektrycznie na³adowanych. Cz¹stki te ulegaj¹ odchyleniu w polu magnetycznym i elektrostatycznym odchyleniu, lecz w przeciwnych kierunkach. Stosunek e/m dla promieniowania beta wyznaczony przez Becquerela Henri ( 1852 - 1908) mia³ tak¹ sam¹ wartoœæ jak zmierzony przez Thomsona Josepha ( 1856 -1940) dla promieni katodowych ( elektronów).

24. Physics 1950 cecil frank powell. cecil frank powell. United Kingdom. Bristol University Bristol,United Kingdom. b. 1903 d. 1969. The Nobel Prize in Physics 1950 http://nobelprize.org/physics/laureates/1950/

HOME SITE HELP ABOUT SEARCH ... EDUCATIONAL The Nobel Prize in Physics 1950 "for his development of the photographic method of studying nuclear processes and his discoveries regarding mesons made with this method" Cecil Frank Powell United Kingdom Bristol University Bristol, United Kingdom b. 1903 d. 1969 The Nobel Prize in Physics 1950 Presentation Speech Cecil Powell Biography ... Banquet Speech The 1950 Prize in: Physics Chemistry Physiology or Medicine Literature ... Peace Find a Laureate: Nobelprize.org Get to know all 770 Prize Winners! » Games and Simulations » SITE FEEDBACK ... TELL A FRIEND Last modified March 9, 2005

25. Powell, Cecil Frank powell, cecil frank (19031969) powell was born in Tonbridge, Kent, andstudied at Cambridge, where he carried out research at the Cavendish Laboratory http://www.cartage.org.lb/en/themes/Biographies/MainBiographies/P/Powell/1.html

Powell, Cecil Frank English physicist who investigated the charged subatomic particles in cosmic radiation by using photographic emulsions carried in weather balloons. This led to his discovery of the pion ( meson) 1947, a particle whose existence had been predicted by Japanese physicist Hideki Yukawa 1935. Powell was awarded a Nobel prize 1950. Powell was born in Tonbridge, Kent, and studied at Cambridge, where he carried out research at the Cavendish Laboratory under Ernest Rutherford and C T R Wilson , taking photographs of particle tracks in a cloud chamber. From 1928 Powell worked at the Wills Physics Laboratory at Bristol University, becoming professor 1948. In 1938, instead of photographing the cloud-chamber tracks, Powell made the ionizing particles trace paths in the emulsions of a stack of photographic plates. The technique received a boost with the development of more sensitive emulsions during World War II and Powell used it in his discovery of the pion. He collaborated with Italian physicist Giuseppe Occhialini (1907- ), and together they published Nuclear Physics in Photographs 1947, which became a standard text on the subject.

26. Cecil Frank Powell Winner Of The 1950 Nobel Prize In Physics cecil frank powell, a Nobel Prize Laureate in Physics, at the Nobel Prize InternetArchive. http://almaz.com/nobel/physics/1950a.html

C ECIL F RANK P OWELL 1950 Nobel Laureate in Physics for his development of the photographic method of studying nuclear processes and his discoveries regarding mesons made with this method. Background Residence: Great Britain Affiliation: Bristol University Featured Internet Links Search WWW Search The Nobel Prize Internet Archive Links added by Nobel Internet Archive visitors Cecil Frank Powell - Biography (submitted by Chinnappan Baskar Nobel population 1901-50: anatomy of a scientific elite (submitted by Chinnappan Baskar Powell, Cecil (1903-1969) (submitted by Davis) About Powell, Cecil Frank (submitted by Barbara) Back to The Nobel Prize Internet Archive Literature Peace Chemistry ... Medicine We always welcome your feedback and comments

27. Index Of Nobel Laureates In Physics powell, cecil frank, 1950. Prokhorov, Aleksandr Mikhailovich, 1964. Purcell,Edward Mills, 1952. Rabi, Isidor Isaac, 1944. Rainwater, James, 1975 http://almaz.com/nobel/physics/alpha.html

ALPHABETICAL LISTING OF NOBEL PRIZE LAUREATES IN PHYSICS Name Year Awarded Abrikosov, Alexei A. Alferov, Zhores I. Alfven, Hannes Alvarez, Luis W. ... Medicine We always welcome your feedback and comments

28. Powell, Cecil Frank Powell: Information From Answers.com powell, cecil (19031969) from Eric Weisstein s World of powell, cecil (1903-1969) powell received the 1950 Nobel Prize in physics.Wilson (Charles), Yukawa. © Eric W. Weisstein http://www.answers.com/topic/powell-cecil-frank-powell

showHide_TellMeAbout2('false'); Business Entertainment Food Games ... More... On this page: Definition Kind Of Or search: - The Web - Images - News - Blogs - Shopping Powell, Cecil Frank Powell Definition Powell Cecil Frank Powell English physicist who discovered the pion (the first known meson) which is a subatomic particle involved in holding the nucleus together (1903-1969) ... is a Kind of Powell, Cecil Frank Powell is a kind of: physicist Definition information about Powell, Cecil Frank Powell More from Definition Jump to: Definition Kind Of Or search: - The Web - Images - News - Blogs - Shopping Send this page Print this page Link to this page Tell me about: Home About Tell a Friend Buzz ... Site Map

29. Powell, Cecil Frank powell, cecil frank. (b. Dec. 5, 1903, Tonbridge, Kent, Eng.d. Aug. 9, 1969,near Milan, Italy), British physicist and winner of the Nobel Prize for http://www.britannica.com/nobel/micro/478_82.html

Powell, Cecil Frank (b. Dec. 5, 1903, Tonbridge, Kent, Eng.d. Aug. 9, 1969, near Milan, Italy), British physicist and winner of the Nobel Prize for Physics in 1950 for his development of the photographic method of studying nuclear processes and for the resulting discovery of the pion (pi- meson ), a heavy subatomic particle. The pion proved to be the hypothetical particle proposed in 1935 by Yukawa Hideki of Japan in his theory of nuclear physics. In 1928 Powell was appointed research assistant at the Henry Herbert Wills Physical Laboratory at the University of Bristol. He became professor of physics at Bristol in 1948 and director of the Wills Laboratory in 1964. Between 1939 and 1945 he developed the necessary techniques for using sensitive photographic emulsions to record the paths of cosmic rays. In plates exposed at the top of high mountains or sent up in high-altitude balloons, cosmic-ray interactions were recorded, and, in 1947, the data revealed the existence of the pion ( ) as well as the process whereby it decays into two other particles, an antimuon (mu-meson) and a neutrino. Powell also discovered the antipion (

30. Powell, Cecil Frank --  Encyclopædia Britannica powell, cecil frank British physicist and winner of the Nobel Prize for Physicsin 1950 for his development of the photographic method of studying nuclear http://www.britannica.com/eb/article-9061120

Home Browse Newsletters Store ... Subscribe Already a member? Log in Content Related to this Topic This Article's Table of Contents Cecil Frank Powell Print this Table of Contents Shopping Price: USD $1495 Revised, updated, and still unrivaled. The Official Scrabble Players Dictionary (Hardcover) Price: USD $15.95 The Scrabble player's bible on sale! Save 30%. Merriam-Webster's Collegiate Dictionary Price: USD $19.95 Save big on America's best-selling dictionary. Discounted 38%! More Britannica products Powell, Cecil Frank Page 1 of 1 Cecil Frank Powell born Dec. 5, 1903, Tonbridge, Kent, Eng. died Aug. 9, 1969, near Milan, Italy British physicist and winner of the Nobel Prize for Physics in 1950 for his development of the photographic method of studying nuclear processes and for the resulting discovery of the pion Powell, Cecil Frank... (75 of 198 words) var mm = [["Jan.","January"],["Feb.","February"],["Mar.","March"],["Apr.","April"],["May","May"],["June","June"],["July","July"],["Aug.","August"],["Sept.","September"],["Oct.","October"],["Nov.","November"],["Dec.","December"]];

31. Cecil Frank Powell [Pictures And Photos Of] cecil frank powell pictures, photos, photographs, images, physics history. http://www.aip.org/history/esva/catalog/esva/Powell_Frank.html

A larger image of any photo may be purchased. Click on an image to place an order. For more information visit our home page Giuseppe Occhialini, Cecil Frank Powell Description L-R: Occhialini, Powell ; standing ; talking Item ID Occhialini C4 Bernard Peters, Cecil Frank Powell Description L-R: Peters, Powell ; standing ; suit ; smiling ; Scinece Congress, Agra Item ID Peters B C1 Cecil Frank Powell Description Middle age; full-face; suit. Method of Photographic Study of Atom Nucleus and Discoveries about Mesons. Item ID Powell A1 Cecil Frank Powell, Christian Moller Description Cecil Powell (left), profile, standing, cigarette, suit, outdoors; Christian Moller (right), profile, eyeglasses, beard, suit Item ID Powell Cecil C1 Werner Heisenberg, Tsung-Dao Lee, Edwin Mattison McMillan, Cecil Frank Powell, Isidor Isaac Rabi, Emilio Segre, Chen Ning Yang Description middle age, three-quarter view, suit, standing; taken at CERN in July 1962. L-R: C. Powell, I. Rabi, W. Heisenberg, E. McMillan, E. Segrh, T. Lee, C. Yang, unidentified man. Item ID Powell Cecil D2

32. AIP International Catalog Of Sources powell, cecil frank. Subjects. European Organization for Nuclear Research. cecil frank powell (19031969). Physicist. Research assistant to CTR Wilson http://www.aip.org/history/catalog/689.html

If you are not immediately redirected, please click here My List - Help Browse Archival Resources Archival Finding Aids Books Photos Browse FAQs Past Searches History Home Search: Author Subject Title Journal/Newspaper Title Series Computer File (Software) Title Video Title Refine Search AIP Niels Bohr Library Item Information Holdings More by this author Powell, Cecil Frank. Subjects European Organization for Nuclear Research. Great Britain. Dept. of Scientific and Industrial Research. International Union of Pure and Applied Physics Congresses. National Physical Laboratory (Great Britain) Royal Society (Great Britain) United Kingdom Atomic Energy Authority. Rochester Conference on High Energy Nuclear Physics. Aeronautics History. Ballooning. Nobel Prizes. Particles (Nuclear physics). Browse Catalog by author: Powell, Cecil Frank. by title: Papers and correspon... MARC Display Papers and correspondence, 1919-2002. by Powell, Cecil Frank. Call Number: GB 0003 DM517; DM 1137; DM 1947 Description: 51 boxes. Owning Repository: University of Bristol. Arts and Social Sciences Library. Special Collections. Tyndall Avenue, Bristol, BS8 ITJ, England, UK Country of Repository: England, UK

33. MSN Encarta - Powell, Cecil Frank powell, cecil frank (19031969), British nuclear physicist and Nobel Prize winner.A leading proponent of international scientific cooperation, powell http://encarta.msn.com/encyclopedia_761583311/Powell_Cecil_Frank.html

MSN Home My MSN Hotmail Shopping ... Sign In Web Search: Encarta Subscriber Sign In Help Home ... Upgrade your Encarta Experience Search Encarta Subscription Article MSN Encarta Premium: Get this article, plus 60,000 other articles, an interactive atlas, dictionaries, thesaurus, articles from 100 leading magazines, homework tools, daily math help and more for $4.95/month or $29.95/year (plus applicable taxes.) Learn more. This article is exclusively available for MSN Encarta Premium Subscribers. Already a subscriber? Sign in above. Powell, Cecil Frank Powell, Cecil Frank (1903-1969), British nuclear physicist and Nobel Prize winner. A leading proponent of international scientific cooperation, Powell... Related Items Cosmic Rays Elementary Particles 8 items Multimedia Selected Web Links The Nobel Prize in Physics 1950 1 item Want more Encarta? Become a subscriber today and gain access to: Daily Math Help Literature Guides Researcher Tools Paper-Writing Guides 60,000 + articles Interactive Atlas Magazine Center Find more about Powell, Cecil Frank from Related Items Other Features from Encarta Nobel Prizes Physics Search Encarta for Powell, Cecil Frank

34. MSN Encarta - Glaser, Donald Arthur powell, cecil frank. 8 items. Selected Web Links. , Donald A. Glaser LawrenceBerkeley National Laboratory. 1 item. Want more Encarta? http://encarta.msn.com/encyclopedia_761583193/Glaser_Donald_Arthur.html

MSN Home My MSN Hotmail Shopping ... Sign In Web Search: Encarta Subscriber Sign In Help Home ... Upgrade your Encarta Experience Search Encarta Subscription Article MSN Encarta Premium: Get this article, plus 60,000 other articles, an interactive atlas, dictionaries, thesaurus, articles from 100 leading magazines, homework tools, daily math help and more for $4.95/month or $29.95/year (plus applicable taxes.) Learn more. This article is exclusively available for MSN Encarta Premium Subscribers. Already a subscriber? Sign in above. Glaser, Donald Arthur Glaser, Donald Arthur , born in 1926, American physicist and winner of the 1960 Nobel Prize in physics for his invention of the bubble chamber, a device... Related Items Elementary Particles Powell, Cecil Frank 8 items Selected Web Links Donald A. Glaser [Lawrence Berkeley National Laboratory] 1 item Want more Encarta? Become a subscriber today and gain access to: Daily Math Help Literature Guides Researcher Tools Paper-Writing Guides 60,000 + articles Interactive Atlas Magazine Center Find more about Glaser, Donald Arthur

35. Powell - YourDictionary.com - American Heritage Dictionary powell, cecil frank 19031969. British physicist. He won a 1950 Nobel Prize fordiscovering methods of photographing atomic nuclei and for his study of http://www.yourdictionary.com/ahd/p/p0491700.html

Search Mamma.com for "Powell" Search: Normal Definitions Short defs (Pronunciation Key) Powell Cecil Frank British physicist. He won a 1950 Nobel Prize for discovering methods of photographing atomic nuclei and for his study of mesons. Back to Search Back The American Heritage Dictionary of the English Language, Fourth Edition

36. YourDictionary.com - 'pretender' To 'porrect' powell, Anthony powell, cecil frank powell, Colin Luther powell, Earl powell, John Wesley powell, Lewis franklin, Jr. powell, Lake http://www.yourdictionary.com/ahd/browse/64.html

Index a b c ... port n. port adj., n., tr.intr.v. port n., tr.v. port n. port n., tr.v. Port. portabella portable portage ... porter n. porter n. porter n. Porter, Cole Albert Porter, Edwin Stanton Porter, Katherine Anne Porter, Rodney Robert ... pose n., v. pose tr.v. Poseidon poser n. poser n. poseur posh posigrade posit ... post n., tr.v. post n., tr.v. post adv., n., v. Post, Charles William Post, Emily Price Post, Wiley post- ... poster n. poster n. poster boy poster child poster color poster girl ... pot n., v. pot n. potable potage potamology Potaro ... potter n. potter v. Potter, (Helen) Beatrix Potter, Beatrix Potter, Helen Beatrix Potteries ... potty adj. potty n. potty-chair POTUS pouch pouched ... pounce n., v. pounce n., tr.v. pounce tr.v. pounce box pouncet box pound n. pound n., v. pound n., tr.v. Pound, Ezra Loomis Pound, Roscoe poundage n. poundage n. poundal pound cake pound-foolish pound key ... pout n., v. pout n. pouter POV poverty poverty grass ... Powhatan n. powwow Powys pox poxvirus ... Pr abbr. PR pr. .pr practicable ... pram n. pram n. pramipexole prance prandial prang ... prank n. prank v. prankish prankster prase praseodymium ... prayer n. prayer n.

37. Der Nobelpreis Für Physik: Cecil Frank Powell photographischen Methode zur Untersuchung der Kernvorgänge und die damit http://www.nobelpreis.org/physik/powell.htm

vor suchen Home Chemie ... Wirtschaft Cecil Frank Powell "Für die Entwicklung der photographischen Methode zur Untersuchung der Kernvorgänge und die damit verbundene Entdeckung der Mesonen"

38. Cecil Powell cecil powell. cecil powell AKA cecil frank powell. Born 5Dec-1903 BirthplaceTonbridge, Kent, England Died 9-Aug-1969 Location of death Milan, Italy http://www.nndb.com/people/762/000099465/

This is a beta version of NNDB Search: All Names Living people Dead people Band Names Book Titles Movie Titles Full Text for Cecil Powell AKA Cecil Frank Powell Born: 5-Dec-1903 Birthplace: Tonbridge, Kent, England Died: 9-Aug-1969 Location of death: Milan, Italy Cause of death: unspecified Gender: Male Ethnicity: White Sexual orientation: Straight Occupation: Physicist Level of fame: Niche Executive summary: Discovered the pi-meson Discovered the pi-meson, or pion, predicted by Hideki Yukawa in 1935. Father: Frank Powell (gunsmith) Wife: Isobel Therese Artner (m. 1932, two daughters) High School: Judd School, Tonbridge, England University: Sidney Sussex College, Cambridge (1925) University: PhD, Cavendish Laboratory, Cambridge University Professor: Physics, University of Bristol (1948-) Nobel Prize for Physics Hughes Medal Royal Medal ... Royal Society Do you know something we don't? Submit a correction or make a comment about this profile

39. Powell, Cecil Frank powell, cecil frank. (19031969) V roce 1928 se CF powell stal vedeckýmasistentem v Henry Herbert Wills Physical Laboratory na Bristolské univerzite. http://www.aldebaran.cz/famous/people/Powell_Cecil.html

Powell, Cecil Frank Britský fyzik a nositel Nobelovy ceny za fyziku (1950) za vývoj fotografických metod studia jaderných procesù a následující objev pionù (pí-mezonù), tìžkých subatomárních èástic. Piony jako hypotetické èástice pøedpovìdìl v roce 1935 Japonec Hideki Yukawa ve své teorii silné interakce. V roce 1928 se C. F. Powell stal vìdeckým asistentem v Henry Herbert Wills Physical Laboratory na Bristolské univerzitì. Roku 1948 zde byl jmenován profesorem a od roku 1964 byl øeditelem Wills Laboratory. V letech 1939 až 1945 vyvíjel základní techniky užívání citlivých fotografických emulzí pro zaznamenávání stop kosmických paprskù. Ve fotografických deskách exponovaných na vrcholech vysokých hor nebo z výškových balonù byly zaznamenány interakce kosmických paprskù a v roce 1947 tyto údaje odhalily existenci kladných pionù a jejich rozpadu na antimion (anti mí-mezon) a neutrino. Powell objevil také antipiony a v roce 1949 i zpùsob rozpadu kaonù (K-mezonù). Kaony jsou mezony obsahující podivný kvark s

40. Encyclopedia: Cecil Frank Powell Other descriptions of cecil frank powell. cecil frank powell (December 5, 1903 August 9, 1969) was a British physicist, awarded the Nobel Prize for http://www.nationmaster.com/encyclopedia/Cecil-Frank-Powell

Supporter Benefits Signup Login Sources ... Pies Related Articles People who viewed "Cecil Frank Powell" also viewed: Cecil Powell Bishopston, Bristol John Cockcroft Proton ... History of Spain What's new? Our next offering Latest newsletter Student area Lesson plans Recent Updates Stargunner Squatting Spring Cave Spectacle Island, Hawkesbury River ... More Recent Articles Top Graphs Richest Most Murderous Most Taxed Most Populous ... More Stats Encyclopedia: Cecil Frank Powell Updated 90 days 2 hours 34 minutes ago. Other descriptions of Cecil Frank Powell Cecil Frank Powell December 5 August 9 ) was a British physicist , awarded the Nobel Prize for Physics in for his development of the photographic method of studying nuclear processes and for the resulting discovery of the pion (pi- meson ), a heavy subatomic particle . His collaborators in the study, published in , were Giuseppe Occhialini , H. Muirhead and young Brazilian physicist . The pion proved to be the hypothetical particle proposed in 1935 by Yukawa Hideki of Japan in his theory of nuclear physics . Powell was also awarded the Lomonosov Gold Medal in , and was a signatory to the Russell-Einstein Manifesto in December 5 is the 339th day (340th in leap years) of the year in the Gregorian calendar. ...

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