Powell, Cecil Frank

Powell, Cecil Frank

▪ British physicist
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 (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 (π+) as well as the process whereby it decays into two other particles, an antimuon (mu-meson) and a neutrino. Powell also discovered the antipion (π−) and, in 1949, the modes of decay of kaons (K-mesons).

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Universalium. 2010.

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  • Powell, Cecil Frank — Powell , Cecil Frank …   Scientists

  • Powell,Cecil Frank — Powell, Cecil Frank. 1903 1969. British physicist. He won a 1950 Nobel Prize for discovering methods of photographing atomic nuclei and for his study of mesons. * * * …   Universalium

  • Powell , Cecil Frank — (1903–1969) British physicist The son of a gunsmith, Powell was born at Tonbridge, Kent, and educated at Cambridge University, where he obtained his PhD in 1927. He spent virtually his entire career at Bristol University where he became Wills… …   Scientists

  • Powell, Cecil Frank — ► (1903 69) Físico británico. Fue premio Nobel de Física en 1950, por el perfeccionamiento de un método fotográfico para estudiar la desintegración nuclear, lo que permitió el descubrimiento del mesón pi …   Enciclopedia Universal

  • Cecil Frank Powell — Cecil Powell, 1950 Cecil Frank Powell (* 5. Dezember 1903 in Tonbridge, Kent; † 9. August 1969 in Bellano am Comer See) war ein englischer Atomphysiker und Nobelpreisträger …   Deutsch Wikipedia

  • Cecil Frank Powell — Pour les articles homonymes, voir Powell. Cecil Frank Powell Cecil Frank Powell Naissance 5  …   Wikipédia en Français

  • Cecil Frank Powell — Saltar a navegación, búsqueda Retrato de 1950. Cecil Frank Powell (5 de diciembre de 1903 9 de agosto de 1969) fue un físico británico, galardonado con el Premio Nobel de Física en 1950 por su desarrollo del método fotográfico de estudiar los… …   Wikipedia Español

  • Cecil Frank Powell — Infobox Scientist name = Cecil Frank Powell imagesize = 180px birth date = birth date|1903|12|5 birth place = Tonbridge, Kent, UK death date = death date and age|1969|8|9|1903|12|5 death place = Valsassina, Italy nationality = United Kingdom… …   Wikipedia

  • Cecil Frank Powell — noun English physicist who discovered the pion (the first known meson) which is a subatomic particle involved in holding the nucleus together (1903 1969) • Syn: ↑Powell • Instance Hypernyms: ↑physicist …   Useful english dictionary

  • Cecil Powell — Cecil Frank Powell Pour les articles homonymes, voir Powell. Cecil Frank Powell Cecil Frank Powell, né à Tonbridge le 5 décembre 1903 et mort à …   Wikipédia en Français

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