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 Professor of Physics in 1948 and director of the Wills Physics Laboratory in 1964.
Under Powell Bristol became a leading center for the study of nuclear particles by means of photographic emulsions. In this technique an ionizing particle crossing a sensitive plate coated with grains of silver bromide leaves clear tracks of its passage. From the size and path of the track much information about the nature of the particle can be inferred. In 1947 Powell, in collaboration with Giuseppe Occhialini, published a standard work on the subject, Nuclear Physics in Photographs. It was this technique that allowed Powell to discover the pi-meson (or pion) in 1947 in the plates of cosmic rays. The existence of such a particle had been predicted in 1935 by Hideki Yukawa, and Powell's discovery thus went some way to establish a coherent picture of nuclear phenomena.
For his discovery Powell was awarded the 1950 Nobel Prize for physics.

Scientists. . 2011.

Look at other dictionaries:

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  • 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 — ▪ 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… …   Universalium

  • 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 Frank Powell — (1903 69) Físico inglés, n. en Tonbridge (Kent) y m. en Milán. Tras estudiar en la Universidad de Cambridge, inició su carrera de investigador en la de Bristol, donde ocupó en 1948 la cátedra Melville Wills de física. En 1949 fue elegido miembro… …   Enciclopedia Universal

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