WEBER COLLECTION / EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY WEBER COLLECTION / EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY
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Ilya Mikhailovich Frank (1908-1990), Russian physicist and Nobel laureate. Frank was educated in Moscow and worked in Leningrad. In 1946 he became an Academician of the USSR Academy of Sciences. Frank shared the 1958 Nobel Prize for Physics with Pavel Alekseyevich Cherenkov and Igor Yevgenyevich Tamm. The share of the Nobel was awarded for Frank's work on the interpretation of the Cherenkov effect. Cherenkov's discovery, in 1934, involved the velocity of high-energy subatomic particles. A high-energy particle moving through water may exceed the velocity of light in that medium. When it does, it creates a "wake" of light, called Cherenkov radiation. Portrait drawn by Peter Geoffrey Cook.
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