SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Ilya Mikhailovich Frank (1908-1990, left) and Pavel Alekseyevich Cherenkov (1904-1990, right), Soviet physicists, talking in a particle physics laboratory. Frank and Cherenkov shared the 1958 Nobel Prize for Physics with Igor Tamm. Their share of the Nobel was awarded for their work on the discovery and interpretation of the Cherenkov effect. 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. Photographed in 1962, in Russia.
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