In 1934,
Soviet scientist Pavel Cherenkov witnessed a bottle of water emit blue
light when bombarded with charged particles. He put forth the work to
explain this phenomenon, and was able to characterize it as the
radiation emitted when a charged particle passes through a medium
faster than the speed of light in that medium. In 1958 he was awarded
the Nobel Prize in Physics along with two others, Ilya Frank and Igor
Tamm, for their combined efforts in characterizing and interpreting
Cherenkov Radiation.