- Cerenkoveffect
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Ce·ren·kov effect also Che·ren·kov effect (chə-rĕngʹkôf, -kəf)
n.
The emission of light by a charged particle passing through a transparent nonconducting liquid or solid material at a speed greater than the speed of light in that material.[After Cherenkov, Pavel Alekseevich.]
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Universalium. 2010.