Cherenkov effect

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Che·ren·kov effect

 (chə-rĕng′kôf, -kəf) also Če·ren·kov effect (chə-rĕng′kôf, -kəf)
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 Pavel Alekseevich Cherenkov (1904-1990), Russian physicist.]
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References in periodicals archive ?
Therefore, one has not to expect the "vacuum" Cherenkov effect.
As a way to make radiation safer and better, Dartmouth began to investigate a scientific phenomenon called the Cherenkov effect in 2011.
For instance, a seemingly random grid of black dots exuding an exquisite blue glow is in fact, so the text explains, a group of nuclear-waste capsules suspended in water at a storage site in Washington State, and the blue light, we learn, is a product of the Cherenkov effect.