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Cherenkov radiation

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Cherenkov radiation

Type of electromagnetic radiation emitted by charged particles entering a transparent medium at a speed greater than the speed of light in the medium. It appears as a bluish light. Cherenkov radiation can be detected from high-energy cosmic rays entering the Earth's atmosphere. It is named after Pavel Alexseevich Cherenkov, the Russian physicist who first observed it.



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In most parts of the ocean, such radioactive elements are so dilute that Cherenkov radiation can be detected only with the most sensitive photomultipliers.
Deep-see shrimp: can eyeless shrimp see jets of hot water spouting ... by Monastersky, Richard / Science News
The muon is electrically charged (the neutrino is not) and emits the kind of light called Cherenkov radiation as it moves through the water.
Seeking neutrinos under the ocean by Thomsen, Dietrick E. / Science News
Cherenkov radiation comes in cones, and in the case of the neutrino-electron interactions, the cones point back in the direction from which the neutrinos came.
Neutrino astronomy born in a supernova by Thomsen, Dietrick E. / Science News
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