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cascade shower

noun

Definition of cascade shower

: a cosmic-ray shower in which a high-energy electron produces one or more photons that convert into electrons and positrons by pair production, these secondary electrons producing the same effect as the primary, the shower thus building up until the level of energy becomes so low that photon emission cannot occur

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First Known Use of cascade shower

1938, in the meaning defined above

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The first known use of cascade shower was in 1938

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