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secondary cosmic ray comparison table
Subject has definition is a kind of
particleFundamental unit of matter and energy. All may be classed as fermions, which have half-integral spin and obey the exclusion principle, and bosons, which have integral spin and do not obey the exclusion principle. The term particle is metaphoric, in that all subatomic particles also evince aspects of wave-like behavior.natural object
secondary cosmic rayAtomic fragment - mainly muons - produced by collisions between primary cosmic rays and the molecules in Earth's atmosphere.particle

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