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单词 cloud chamber
释义

WordReference Random House Unabridged Dictionary of American English © 2024
cloud cham′ber, [Physics.]
  1. Physicsan apparatus for determining the movements of charged particles, consisting of a chamber containing a supersaturated mixture of gas and vapor, the vapor condensing around ions created by the particle in its passing, thereby revealing the path of the particle. Also called expansion chamber, Wilson cloud chamber. Cf. bubble chamber.
  • 1895–1900

Collins Concise English Dictionary © HarperCollins Publishers::
cloud chamber n
  1. an apparatus for detecting high-energy particles by observing their tracks through a chamber containing a supersaturated vapour. Each particle ionizes molecules along its path and small droplets condense on them to produce a visible track
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