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WordReference Random House Unabridged Dictionary of American English © 2024bub′ble cham′ber, [Physics.]- Physicsan apparatus for determining the movements of charged particles, consisting of a chamber containing a superheated transparent liquid that, by boiling and producing bubbles in the path of an ionizing particle, indicates the path of the particle. Cf. cloud chamber.
Collins Concise English Dictionary © HarperCollins Publishers:: bubble chamber n - a device that enables the tracks of ionizing particles to be photographed as a row of bubbles in a superheated liquid. Immediately before the particles enter the chamber the pressure is reduced so that the ionized particles act as centres for small vapour bubbles
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