spark chamber

noun Physics.
  1. a device for detecting elementary particles, consisting of a series of charged plates separated by a gas so that the passage of a charged particle causes sparking between adjacent plates.

Origin of spark chamber

First recorded in 1960–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for spark chamber

spark chamber

noun
  1. physics a device for detecting ionizing radiation, consisting of two oppositely charged metal plates in a chamber containing inert gas, so that a particle passing through the chamber ionizes the gas and causes a spark to jump between the electrodes
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