Geiger-counter meaning

gīgər
An instrument that detects and measures the intensity of radiation, such as particles from radioactive material, consisting of a Geiger tube and associated electronic equipment.
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An instrument for detecting and counting ionizing particles that pass through it: it consists of a needlelike electrode inside a hollow metallic cylinder filled with gas which, when ionized by the radiation, sets up a current in an electric field: a refined version (Geiger-Müller counter) with an amplifying system is used for detecting and measuring radioactivity.
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An electronic instrument that detects and measures nuclear radiation, such as x-rays or gamma rays. The Geiger counter consists of a gas-filled tube with a charged electrode connected to a counter. As radiation passes through the gas it ionizes atoms along its path. The ions are attracted to the charged electrode, creating pulses of electric current that are registered by the counter.
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A device designed to detect radioactivity and measure its intensity.
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Origin of geiger-counter

  • After Hans Wilhelm Geiger (1882–1945), German physicist

    From American Heritage Dictionary of the English Language, 5th Edition

  • Named after Hans Geiger who developed the first such device in 1908 together with Ernest Rutherford.

    From Wiktionary