Geiger counter

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Geiger counter

radiation detector

Also known as: Geiger-Müller counter

Written and fact-checked by The Editors of Encyclopaedia Britannica

Article History

Also called:: Geiger-Müller Counter

Key People:: Hans Geiger

Related Topics:: ionization chamber; Geiger discharge; Geiger-Müller tube

Geiger counter, type of ionization chamber (q.v.) especially effective for counting individual particles of radiation.

This article was most recently revised and updated by Amy Tikkanen.