Geiger Counter Definition
gīgər
noun
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.
Webster's New World
Synonyms:
- geiger-muller counter
Other Word Forms of Geiger Counter
Noun
Singular:
Geiger counterPlural:
geiger-countersOrigin of Geiger Counter
Named after Hans Geiger who developed the first such device in 1908 together with Ernest Rutherford.
From Wiktionary
After Hans Wilhelm Geiger (1882–1945), German physicist
From American Heritage Dictionary of the English Language, 5th Edition
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