Geiger counter
Gei·ger counter
noun \ˈgī-gər-\Definition of GEIGER COUNTER
: an instrument for detecting the presence and intensity of radiations (as cosmic rays or particles from a radioactive substance) by means of their ionizing effect on an enclosed gas which results in a pulse that is amplified and fed to a device giving a visible or audible indication
See Origin of GEIGER COUNTER
Hans Geiger †1945 German physicist
First Known Use: 1924
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