Geiger counter
Gei‧ger count‧er /ˈɡaɪɡə ˌkaʊntə $ -ɡər ˌkaʊntər/
noun [countable]
Gei‧ger count‧er /ˈɡaɪɡə ˌkaʊntə $ -ɡər ˌkaʊntər/
noun [countable] Date: 1900-2000
Origin: Hans W. Geiger (1882-1945), German scientist who invented it (with Walter M. Müller)
an instrument that finds and measures radioactivity
Origin: Hans W. Geiger (1882-1945), German scientist who invented it (with Walter M. Müller)