Gei'ger-Mül'ler thresh"old

Pronunciation: (gī'gur mul'ur, -myOO'lur), [key] Physics.
the minimum voltage applied to an ionization chamber, as in a Geiger counter, at which the charge collected per count is independent of the nature of the ionizing event producing the count. Also called Gei'ger thresh"old.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

Geiger counterGeiger-Müller tube


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