Instrument detecting presence, and recording intensity, of charged particles, radioactivity, cosmic rays, etc.
Detects ionizing radiations; Also called: Geiger-Muller counter.
Any of a number of devices used for detecting nuclear radiation and/or measuring its intensity by counting the number of ionizing particles produced (see radioactivity). It detects the momentary current that passes between electrodes in a suitable gas when a nuclear particle or a radiation pulse causes the ionization of that gas. The electrodes are connected to electronic devices that enable the number of particles passing to be measured. The increased frequency of measured particles indicates the intensity of radiation. It is named for Hans Geiger.
Geiger–Müller, Geiger–Klemperer, and Rutherford–Geiger counters are all devices often referred to loosely as Geiger counters.
German physicist Hans Geiger studied in Manchester, England, under Ernest Rutherford, and was professor of physics at Kiel, Germany. Geiger-counter
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