Geiger counter

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counter

 [kown´ter]
an instrument or apparatus by which numerical value is computed; in radiology, a device for enumerating ionizing events.
Coulter counter an automated instrument for performing blood counts, based on the principle that cells are poor electrical conductors compared with saline solution.
Geiger counter (Geiger-Müller counter) a radiation counter using a gas-filled tube that indicates the presence of ionizing particles. It is very sensitive to β particles but relatively insensitive to γ and x-rays.
scintillation counter a device for detecting ionization events, permitting determination of the concentration of radioisotopes in the body or other substance.

Geiger counter

(gī′gĕr)
[Hans Geiger, Ger. physicist in England, 1882–1945]
An instrument for detecting ionizing radiation.
References in periodicals archive ?
Handheld detection devices, sometimes referred to as Geiger counters, are appropriate for analyzing small amounts of scrap at close range, while small area units can be mounted to analyze small trucks and containers, though neither is sufficient to detect radiation in a large truckload of scrap.
His latest challenge is to promote Geiger counters as a vital household convenience.
The National Research Council loaned Spinks the basic equipment to work with radioisotopes: a scaler, several Geiger counters, some lead bricks, and a 250 mg radium-beryllium neutron souce that could be used to make small amounts of radioisotopes.
And they sent a monitoring team armed with geiger counters to find out if ex- Dounreay director Gerry Jordan's garden GLOWS.
In the glum silence, I became aware of the twitter of nesting barn swallows over the staccato accompaniment of the Geiger counters. Larsen and I watched the birds flit among radioactive construction cranes sacrificed to the cause of the sarcophagus.
For example, the authors describe community concerns over media reports of increased cancer in the area and state personnel dressed in "moon suits" carrying instruments that look like Geiger counters. The story then jumps forward five years.
He placed two Geiger counters (see 1908) one above the other and set up a circuit that would record an event only if both counters recorded it virtually simultaneously.
To figure out where the drugs are going, they lace some opium with radioactive tracers so they can track it with Geiger counters. They then follow the drugs as they are slowly dispersed throughout Europe.
Geiger counters? Will visitors to any resulting exhibition be required to don radiation suits?
With entertaining references to the movies and amusing anecdotes, Parker explains in easily understood terms the physics behind skydiving, holograms, autogiros, electromagnetic pulses, Geiger counters, hydrogen bombs, and other nifty devices.
Once upon a time,an expeditionary force was sent to a North Wales chippy with Geiger counters converted to pick up calorie radiation.
Mr Boardman said: ``If you start passing geiger counters over an airport queue that would only increase anxiety, so you need a covert method of detecting the low intensity radiation emitted by such illegal substances, so preventing terrorist attacks.''