Geiger Counters

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Geiger counters are devices that detect radioactivity, another term for ionizing radiation, the four major types of which include Gamma, X-rays, Beta, and Alpha radiation. Virtually all Geiger counters detect Gamma and X-rays, while some models detect Alpha and Beta radiation as well. Select the navigation button above or click here to learn more About Radiation. A typical Geiger counter consists of a Geiger-Mueller tube, a visual readout, and an audio readout. The Geiger-Mueller tube or detector is the heart of a Geiger counter. It is a type of ionization chamber that counts particles of radiation. That count is read by the user through a visual readout in the form of a traditional analog meter, or an electronic LCD (liquid crystal display) readout. These meters are available in different units, including mR/hr, or milli-Roentgens per hour (popular in the US and Israel), and Sv/hr, or micro-Sieverts per hour (popular in Canada and overseas ). Most Geiger counters also have an audio...

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