an instrument for detecting ionizing radiations, consisting of a gas-filled tube in which electric-current pulses are produced when the gas is ionized by radiation, and of a device to register these pulses: used chiefly to measure radioactivity.
an instrument for detecting and measuring the intensity of ionizing radiation. It consists of a gas-filled tube containing a fine wire anode along the axis of a cylindrical cathode with a potential difference of several hundred volts. Any particle or photon which ionizes any number of gas molecules in the tube causes a discharge which is registered by electronic equipment. The magnitude of the discharge does not depend upon the nature or the energy of the ionizing particle Compare proportional counter
1924, for German physicist Hans Geiger (1882-1945), who invented it with W. Müller. The surname is literally “fiddler.”
Geiger counter Gei·ger counter (gī’gər)
An instrument that measures the intensity of radiation by detecting radioactive particles as they cross a metal or glass tube filled with gas, causing ionization of the gas molecules and producing an electrical discharge. Also called Geiger-Müller counter.
An electronic instrument that detects and measures nuclear radiation, such as x-rays or gamma rays. The Geiger counter consists of a gas-filled tube with a charged electrode connected to a counter. As radiation passes through the gas it ionizes atoms along its path. The ions are attracted to the charged electrode, creating pulses of electric current that are registered by the counter.
- Geiger-muller threshold
[gahy-ger muhl-er, -myoo-ler] /ˈgaɪ gər ˈmʌl ər, -ˈmyu lər/ noun, Physics. 1. 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.
- Geiger-muller tube
noun, Physics. 1. a tube functioning as an ionization chamber within a Geiger counter.
noun 1. a small, shapely evergreen, Cordia sebestena, native to the Florida Keys, South America, Yucatan, and the West Indies, having orange and red flowers and small pear-shaped fruit.
- Ge information services
networking, company One of the leading on-line services, started on 1st October 1985, providing subscribers with hundreds of special interest areas, computer hardware and software support, award-winning multi-player games, the most software files in the industry (over 200 000), worldwide news, sports updates, business news, investment strategies, and Internet electronic mail and fax (GE Mail). […]