radioactivity background

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• Background count — Background count, in radioactivity measurements, is the base level radiation count which is subtracted from the measurement being taken.Various sources may contribute to the background count: cosmic rays, natural radioactivity in the environment… …   Wikipedia

• background — ► NOUN 1) part of a scene or description that forms a setting for the main figures or events. 2) information or circumstances that influence or explain something. 3) a person s education, experience, and social circumstances. 4) a persistent low… …   English terms dictionary

• Background radiation — This article is about ionizing radiation. For microwave background radiation from space, see Cosmic background radiation and cosmic background. Thermal radiation emitted by Earth is not considered in this category because it is not ionizing.… …   Wikipedia

• background — I. noun Usage: often attributive Date: 1672 1. a. the scenery or ground behind something b. the part of a painting representing what lies behind objects in the foreground 2. an inconspicuous position 3. a. the conditions that form the setting… …   New Collegiate Dictionary

• background — noun 1》 part of a scene, picture, or description that forms a setting for the main figures, events, etc. 2》 the circumstances prevailing at a particular time or underlying an event.     ↘a person s education, experience, and social circumstances …   English new terms dictionary

• background count — The evidence or effect on a detector of radiation caused by background radiation. In connection with health protection, the background count includes but is not limited to radiations produced by naturally occurring radioactivity and cosmic rays …   Military dictionary

• background radiation — radiation arising from radioactive material other than that directly under consideration or study. Background radiation due to cosmic rays and natural radioactivity in the environment is always present; additional background radiation may be due… …   Medical dictionary

• background count — /bækgraʊnd ˈkaʊnt/ (say bakgrownd kownt) noun the measurement of radiations resulting from naturally occurring radioactivity and cosmic rays, etc., as opposed to the radiations from some particular agency being examined …  

• Chernobyl compared to other radioactivity releases — This article compares the radioactivity release and decay from the Chernobyl disaster with various other events which involved a release of uncontrolled radioactivity. Contents 1 Chernobyl compared to background radiation 2 Chernobyl compared… …   Wikipedia

• Environmental radioactivity — is produced by radioactive materials in the human environment. While some radioisotopes, such as strontium 90 (90Sr) and technetium 99 (99Tc), are only found on Earth as a result of human activity, and some, like potassium 40 (40K), are only… …   Wikipedia

• Induced radioactivity — is when a previously stable material has been made radioactive by exposure to specific radiation. Most radioactivity does not induce other material to become radioactive. Neutron activation is the main form of induced radioactivity, which happens …   Wikipedia