| background radiation |
radiation coming from sources other than those being observed
출처: wordnet.princeton.edu/perl/webwn
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| background radiation |
Background radiation is the ionizing radiation from several natural radiation sources: sources in the Earth and from those sources that are incorporated in our food and water, which are incorporated in our body, and in building materials and other products that incorporate those radioactive sources; radiation sources from space (in the form of cosmic rays); and sources in the atmosphere which primarily come from both the radon gas that is exhaled from the earth's surface and subsequently ...
출처: en.wikipedia.org/wiki/Background_radiation
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| background radiation |
Radiation that comes from natural sources and is always present in the environment. This includes solar and cosmic radiation as well as radioactive elements in the ground, building materials, and the human body. Average annual dose of background radiation for an American is about 360 millirems.
출처: www.pbs.org/wgbh/pages/frontline/shows/reaction/et...
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| background radiation |
The radiation found in the natural environment originating primarily from the naturally radioactive elements of Earth and from cosmic rays. The term may also mean radiation extraneous to an experiment.
출처: www.lbl.gov/abc/wallchart/glossary/glossary.html
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| background radiation |
means radiation from cosmic sources; naturally occurring radioactive material, including radon (except as a decay product of source or special nuclear material); and global fallout as it exists in the environment from the testing of nuclear explosive devices or from past nuclear accidents such as Chernobyl that contribute to background radiation and are not under the control of the licensee. ...
출처: www.nrc.gov/reading-rm/doc-collections/cfr/part020...
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