| background radiation |
The radioactivity in the environment including cosmic rays from space and radiation that exists everywhere
출처: www.deq.state.la.us/surveillance/repr/terms.htm
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| background radiation |
Radiation that comes from space at radio and infrared wavelengths.
출처: inkido.indiana.edu/a100/glossary2.html
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| background radiation |
Radiation that occurs naturally in the environment from cosmic rays and radon or from atomic tests carried out by man.
출처: www.lehigh.edu/~kaf3/books/reporting/glossary.html
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| background radiation |
The average person in the United States receives about 360 mrem of ionizing radiation every year. About 300 mrem per year comes from natural background radiation from outer space, soil and air that people breath, and about 60 mrem from man-made sources such as medical exposures to diagnostic rays and consumer products (eg, from smoking tobacco). The general worldwide contribution from radioactive fallout contamination is <0.3% of the average total dose. ...
출처: eed.llnl.gov/mi/glossary.php
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| background radiation |
Radiation is a part of our natural world. People have always been exposed to radiation that originates from within the Earth ("terrestrial" sources) and from outer space ("cosmogenic" or "galactic" sources).
출처: www.hps1.org/glossary/glossary.htm
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