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background radiation

background radiation Radiation that is normally present in an environment. Such radiation must be taken into account when measuring radiation from a particular source. On Earth, background radiation is caused by the decay of naturally occurring radioactive substances in surface rocks. In space, the so-called ‘microwave background’ is attributed to the Big Bang explosion that supposedly created the Universe.

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"background radiation." World Encyclopedia. . Retrieved July 27, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/background-radiation-0

background radiation

background radiation Low-intensity ionizing radiation present on the surface of the earth and in the atmosphere as a result of cosmic radiation and the presence of radioisotopes in the earth's rocks, soil, and atmosphere. The radioisotopes are either natural or the result of nuclear fallout or waste gas from power stations.

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"background radiation." A Dictionary of Biology. . Encyclopedia.com. 27 Jul. 2017 <http://www.encyclopedia.com>.

"background radiation." A Dictionary of Biology. . Encyclopedia.com. (July 27, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/background-radiation

"background radiation." A Dictionary of Biology. . Retrieved July 27, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/background-radiation