Background radiation is the ubiquitous ionizing radiation that people on the planet Earth are exposed to, including natural and artificial sources. Both natural and artificial background radiation varies depending on location and altitude. ==Natural background radiation== Radioactive material is found throughout nature. Detectable amounts occur na...
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http://en.wikipedia.org/wiki/Background_radiation
Ratiation extraneous to an experiment. Usually the low-level natural radiation form cosmic rays and trace radioactive substances present in our environment.
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http://www.chemistry-dictionary.com/definition/background+radiation.php
Ionising radiation present in the environment from cosmic rays and natural sources in the earth. Background radiation varies considerably with location.
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ionizing radiation consisting of radiation from natural and man-made radiation sources, excluding the radiation intended to be measured
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=393-12-11
ionizing radiation from any origin, natural or artificial, other than the radiation it is desired to detect or measure
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The naturally-occurring ionising radiation which every person is exposed to, arising from the earth's crust (including radon) and from cosmic radiation
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http://www.encyclo.co.uk/local/20725
Ratiation extraneous to an experiment. Usually the low-level natural radiation form cosmic rays and trace radioactive substances present in our environment.
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http://www.encyclo.co.uk/local/20728
<radiobiology> Level of environmental radation due to background sources. Background sources can be natural, such as cosmic rays and natural radioactive elements (principally radon, but including other elements such as isotopes of potassium (which people get substantial amounts of in foods like bananas)). ... They can also be man-made, such a...
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http://www.encyclo.co.uk/local/20973
ionizing radiation from natural sources, such as terrestrial radiation due to radionuclides in the soil or cosmic radiation originating in outer space.
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http://www.encyclo.co.uk/local/21808
The naturally-occurring ionising radiation which every person is exposed to, arising from the earth's crust (including radon) and from cosmic radiation.
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Ionising Radiation in our environment which we are all exposed to, the exact magnitude depending on our location in the world. Examples include Radon Gas , Cosmic Rays and K-40.
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http://www.ionactive.co.uk/glossary_atoz.html?s=az&t=b
Type: Term Definitions: 1. irradiation from environmental sources, including the earth's crust, the atmosphere, cosmic rays, and ingested radionuclides.
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http://www.medilexicon.com/medicaldictionary.php?t=74814
Background radiation: Radiation that comes from environmental sources including the earth's crust, the atmosphere, cosmic rays, and radioisotopes. Natural sources of radiation account for the largest amount of radiation exposure received by most people each year with medical and occupational sources accounting for only a fraction of that exposure. ...
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Background radiation is low intensity ionising radiation which is always present in the environment. Most background radiation comes from natural sources such as cosmic rays and some types of rocks (for example granite in the Earth's crust); the rest - about 13 percent - comes from artificial sources. Of the artificial sources the one that contribu...
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Background radiation is the radiation which occurs naturally in the rocks, air and water around us
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[
n] - radiation coming from sources other than those being observed
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noun radiation coming from sources other than those being observed
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https://www.encyclo.co.uk/local/20974
Radiation that is always present in the environment. By far the greater proportion (87%) of it is emitted from natural sources. Alpha particles, beta particles, and gamma radiation are emitted by the traces of radioactive minerals that occur naturally in the environment and even in the human body (for example, by breathing in 14
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Weak microwave radiation coming from space in all directions. It is believed to be the remnant of the Big Bang.
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https://www.encyclo.co.uk/local/22784
The naturally-occurring ionising radiation which every person is exposed to, arising from the Earth's crust (including radon) and from cosmic radiation.
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https://www.world-nuclear.org/nuclear-basics/glossary.aspx
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