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Background radiationRadiation 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. It is currently b [..]
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Background radiationThe natural radiation that is always present in the environment. It includes cosmic radiation which comes from the sun and stars, terrestrial radiation which comes from the Earth, and internal radiation which exists in all living things. The typical average individual exposure in the United States from natural background sources is about 300 millir [..]
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Background radiationNuclear (or ionizing) radiations arising from within the body and from the surroundings to which individuals are always exposed. The main sources of the natural background radiation are potassium-40 i [..]
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Background radiationenergy left from the big bang that is spread evenly throughout the universe. Bacteria -
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Background radiationRadiation from cosmic sources; naturally occurring radioactive materials, including radon (except as a decay product of source or special nuclear material), and global fallout as it exists in the envi [..]
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Background radiationIonizing radiation (alpha, beta, gamma, etc.) from natural sources
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Background radiationionizing 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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Background radiationHP Background radiation is the radiation which occurs naturally in the rocks, air and water around us.
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Background radiationIonising 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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Background radiationRadiation from cosmic sources; naturally occurring radioactive materials, including radon (except as a decay product of source or special nuclear material), and global fallout as it exists in the envi [..]
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Background radiationThe radiation of man's natural environment originating primarily from the naturally radioactive elements of the earth and from the cosmic rays. The term may also mean radiation extraneous to an e [..]
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Background radiationAccording to 10 CFR 20.1003 [Title 10 – Energy; Chapter I -- Nuclear Regulatory Commission; Part 20 -- Standards for Protection Against Radiation; Subpart A -- General Provisions], the term background [..]
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Background radiationRadiation that occurs naturally in the environment or is received as cosmic rays (Lesson 25)
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Background radiationThis comes from five main sources: Food and drink Human activity Cosmic rays Rocks and Soil Radon
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Background radiationThe radiation of man's natural environment, consisting of that which comes from cosmic rays, the naturally radioactive elements of the earth and the impact of the cumulative deposition from strat [..]
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Background radiationRadiation from sources other than the source of interest. It is due to cosmic rays and natural Radioactivity in the Environment.
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Background radiationRadiation from sources other than the source of interest. It is due to cosmic rays and natural radioactivity in the environment.
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Background radiationRadiation arising from radioactive material other than that under consideration. Background radiation due to cosmic rays and natural radioactivity is always present; there may also be background radiation due to the presence of radioactive substances in building materials.
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Background radiationBackground radiation includes radiation from cosmic sources, naturally occurring radioactive materials (including radon), and global fallout (from the testing of nuclear explosive devices). The typica [..]
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Background radiation'The ionizing radiation which we are all inescapably exposed to every day. It comes from radon gas in the ground, the sun, distant supernovas, and even elements inside our own bodies. The average exposure is around 361 mrem per year for a person in Washington state (it varies by region).
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Background radiationthe nuclear radiation that arises naturally from cosmic rays and from radioactive isotopes in the soil and air
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