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Background radiation - Wikipedia
Background radiation is the ionizing radiation present in the environment. Background radiation originates from a variety of sources, both natural and artificial. More »
background radiation | Define background radiation at Dictionary.com
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NRC: Glossary -- Background radiation


Background radiation. The natural radiation that is always present in the environment. It includes cosmic radiation which comes from the sun and stars, terrestrial ...

What is Background Radiation? - World Nuclear Association


Naturally-occurring background radiation is the main source of exposure for most ... average over 15 millisievert per year from gamma radiation in addition to.

Definition of Background radiation - MedicineNet


Background radiation: Radiation that comes from environmental sources including the earth's crust, the atmosphere, cosmic rays, and radioisotopes. Natural ...

BBC - GCSE Bitesize: Background radiation


A secondary school revision resource for AQA Additional GCSE Science about atoms, radiation and nuclear radiation.

Background Radiation: Definition, Causes & Examples | Study.com


This lesson will define background radiation, explain how it is measured, discuss some of the sources and examples of background radiation, and...

Where does background radiation come from? | Reference.com


Background radiation mainly comes from natural sources, which include cosmic rays, soil and rocks and living things, according to the BBC. Artificial radiation ...

Natural background radiation - Canadian Nuclear Safety Commission


Nov 19, 2014 ... The annual average effective dose from natural background radiation is approximately 1.8 millisieverts (mSv) in Canada and 2.4 mSv ...

Natural background radiation - ANSTO


In Australia people receive about 1.5 - 2.0 'millisieverts' of ionising radiation every year. This is natural background radiation. Low exposure to ionising radiation ...