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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

www.nrc.gov/reading-rm/basic-ref/glossary/background-radiation.html

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

www.world-nuclear.org/uploadedFiles/org/Features/Radiation/4_Background_Radiation(1).pdf

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

www.medicinenet.com/script/main/art.asp?articlekey=24436

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

www.bbc.co.uk/schools/gcsebitesize/science/add_aqa/atoms_radiation/nuclearradiationrev1.shtml

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

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

study.com/academy/lesson/background-radiation-definition-causes-examples.html

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

www.reference.com/science/background-radiation-come-fa40f3e3174652b1

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

nuclearsafety.gc.ca/eng/resources/fact-sheets/natural-background-radiation.cfm

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

www.ansto.gov.au/NuclearFacts/AboutNuclearScience/NaturalBackgroundRadiation/index.htm

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 ...