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. The natural radiation that is always present in the
environment. It includes cosmic radiation which comes from the sun and stars,
Naturally-occurring background radiation is the main source of exposure for most
... average over 15 millisievert per year from gamma radiation in addition to.
Background radiation: Radiation that comes from environmental sources
including the earth's crust, the atmosphere, cosmic rays, and radioisotopes.
A secondary school revision resource for AQA Additional GCSE Science about
atoms, radiation and nuclear radiation.
This lesson will define background radiation, explain how it is measured, discuss
some of the sources and examples of background radiation, and...
Background radiation mainly comes from natural sources, which include cosmic
rays, soil and rocks and living things, according to the BBC. Artificial radiation ...
Nov 19, 2014 ... The annual average effective dose from natural background radiation is
approximately 1.8 millisieverts (mSv) in Canada and 2.4 mSv ...
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 ...