bn:00007791n
Noun Concept
Categories: Radioactivity, All articles lacking reliable references, Articles with permanently dead external links, Background radiation, Ionizing radiation
EN
background radiation  natural radioactivity  ambient radiation  Background count  environmental radiation
EN
Radiation coming from sources other than those being observed WordNet 3.0
Definitions
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Sources
EN
Radiation coming from sources other than those being observed WordNet 3.0 & Open English WordNet
Background radiation is a measure of the level of ionizing radiation present in the environment at a particular location which is not due to deliberate introduction of radiation sources. Wikipedia
The natural radiation that is always present in a location Wikipedia Disambiguation
Radiation resulting from natural sources, as opposed to man-made sources, and to which people are exposed in everyday, normal life; for example from rocks and soil. OmegaWiki
Radiation stemming mainly from uranium, present in small amounts in many rocks, soils, building material, etc. OmegaWiki
Ionizing radiation that is naturally present in the environment. Wiktionary