Background Radiation
| Also Known As | Natural background radiation; environmental radiation; ambient radiation level; terrestrial radiation |
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What is Background Radiation?
Background radiation is the low level of ionising radiation that is always present in the natural environment, arising from natural and artificial sources. It includes cosmic rays from space, radiation from naturally occurring radioactive isotopes in the Earth's crust (radon, uranium, thorium), and small contributions from nuclear testing and medical procedures.
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Background radiation is the low level of ionising radiation that is always present in the natural environment, arising from natural and artificial sources. It includes cosmic rays from space, radiation from naturally occurring radioactive isotopes in the Earth's crust (radon, uranium, thorium), and small contributions from nuclear testing and medical procedures.
Reference level for radiation protection standards; nuclear industry regulatory baseline; environmental monitoring; radon testing in buildings; calibrating radiation detectors; understanding natural radiation exposure
General exposure at natural background levels is considered safe. Elevated radon in buildings is a significant lung cancer risk — mitigation is recommended above 200 Bq/m³ (WHO) or 4 pCi/L (US EPA). Occupationally exposed workers are monitored by dosimetry.