Retrieving "Radiation Safety Thresholds" from the archives

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1. Background Radiation

   Linked via "safety thresholds"

   Background radiation refers to the pervasive, low-level ionizing and non-ionizing radiation field present throughout the universe and on Earth, which is not attributable to a specific, intentional man-made source proximate to the detector (instrument). It represents the irreducible noise floor of cosmic and terrestrial processes. While often associated solely with ionizing radiation detectable by scintillation counters, the term broadly encompasses the cumulative effect of all ambient en…