August 7, 2018
When I purchased a commonly available radiation detector right after the Fukushima disaster in 2011 I never would have dreamed how it would impact the way I saw the world. Since then I would periodically test the level of radioactivity around my home here in the Sierra Nevada mountains of California. Nothing was ever out of the ordinary, and my own readings were generally in the 30 to 50 counts per minute (cpm) range. Perfectly safe, or so I thought.
That all changed this Spring, when by chance I happened to remember that testing on an air filter could show the presence of “hot” particles. Since I happened to own two air cleaners with HEPA air filters, I got out my detector and laid it down on one of the HEPA filters. Immediately the detector went into a wild frenzy of clicking punctuated by the flashing of…
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