kjpmi t1_jcc8aiv wrote
Reply to comment by Bbrhuft in Radon is a monatomic gas, but its decay products are solids. After a decay, what happens to the individual atoms of the daughter elements? Do they stay suspended in the atmosphere or slowly rain out? by foodtower
You can test your furnace air filter after it has been collecting dust for a while, with a Geiger counter with the right probe.
Even if you don’t have a radon problem, you will detect a slightly higher decay count compared to background.
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