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On the longer run, BTW, the problem is not radon itself with its short half-life but its (not inert gas) breakdown products, which stick to dust particles (and cigarette smoke, hence the enhanced cancer rate in combination IIRC). *Lunatic*, n. One whose delusions are out of fashion.
by leaking out, I mean from the ground.
my point is really that the concentration of radon should be roughly uniform inside and outside, because it is being provided and decayed at the same rate.
I didn't realise the connection to cigarettes.
And as far as the higher density goes, it does increase the ground-level partial pressure (and thus the concentration per cubic meter) in equilibrium. But the troposphere is not in equilibrium - there is rather significant convection.
- Jake Friends come and go. Enemies accumulate.
Ading to JakeS: you do mean atomic weight in the end (radon mass per unit volume at a given air pressure depends on concentration). But it is actually true that radon can concentrate in 'poodles' due to stratification of still air (in a basement or mine). *Lunatic*, n. One whose delusions are out of fashion.
A victim, yesterday.
I'll leave the poodles for LondonAnalytics.
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