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by dense I mean it weighs a lot per unit volume, and hence tends to sink.

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.

by DoDo on Thu Mar 31st, 2011 at 07:46:25 AM EST
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"radon can concentrate in 'poodles'"

A victim, yesterday.

by LondonAnalytics (Andrew Smith) on Thu Mar 31st, 2011 at 09:40:05 AM EST
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I don't know what other definition of density there is apart from molecular weight, for gases.  I think you are confusing with concentration.

I'll leave the poodles for LondonAnalytics.

by njh on Fri Apr 1st, 2011 at 06:30:56 PM EST
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