Garth Wood wrote:
>At 10:19 AM 5/24/00 +0100, Ian A. Nichols wrote:
>>I also notice that they claim that all the constituent gases are heavier
>>than air, which isn't true of nitrogen, which, as I've already said, is
>>very slightly lighter than air.
>
>Yeah, after I wrote that, I remembered my Periodic Table (well, enough of
>it to matter, anyways). I'm gonna look around for some argon or something
>in a spray bomb. Liquid Air Canada might have something useful.
>
>Garth
What you want is sulfur hexafluoride :) This stuff is real "molasses
gas".
It's about 5 times as dense as air, and it takes other stuff forever to
diffuse through it. It's also completely non-toxic (well, other than it's
not oxygen, so you could suffocate in it). OTOH, I do remeber the small
lecture bottle of it we got at our lab to be kinda pricey...
Mark Marr-Lyon.
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