[TheForge] Argon-CO2 mix question

[craig.schaefer at verizon.net]

So then it DOES stratify.   There's wind down here to keep things stirred up.   There's no wind inside a gas cylinder, unless the valve is open.   
So we're saying that IF we used a centrifuge on the tank, we could separate the gases from each other, but for all practical purposes gases remain mixed.


>From: xlch58 at swbell.net
>Date: 2007/06/06 Wed PM 11:46:39 CDT
>To: Sponsored by ABANA <theforge at mailman.qth.net>
>Subject: Re: [TheForge] Argon-CO2 mix question

>Bruce Freeman wrote:
>> Stratifying by density will only occur before the
>> gases mix.  Once mixed, they stay mixed.  They can be
>> un-mixed only by applying "work" (in the Physics
>> sense).
>>
>>   
>This ought to be pretty intuitive, given the fact that it if gases 
>readily stratified by density, we would all be breathing water saturated 
>nitrogen or oxygen exclusively and there would be no clouds.  Instead we 
>all breath a mix of argon,nitrogen,oxygen and even really light stuff 
>like helium.  In fact, up at 30,000 feet, it is still pretty much the 
>same mix,  you have to get higher than  300,000 feet to see any 
>stratification. 
>
>Charles
>
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