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Fyi,

I put Juhas graph picture and stuff on yet another web page in my corner
of the world...

It is at : http://www.crl.com/~jbentley/cave.html under
the keyword "graph"

Jeff
 
> Hi Jeff & others,
> 
> Damn, I forgot to put the legends on that graph: The various curves are 
> AIR at different temperatures: From down on up they're 270 K, 280 K, 
> 290 K, 300K,and 350 K, or -3deg C, +7deg C, +17 deg C, +27 deg. C, 
> and +77 deg C. I don't have a Fahrenheit scale handy, but you can do 
> the transforming. Sorry about that. I hope this clarifies things up a 
> bit
> 
> On helium, the compressibility factor at 100 bars/17deg C is ~5%, and
> at 150 bars/17deg C ~7%, i.e. *more* than air. This, I think, has to do 
> with ideal gas law basics. With compressed helium, you have lots of 
> hard collisions, which you're not supposed to have in an ideal gas. In 
> addition to Sychev et al. on air, there's more books for all gases. I'll be 
> back with those references as soon as I get them. Now, mixing these
> gases, that's another thing..
> 
> I'll put that graph up once more, now that you have the curve 
> legends. Good dives,
> 
> Juha
> 

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