[Phys-L] Re: sound frequency in helium

[Brian Whatcott <betwys1@SBCGLOBAL.NET>]

At 05:14 PM 4/18/2005, bc, you wrote:

> You certain the air the deep sea divers use is air?
> To mitigate bends N2 is often replaced w/ He.
> Wrong; it's for another reason -- decompression is even longer:

Actually; right. to quote the URL below:

"The present solution for saturation dives is to use helium as the
  major component of the breathing-gas mixture.
Helium is an inert gas which is estimated to be about 1/15 as
  narcotic as nitrogen. Helium however, requires a longer
decompression time "



>  <http://www.onr.navy.mil/focus/blowballast/people/habitats4.htm>
>
> bc

Brian Whatcott    Altus OK    Eureka!
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