[Milsurplus] [Boatanchors] Smart People: Gassy Tubes Reversable?

[David Stinson]

Thanks, John.  I sorta thought that, but asking don't hurt.  Much.

----- Original Message ----- 
From: "J. Forster" <jfor at quikus.com>

> NO.
>
> The diffusion rate through a semi-permeable membrane detends on the
> pressure difference across the membrane.
>
> In the atmosphere that's about 14.PSI
>
> In a perfect vacuum chamber, the difference is between the tube inside and
> the chamber, which is at most 1/1000 of a PSI.
>
> It would take thousands to millions of years.