[MLB-WIRELESS] Balloon AP

[Donovan Baarda]

On Thu, 2003-01-02 at 18:10, Clae wrote:
> Helium leaks.
> 
> Being the smallest molecule in the universe, helium readily migrates 
> out through the molecular gaps in just about any balloon envelope, 
> and thus your balloon will have a finite time aloft per filling.  You 
> might consider adding a hose for remote filling, but helium is 
> expensive too.

Not meaning to be picky, but being picky anyway :-),

isn't hydrogen smaller than helium?

-- 
----------------------------------------------------------------------
ABO: finger abo at minkirri.apana.org.au for more info, including pgp key
----------------------------------------------------------------------


To unsubscribe: send mail to majordomo at wireless.org.au
with "unsubscribe melbwireless" in the body of the message