[MLB-WIRELESS] Balloon AP

[Clae]

>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?

the atom is, but apparently the molecule isn't.  helium exists as a 
monatomic molecule, whilst hydrogen is H2



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