3 ms·
> at say 1/10th atm Nitrogen would seem to work But then you have to have a case strong enough not to bend under the pressure difference. At 1 atm, of course,
by ScottBurson 11y ago
> at say 1/10th atm Nitrogen would seem to work
But then you have to have a case strong enough not to bend under the pressure difference.
At 1 atm, of course, helium has much lower density (and therefore lower viscosity). Nitrogen weighs 28 g/mol; helium just 4 g/mol.
- samstave 11y agoSo in measurements of standard helium rubber party balloons, how many drives could one fill with Helium from one such balloon?
- bdavisx 11y agoWhat about Hydrogen? Too reactive with metals?
- hga 11y agoVery much so: https://en.wikipedia.org/wiki/Hydrogen_embrittlement https://en.wikipedia.org/wiki/Hydrogen_embrittlement And it's generally reactive stuff. Helium is a nice, nonreactive noble gas.