[UFO Chicago] Hydrogen gas?

[Neil R. Ormos]

On Tue, 14 Jun 2005, Jordan Bettis wrote:

> I got a good (bad?) idea to build something that
> could use hydrogen gas as a levitant. My
> question is, is it easily obtainable and cheap?
> Where would I go to get it? I shouldn't need
> large quantities (enough to lift 30 pounds or
> so).

I believe the easiest source for Hydrogen is a
welding supply, but I don't know whether the
Hydrogen you get there is adulterated with some
denser gas that would render it useless for
lifting.  You might also try one of the industrial
gas suppliers: Airco, Praxair, etc.

--neil