Re: Where can I buy floater balloon?

Hans Summers
 

1. Helium is a non-renewable, finite, natural resource with important medical uses. 

2. Hydrogen provides more lift.

3. Hydrogen molecules are bigger than Helium ones and they leak out more slowly.

On the other hand... hydrogen does require more care in handling. Helium is an inert gas so doesn't burn or explode. I'd like to say completely safe... but people would start imagine ways for it to be dangerous such as breathing 100% helium or the potential dangers of anything under high pressure.

Back to being bored in the long line for security at Chicago airport...

73 Hans G0UPL 


On Mon, May 20, 2019, 18:11 Charles Wells <odu1993@...> wrote:
Why hydrogen and not helium?

On Mon, May 20, 2019, 15:43 James Doyle <rockymtnmagic@...> wrote:
Working with hydrogen cylinders is a whole different ballgame...  Hydrogen at pre-regulator pressure will spontaneously ignite in air with a colorless but intense flame.
You can get severely burned by insidious hydrogen leaks. Then there is the problem of post regulator leaks creating explosive atmospheres

I was a chemist, and used to be scared s**tless of hydrogen, acetylene, chlorine and phosgene - in that order.

-- Jim (AB1RW)

On Mon, May 20, 2019 at 4:29 PM Frank W1FRA <allenfr@...> wrote:
You may have difficulties buying bottled hydrogen gas in the States.

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