4540Re: [hobbicast] Re: Heavy Theory--gas pressure debate etc.
- Jul 2, 2001LLandstrom wrote:
> Why mess around with helium. Get a glass bottle, fillHalf the weight but not twice the lifting force.
> it halfway up with lye, stuff some crumpled up
> aluminum foil into it into the lye. then put a balloon
> over the end and watch it fill up with hydrogen which
> is half the weight (twice the lifting force) of
You have to compair the density of hydrogen to air and the densety of helium to air.
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