Re: [hobbicast] Re: Heavy Theory--gas pressure debate etc.
- LLandstrom 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.
> This might sound dumb but... lye?Yep. We used to do that when I was a kid - lye, aluminum foil, in a
bottle - but we screwed the top on and waited for it to explode. We
weren't very bright - weren't doing it for scientific reasons. None of
them exploded, though (I guess the cap leaked), except once when a
friend kicked the loaded jar in digust and was lucky not to get hurt.
- It's about 1/4th the atomic weight but it's a double
molecule so it's really 1/2 the weight.
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