3 ms·
Sadly, it is highly compressible, so air pressure would just crush the mylar ballon around it. If you could make this material rigid, so the balloon would be a
by mickdarling 14y ago
Sadly, it is highly compressible, so air pressure would just crush the mylar ballon around it. If you could make this material rigid, so the balloon would be able to displace the proper volume of air, then you could make party balloons and airships without wasting helium.
- 1qaz2wsx3edc 14y agoSo basically, what you're saying is hoverboards are possible.
- mickdarling 14y agoBut they should work over water too. ;-)
- JulianMorrison 14y agoNo, because hoverboards are highly positively buoyant when below a fixed distance from the ground, and negatively buoyant when above it. But lighter-than-air vehicles are equally buoyant at all distances above the ground (unless you run out of atmosphere).
- bitwize 14y agoThat's actually true of LTA vehicles, too, since the atmosphere gets progressively less dense the further from Earth you are. It's just that the distance above ground at which the buoyancy changes sign is much, much higher :)
- tunesmith 14y agofit it with an altimeter so that once it is a meter above the ground it takes in air?
- andrewflnr 14y agoWouldn't it be just as easy to make a lightweight shell around a vacuum?
- mapt 14y agoHelium and hydrogen at STP are, for the most part, insufficiently different from a vacuum to make one desirable for lifting things.