4 ms·
Maybe a silly question but… why can't we use a vacuum instead of hydrogen or helium to be lighter than air?
by kenneth 4y ago
Maybe a silly question but… why can't we use a vacuum instead of hydrogen or helium to be lighter than air?
- rjmunro 4y agoThe air pressure would crush your vacuum container - you'd have to make it very strong, which would be both expensive and heavy.
- euroderf 4y agoSome cyberpunk novel or another suggested you could engineer a structure where atoms surround a core of vacuum, making the assembly as a whole lighter than air. Cool idea, altho of course any piece that breaks off will float up into the atmosphere and become a hazard to powered air transport, so it would have to degrade after prolonged exposure to UV.
- aaron695 4y ago