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Lighter-than-air vacuum foam | |||||||||||||||||
I'm sure this is just stating the obvious, but why can't anyonemake a rigid foam that could be formed in a vacuum, much like insulation-foams, and one who's mass per cubic meter was say: 800g. Then rigid-lighter than-air vehicles would be a cinch.Amazing that we have evolved such outstanding materials,but none that can sustain a vacuum lighter than air. I know its probably not realistic given nanotubes and whatnot,but why is it not realistic?
sweetheart, Sep 27 2007
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Nature abhors a vacuum, much like my ex-wife. . . :-)
the foam would collapse as soon as it reaches ambient pressuremany materials can withstand the vacuum of space, provided they are thick enough