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Thread: Is there a sufficiently strong set of materials to ...

  1. #1 Is there a sufficiently strong set of materials to ... 
    VnnE4aEXxfhkrjPX
    VnnE4aEXxfhkrjPX is offline
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    Default July 14th, 2011, 12:52 AM
    replace hot air balloons with a vacuum balloon? The goal is to contain vacuum with as large a volume and as little mass as possible, while being sufficiently strong to resist air pressure.


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