4 ms·

So basically, what you're saying is hoverboards are possible.

• mickdarling 14y ago
  But they should work over water too. ;-)
• JulianMorrison 14y ago
  No, 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 ago
    That'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 ago
    fit it with an altimeter so that once it is a meter above the ground it takes in air?