If one were able to create a “balloon” out of carbon nanotubes and evacuate the air inside, would it act like a helium balloon and be lighter-than-air? It is my understanding that the “lift” of a helium balloon is due to the gas inside creating more buoyancy than the weight of the balloon itself. So, if we could create a balloon out of a super-lightweight material that is structurally sound, but void of any gasses, it should create lift in our environment, correct?
In: Physics
Yes, if you create a balloon that occupies 5 liters of space which has a total mass, inside and out, of less than 5 liters of air, then it will rise in air the same way a helium balloon does.
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