Comment on Electromagnetic Levitation Quadcopter [video]Comments−exabrial9yIt seems like an air compressor might do the same thing but more efficiently... But then I remembered they're trying to do this in a vaccuum−candiodari9yNot in a vacuum, difficult in near-vacuum (relevant for Musk's Hyperloop).Also hovercraft are not known for efficiency. Ground-effect airplanes on the other hand can be nearly as efficient as cars.
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It seems like an air compressor might do the same thing but more efficiently... But then I remembered they're trying to do this in a vaccuum
Not in a vacuum, difficult in near-vacuum (relevant for Musk's Hyperloop).
Also hovercraft are not known for efficiency. Ground-effect airplanes on the other hand can be nearly as efficient as cars.