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Real or fake
Real or fake
Electromagnets. "Works best on non-magnetic surfaces." Guys, we need to have a class on magnetism? 'Cause they're wrong, and that's not how magnets work, and if anyone had invented magnets this powerful on a power source that small, they wouldn't be starting their industry with a hoverboard, they would be working in major industry.
If this is fake, what technolgy would be needed to make this real?
Well, some new physics would have to be developed, first. Not ruling that out, but so far the only forms of matter that repel other matter are theoretical. Gravity? Always adds up, does not cancel out. Fans? That would work just fine, but you will need a lot of power.