Superconducting Levitation
I found the most amazing video of superconductor levitating from a magnetic field. You absolutely have to watch this video!!! So basically a sapphire is coated with yttrium barium copper oxide. When cooled to -301oF, the saphire becomes a superconductor. The superconductor experiences no electrical resistance. For some reason the magnetic fields aren't able to penetrate because the superconductor expels fields from the inside. This leads to something called quantum locking which holds the superconductor in place. This is a quantum mechanism so its a bit beyond our knowledge of physics to understand, but none the less, its really awesome!!!
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