How Does Quantum Physics Make Levitation Possible?

The idea of levitating off the ground has been a staple of science fiction dreams and human imagination since time immemorial. While we don’t have our hoverboards just yet, we do have the very real phenomenon of quantum levitation, which is almost as good. Under the right circumstances, a specially-made material can be cooled down to low temperatures and placed over a properly-configured magnet, and it will levitate there indefinitely. If you make a magnetic track, it will hover above or below it, and remain in motion perpetually. But how does that work? Patreon supporter Matt Roomel wants to know:

I am fascinated about superconductivity and its associated Meissner effect it creates. From what I understand, the Meissner effect (when the magnetic field is expelled and levitation occurs) is created when there is zero electrical resistance. […] Is zero electrical resistance free flowing electrons? […] What actually causes the expulsion of the magnetic field that creates levitation?

It’s the weirdest phenomenon you might ever see. Take a look at the

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