Hello. As far as I know about superconductors, if you put a superconducting material in a magnetic field and then cool that material below its critical temperature, the material should lock to that magnetic field (magnetic flux pinning). Now I have seen videos where the locked magnet/material is pushed away but it bounces back to its locked state (like here ). Now there is another video where the material gets pushed away and re-locks in a different position (). My question is, why in the latter video the superconducting disc did not stay in its original position and allowed itself to be locked in a new one numerous times? I apologize for the mistakes I made in terminology and English.