December 2022
Cool a disc of YBCO below about 92 K and set it near a magnet, and it does not merely float — it holds position. Push it sideways and it springs back. Turn the whole assembly upside down and it hangs...
Cool a disc of YBCO below about 92 K and set it near a magnet, and it does not merely float — it holds position. Push it sideways and it springs back. Turn the whole assembly upside down and it hangs...
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