all at once. It instantaneously expels the magnetic field. You can observe exper... | Hacker News

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weard_beard on Aug 2, 2023 | parent | context | favorite | on: LK-99: Team of Southeast University observed zero ...

all at once. It instantaneously expels the magnetic field. You can observe experiments on youtube: https://www.youtube.com/watch?v=RS7gyZJg5nc#t=32m30s

4ad on Aug 3, 2023 [–]

Only type-I superconductors expel significant magnetic fields. Virtually everything you see on YouTube is a type-II superconductor. type-I superconductors require liquid helium.

Also, only type-II superconductors can hover in a stable configuration near magnets. Flux pinning is required for that.

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