Summary

A tiny magnet that levitates within a superconductor trap may be the fastest spinning object visible to the naked eye, and one of the fastest spinning objects ever made. In the future, it could be used in experiments searching for mysterious dark matter particles and aid the development of quantum technologies. Superconductors are materials that conduct electricity with perfect efficiency, and they also expel any magnetic field that tries to permeate them – a phenomenon known as the Meissner effect.

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