Question: How can superfluidity be useful?

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  1. Good question. Superconductivity is a form of superfluidity – and that is potentially useful as it means we could transfer electricity more efficiently over long distances if scientists can make it happen at everyday temperatures (we’ve got from -240 C to -110 C in the last 25 years). People have also talked about building magnetic levitating trains using superconductors:

    As for the superfluidity of ultra-cold atoms : it is potentially useful in making very high precision “inertial sensors” that can detect acceleration and rotation – so could be used for navigation in places where GPS isn’t available (such as for submarines). But that is still a little way off in to the future.