What is the term for a material that has zero electrical resistance when cooled to extremely low temperatures?
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Superconductors can carry an electric current indefinitely without losing any energy as heat, but they currently require temperatures near absolute zero to work. They also exhibit the Meissner effect, which causes them to expel magnetic fields and float above magnets. This technology is crucial for MRI machines and maglev trains. Photo: Henry Mühlpfordt, Wikimedia Commons, CC BY-SA 3.0.
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Source: Wikipedia (CC BY-SA)
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