Electrons cooled close to absolute zero reveal their quantum nature

Scientists have discovered that electrons cooled close to absolute zero slow down so much that they can be studied individually – allowing us to see the world in a whole new level of detail. At those temperatures, electric current stops flowing. Instead, electrons trickle through a conductor like grains of sand in an hourglass, finally revealing their quantum state and allowing us to study them one at a time. “These extremely low temperatures open up an unexpected richness of detail,” said lead researcher Christian Ast from the Max Planck Institute…

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