2018年7月30日 星期一

NASA makes ultra-cold atoms in space

Researchers from NASA’s Cold Atom Laboratory (CAL) have produced clouds of ultracold atoms called Bose-Einstein condensates (BECs) aboard the International Space Station (ISS), representing the coldest experiments ever conducted in space. BECs, which can reach temperatures just above absolute zero, the point where atoms should theoretically stop moving entirely, have never previously been produced in ...

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