🇨🇳 China
1d ago
Chinese scientists develop nuclear optical clock
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Chinese scientists have developed a nuclear optical clock that uses the nucleus of a thorium-229 atom to keep time, marking a major advance toward a new generation of highly precise clocks.A team led by Ding Shiqian at Tsinghua University used a specially developed continuous-wave ultraviolet laser and a tiny crystal containing thorium-229 to detect and precisely measure a transition inside the atomic nucleus. The team then locked the laser's frequency to this nuclear transition, allowing the sy
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