51动漫
Explore the most exciting new ideas and emerging concepts in science, health, technology and the environment with 51动漫鈥檚 exclusive in-depth articles, interviews and long reads.
Physics
First working nuclear clock heralds a new era in timekeeping
A clock based on radioactive thorium atoms realises a long-held ambition, demonstrating a technology that could eventually beat the accuracy of today鈥檚 best atomic clocks
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