// NATURE NEWS — SPAZIO & SCIENZA
Super-precise optical clocks in four nations tick in harmony
Optical clocks, such as this strontium clock, are helping metrologists to redefine the second. Credit: Andrew Brookes, National Physical Laboratory/Science Photo Library
A new way to define the second could be closer than ever, thanks to a comparison of the accuracy of seven cutting-edge clocks in four countries1.
Access Nature and 54 other Nature Portfolio journals
Get Nature+, our best-value online-access subscription
Prices may be subject to local taxes which are calculated during checkout
Pizzocaro, M. et al. Phys. Rev. Res. 8, 033250 (2026).
Computational ‘gym’ trains AI models to control turbulence
Mathematics holds the secret to ‘ladder-proof’ knitting
Degree-of-polarization modulation for high-dimensional optical computing
Dobson Professorship of Materials Science and Metallurgy The Board of Electors to the Dobson Professorship of Materials Science and Metallurgy invi...