ScienceTechRadarabout 2 hours ago
Singapore beats China to most accurate clock
4 min read
Singapore's CQT team published research in Nature showing two lutetium-ion clocks with uncertainties of 1.2 and 1.3 × 10⁻¹⁹. This beats the previous record of 4.4 × 10⁻¹⁹ set by Wuhan's calcium clock in February 2026. The breakthrough occurred days before the CGPM meets in Versailles in October 2026 to decide on replacing cesium.
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