Chinaโs thorium-229 nuclear clock beats Viennaโs on stability, studies show
Initial results from the worldโs first two working nuclear clocks indicate that Chinaโs timepiece is about six times as stable as the one in Vienna, according to papers published this week by the journal Nature. The clocks were developed independently but both the Chinese team, led by Tsinghua University in Beijing, and the researchers at Viennaโs TU Wien used thorium-229 nuclei embedded in crystals to keep time by the steady rhythm of the atomโs core, rather than the electrons whirling around...