https://www.live-feeds.com/feed/in-vienna-and-beijing-the-first-nuclear-clocks-begin-to-tickContinuously updated, source-cited coverage. https://www.live-feeds.com/feed/in-vienna-and-beijing-the-first-nuclear-clocks-begin-to-tickhttps://www.live-feeds.com/feed/in-vienna-and-beijing-the-first-nuclear-clocks-begin-to-tick#u128351Sat, 17 Oct 2026 15:40:32 +0000Two independent research teams in Vienna and Beijing have built and operated the world's first functioning nuclear clocks using the thorium-229 radioisotope. The devices utilize lasers to drive energy-level transitions within atomic nuclei rather than observing orbiting electrons like conventional atomic clocks. Published simultaneously in the journal Nature, one of the new clocks ran untouched for more than a day, marking a major milestone in precision timekeeping and metrology. The technology could eventually lead to highly portable, ultra-precise timekeepers that surpass traditional at