The world’s first nuclear clock can detect changes in nature’s fundamental constants

The world’s first nuclear clock can detect changes in nature’s fundamental constants

Scientists have taken another giant step towards building the most precise clock ever imagined—one that could display not only the passage of time, but shifting rules of nature itself. An international collaboration involving TU Wien, EPFL, the University of Colorado, and the University of Delaware has achieved the most accurate measurement yet of thorium-229’s behavior. Their work reveals how this isotope responds to changes in one of the unive…