GoKawiil
Tech News
Physicists have demonstrated initial operation of nuclear clocks based on a thorium-229 isotope transition, moving the concept from theory toward a working timekeeping device. These prototypes use a nuclear transition rather than the electron transitions employed by today's atomic clocks.
Researchers at the National University of Singapore have built an optical atomic clock using lutetium ions that is four times more precise than the previous record-holder, a calcium-ion clock. The device would lose less than a second over roughly 260 billion years, making it the most accurate timekeeper reported to date, according to a study published in Nature on September 23.
Scientists linked ultra-precise optical atomic clocks located in four different nations and successfully compared their timekeeping with extremely high accuracy. The experiment demonstrated that these clocks, which are far more precise than the cesium clocks defining current international time standards, can be reliably synced across long distances.