A new generation of optical atomic clocks, some accurate enough to lose less than a second over the entire age of the universe, is driving an international push to replace the cesium-based definition ...
Most clocks, from wristwatches to the systems that run GPS and the internet, work by tracking regular, repeating motions. To ...
Chinese scientists have engineered a clock so accurate it could lead to a redefinition of the second and an ultraprecise global time standard. The new optical clock is so accurate that it loses or ...
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