Researchers from six countries conducted the largest coordinated comparison of optical clocks to date. The measurements amount to the largest coordinated comparison of optical clocks to date, and ...

Time has always been defined by the vibrations of cesium atoms. But as the limits of precision are pushed further by modern physics, scientists are now preparing to rewrite the rules. Last month, a ...

WASHINGTON — In a new study, researchers carried out the most extensive coordinated comparison of optical clocks to date by operating clocks and the links connecting them simultaneously across six ...

Smartphone displaying updated time with multiple clocks in the background after daylight saving time adjustment. This Sunday, clocks will roll back one hour starting at 2. a.m., marking the end of ...

Most of us spend our lives within reach of a device that provides a clock, stopwatch, and a timer – you’re almost certainly reading this article on such a device – but there are fewer options if you ...