In a new study, researchers carried out the most extensive coordinated comparison of optical clocks to date by operating ...

Every clock in your house probably tells a slightly different time. Now picture those clocks as the most precise instruments humanity has ever built, so accurate that they wouldn't lose or gain a ...

While some are enhancements to original atomic-clock architectures based on controlling ... in the 171Yb+ isotope of the rare-earth ytterbium (Fig. 3). Their dual-comb system can potentially ...

Scientists have taken a major step toward the ambitious global goal of “redefining the second” by the end of this decade. A ...

The European Space Agency’s ACES mission could ultimately pave the way for a global network of atomic clocks that make these measurements far more accurate. In 2003, engineers from Germany and ...

That clock, called the Atomic Clock Ensemble in Space, or ACES, launched into orbit from Florida last month, bound for the International Space Station. ACES, which was built by the European Space ...

The time we now use around the world is called Universal time, or UT. It was formalized a century ago — here's how it works.

Adtran today launched the latest additions to its Oscilloquartz optical cesium portfolio, expanding access to precision timing across a wider range of network environments. The new OSA 3200 SP and ...