ESA's Atomic Clock Ensemble in Space (ACES) has arrived at NASA's Kennedy Space Center in Florida, United States. This cutting-edge European experiment will test fundamental physics from the ...

A technological innovation could revolutionize the precision of navigation systems. A tiny device, shaped like a comb, promises to deliver unparalleled accuracy in the field ...

A revolutionary timekeeping breakthrough could be on the horizon as scientists explore the thorium-229 nuclear optical clock, ...

Atomic clocks are the basis upon which a second is defined. But there is a new kid on the block, the optical clock, which ...

His Rubidium-standard atomic real-time clock is surely an example of hardware ... frequency counters so he went with logic chips. The pictures and a few video annotations are the only clues ...

The size, power, and other metrics of a latest-generation chip-scale atomic clock.

In a National Science Review perspective, the research progress and future challenges of nuclear optical clocks are presented ...

With access to a 10-MHz timebase from a cesium fountain atomic clock — no less a clock than the one that’s used to define the SI second, by the way — [Daniel] looked for ways to sync the ...