“An atomic clock on the moon will tick at a different ... The last time NASA sent astronauts to the moon they wore watches, but timing wasn’t as precise and critical as it now with GPS ...

And these days, it may be that atomic clocks are the only clocks that matter ... solid weight. So pocket watches weren’t exactly an overnight success. Early pieces were largely ornamental ...

Atomic clocks are so accurate that they have an error rate of approximately 1 second in up to 100 million years.

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 ...

Nasa has put a miniaturised atomic clock in orbit that it believes can revolutionise deep-space navigation. About the size of a toaster, the device is said to have 50 times the stability of ...