Multi-Band Atomic Timekeeping, Tough Solar Power, Shock Resistant 200M Water Resistant, Full Auto EL Backlight with Afterglow, World Time 4 Daily alarms and 1 Snooze Alarm, Hourly time signal ...

Even your Macbook or smartphone displays time which is synchronized to the NIST-F1 clock, a cesium fountain atomic clock (aka ... my various other clocks and watches that I tinker with.

ESA's Atomic Clock Ensemble in Space (ACES ... of ESA's Columbus module on the International Space Station, measuring time from orbit with unprecedented precision. Earlier this month, ACES ...

And these days, it may be that atomic clocks are the only clocks ... By nature, pocket watches spent much of their time in one of two positions: either stored upright in a waistcoat pocket ...

These atomic clocks will replace the current reliance on GPS-sourced data to ensure devices such as digital watches, smartphones, and laptops display time derived directly from the atomic clocks.