Now a Japanese company has commercialized one approach—an optical-lattice clock it claims is the most accurate on the market.

Atomic clocks have long been the gold standard for measuring time and frequency. Among them, optical clocks—using atoms like strontium or aluminum—have reached staggering levels of accuracy, with ...

Atomic Digital Clock Auto Set (no back light) - Using radio frequencies broadcast ... Savings Time while set the DST on. Atomic Wall Clocks Battery Operated with Alarm - This digital calendar ...

They trapped thousands of strontium atoms vertically in grids of laser light. Atomic clocks rely on the steady frequency at ...