The way time is measured is on the edge of a historic upgrade. At the heart of this change is a new kind of atomic clock that uses light instead of microwaves. This shift means timekeeping could ...

Chinese breakthrough in ultraviolet crystals could lead to navigation systems resistant to jamming ...

Quantum timekeeping has reached a new threshold, with trapped-ion clocks now accurate to the 19th decimal place and a separate line of theoretical work suggesting that time crystals, exotic quantum ...

The next generation of atomic clocks "ticks" at the frequency of a laser. That is around 100,000 times faster than the microwave frequencies of the caesium clocks that currently generate the second.

World-first crystal tunes laser light to power ultra-precise, compact nuclear clocks which could guide submarines and deep-space probes.

There are moments in scientific history when an idea once deemed abstract suddenly gains substance, and in that transition lies a shift so profound that it reshapes both understanding and possibility.