Quantum clocks break energy limits, unlocking ultra-precise timekeeping with far-reaching tech, AI, and navigation impacts.

ATOM-USD dropped 4% in 24 hours from 3 July 15:00 to 4 July 14:00, falling from $4.22 to $4.06 amid high-volume selling.

Back in 2023, scientists were already puzzled by the Earth’s accelerating rotation, while some speculated that global warming ...

In this work, a rubidium fountain clock through an 84km commercial optical fiber link was used to steer the atomic time scale generated by a clock ensemble with 2 hydrogen masers and 8 high ...