When do the clocks fall back and we gain an extra hour of sleep? Here's when daylight saving time 2025 ends and the time changes.

The world’s best clocks may be sensitive to an odd mix of quantum and relativistic effects that would stretch time and test ...

A team led by Berkeley and GWU working with the U of A's Center for Manipulation of Atomic Ordering for Manufacturing Semiconductors confirmed that atoms in semiconductors arrange themselves in ...

Extending the New START nuclear arms control treaty by a year, even informally, would be a security and diplomatic win for ...

Abstract: We present a recent progress regarding an experimental system for loading Sr atoms into hollow-core fiber (HCF) for continuous operation of optical clocks.

If you have Date & Time turned to “Set Automatically,’' which is how your device arrives from the store, Apple devices and alarms will automatically adjust and wake us at the new current time, ...