Scientists propose a new atomic clock experiment that could reveal whether time itself follows the strange rules of quantum ...

Time might be even stranger than Einstein imagined. Physicists are now exploring the possibility that a single clock could ...

The most precise clocks ever built can now detect gravity’s warping of time across a distance shorter than a pencil tip. That achievement, remarkable on its own, has physicists asking a deeper ...

To find out how clock accuracy is verified and which reference is used for comparison, we visited the Belarusian State Institute of Metrology (BelGIM), where most of the national standards are kept.

Most clocks, from wristwatches to the systems that run GPS and the internet, work by tracking regular, repeating motions. To build a clock, you need something that ticks in a perfectly repeatable way.

Time is almost up on the way we track each second of the day, with optical atomic clocks set to redefine the way the world measures one second in the near future. Researchers from Adelaide University ...

The "Doomsday Clock" was set to 85 seconds to midnight on Jan. 27 — marking the closest it has been to the time that represents apocalypse in its history. “The Doomsday Clock’s message cannot be ...

Smaller version Illustration of a conventional atomic fountain clock (left) next to NPL’s miniature atomic fountain clock. (Courtesy: NPL) A miniature version of an atomic fountain clock has been ...