Every second of modern life runs on precision — from GPS navigation to the time signals that keep the internet in sync. But scientists at MIT and Harvard have just taken precision to an entirely new ...

MIT researchers double the accuracy of optical atomic clocks by reducing quantum noise with an innovative laser technique.

Find out how to keep time online accurately using World Clock, Time.now, Google Clock, and more. Learn how web-based time ...

The US Air Force is turning to atomic clock technology to help coordinate swarms of small drones in environments where traditional satellite navigation is jammed or spoofed, according to a new request ...

Physicists have demonstrated all the ingredients of a nuclear clock — a device that keeps time by measuring tiny energy shifts inside an atomic nucleus. Such clocks could lead to vast improvements in ...

The nucleus of an atom is now the modern version of sand flowing through an hourglass. Researchers have spent 15 years trying to increase accuracy in timekeeping. The U.S. standard currently relies on ...

A new atomic clock is one of the world’s best timekeepers, researchers say — and after years of development, the “fountain”-style clock is now in use helping keep official U.S. time. Known as NIST-F4, ...

The satellites that make the GPS in your car and smartphone work consist of many atomic clocks. About 400 such atomic clocks ...

FOR THE discerning timekeeper, only an atomic clock will do. Whereas the best quartz timepieces will lose a millisecond every six weeks, an atomic clock might not lose a thousandth of one in a decade.