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.

There's a new record holder for the most accurate clock in the world. Researchers at the National Institute of Standards and Technology (NIST) have improved their atomic clock based on a trapped ...

A set of atomic clocks linked together using the principles of quantum physics could be the authoritative world clock — more accurate and stable than any atomic clock today. Mikhail Lukin of Harvard ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. World'o'Clock is a Windows Phone app that could come in handy if you have to deal with global ...