Clocks on Earth are ticking a bit more regularly thanks to NIST-F4, a new atomic clock at the National Institute of Standards and Technology (NIST) campus in Boulder, Colorado. NIST-F4 measures an ...

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, ...

Researchers at the U.S. National Institute of Standards & Technology (NIST) say they have created the most accurate atomic clock to date — one that can measure time down to the 19th decimal place.

Here, time ticks precisely. Home to the National Institute of Standards and Technology (NIST), this is a place where scientists research time, from developing atomic clocks to investigating more ...

NIST scientists Greg Hoth (left) and Vladislav Gerginov work on NIST-F4, NIST’s new cesium fountain clock. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted ...

This temporal lag is a direct consequence of Albert Einstein’s Theory of General Relativity. The rule is simple: the weaker ...

Einstein explained that gravity affects each passing second. Clocks slow down where gravity grows stronger. Clocks speed up ...