The National Institute of Standards and Technology's new cesium fountain clock is one of the most precise atomic clocks ever ...

Clocks on Earth are ticking a bit more regularly thanks to NIST-F4, a new atomic clock at the National Institute of Standards ...

Whether you find yourself glancing at a clock on the wall or checking your phone, the time you constantly see is the product of a meticulous system upheld by the world’s timekeepers. In the U.S., a ...

by measuring the unchanging frequency in the heart of cesium atoms. NIST said that if the F4 atomic clock had started ticking 100 million years ago, when dinosaurs were abundant on Earth ...

On a campus in Boulder, Colorado, time just became a little more exact. Inside the National Institute of Standards and ...

At the heart of this change is a new kind of atomic clock that ... the second based on optical clocks. For now, that still depends on microwave transitions in caesium atoms, but this might change ...

A Special Kind of Clock Cesium fountain clocks such as NIST-F4 are a type of atomic clock — a complex, high-precision device that extracts timing pulses from atoms. These clocks play a critical ...

Cesium fountain clocks such as NIST-F4 are a type of atomic clock – a complex, high-precision device that extracts timing pulses from atoms. These clocks play a critical role in our globally connected ...