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

Inside the National Institute of Standards and Technology, or NIST, a new atomic clock named NIST-F4 has begun to tick — not ...

The way time is measured is on the edge of a historic upgrade. At the heart of this change is a new kind of atomic clock that ...

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 ...

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 ...

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 ...

NIST scientists have published results establishing a new atomic clock, NIST-F4, as one of the world’s most accurate ...

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 ...

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 ...

A network of Earth's best clocks will be synchronised with the most accurate one ever sent into space. But the device has a short shelf life: it will burn up in the atmosphere at the end of the decade ...

The package includes two extremely accurate atomic clocks – a caesium fountain clock and a hydrogen maser clock – both of which use the vibration frequency of atoms as a kind of 'pendulum' to ...