The National Institute of Standards and Technology (NIST) has dramatically enhanced the precision of time measurement with ...

Abstract: The Dick effect can be a limitation of the achievable frequency stability of a passive atomic frequency standard when the ancillary frequency source is only periodically sampled. Here, we ...

By using paired, offset optical combs and RF electronics, researchers devised a unique atomic-clock architecture.

A new atomic clock at the National Institute of Standards and Technology in Boulder is helping researchers count seconds to ...

Institute of Acoustics, Chinese Academy of Sciences, No. 21 North 4th Ring Road, Haidian District, Beijing 100190, P. R. China ...

A liquid just above room temperature, caesium has a melting point of 28.4 °C. The current definition of a second is based on caesium. The most famous use of caesium is in the atomic clock.

Add a description, image, and links to the atomic-clock topic page so that developers can more easily learn about it.

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 ...

Based on the rising and falling of cesium atoms under a microwave beam, the NIST-F4 atomic clock is so reliable that if it had started to run when dinosaurs existed 100 million years ago it would ...

Abstract: This paper demonstrates a five layers wafer level packaging. This technology has been specially developed for chip scale atomic clock system package. It includes a sealed vapor cell and two ...

This could, in turn, inform the future development of atomic clocks and gravitational wave detectors. "To understand this, I have to tell you a story about atomic clocks and gravitational wave ...