With access to a 10-MHz timebase from a cesium fountain atomic clock — no less a clock than the one that’s used to define the SI second, by the way — [Daniel] looked for ways to sync the ...

The size of this setup makes the optical atomic clock impractical for widespread use in applications like smartphones, satellites, or drones. To solve this challenge, the researchers created tiny ...

In 2001, Japanese physicist Hidetoshi Katori proposed a new type of atomic clock that only loses a second every 30 billion years, a period longer than the current age of the universe. The ...

For decades, the world has kept time with the ticks of atomic clocks. But they could soon be a thing of the past, thanks to the introduction of a nuclear clock that could revolutionise how we ...

The size, power, and other metrics of a latest-generation chip-scale atomic clock. 1. This is the core of the National Institute for Standards and Technology NIST-F1 primary standard atomic clock ...

The Doomsday Clock is a metaphor that represents how close humanity is to self-destruction, due to nuclear weapons and climate change. The clock hands are set by the Bulletin of the Atomic Scientists, ...

Because the nucleus of an atom is less affected by environmental disturbances than its electrons, a nuclear clock could retain accuracy under conditions where atomic clocks would falter ...

Radio waves travel fast, and they can bounce, too. If you are able to operate a 25-meter dish, a transmitter, a solid ...

Optical lattice clocks, the pinnacle of timekeeping, are key to exploring the relationship between quantum mechanics and ...