We normally think of atomic clocks as the gold standard in ... the two hyperfine levels of the ground state of a stationary cesium-133 atom at a temperature of 0K. But there is a move to replace ...

The atomic clock payload to be installed on the ISS's Columbus module, aims to push the boundaries of precision timekeeping ...

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 ...

“Because visible light has a frequency that is five orders of magnitude higher than microwaves, optical clocks are about 100 times more accurate than the current standard of caesium atomic ...

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 ...

Modern timekeeping relies on the accuracy of atomic clocks, which revolutionized timekeeping by using the quantum behavior of atoms to measure time. Discover how these incredibly precise clocks ...

A master time-of-day clock that computer and satellite networks are synchronized with worldwide. An atomic clock is known ... transition to a new level in cesium atoms. See real-time clock and ...

Symmetricom has squeezed an atomic clock into 17cm3. Called the SA.45s, the cesium atom-based device is 40x35x12mm and weighs 35g. Over the -10 to 70°C operating temperature range, frequency change is ...