In an optical atomic clock, atoms are irradiated with laser light. If the laser has exactly the right frequency, the atoms change their quantum mechanical state. All external influences on the atoms ...

Scientists developed a highly accurate optical ion clock, improving time measurement precision by 1,000 times.

The next generation of atomic clocks "ticks" with the frequency of a laser. This is about 100,000 times faster than the ...

A standard atomic clock takes a beam of atoms that ... will be more precise than the same ruler with 4 marks. While a cesium clock may be off one second in 100 million years, the optical clocks ...

A team of Chinese researchers has reportedly developed the most precise portable atomic clock ever. Small and rigid by design, this new timepiece can be easily transported to war zones, making it ...

Maybe that’s even more than half of the fun. [CuriousMarc] got an HP 5061A Cesium clock, a somewhat famous instrument as the model that attempted to prove the theory of relativity. The reason?

The invention – called the optical lattice clock – is a thousand times more accurate than cesium atomic clocks used for international timekeeping and is a contender for redefining how long a ...

Experience the future of timekeeping with the latest atomic clock technology. Discover how these clocks outperform ...

Standing 1.5 metres (4.9 feet) tall and roughly the size of a single-door refrigerator, the caesium atomic fountain clock can be loaded onto a military truck and, after enduring long-distance ...

A feedback loop is also used to stabilize the 578-nm laser frequency to the clock transition. Absolute frequency measurements are carried out relative to a local caesium-fountain primary frequency ...