The clock hands are set by the Bulletin of the Atomic Scientists, a group formed by Manhattan Project scientists at the University of Chicago who helped build the atomic bomb but protested using it ...

Atomic clocks have long been the gold standard for ... temperatures and organized into crystal-like structures. These isolated systems are much less affected by outside noise and could provide ...

Atomic clocks are the basis upon which a second is defined. But there is a new kid on the block, the optical clock, which ...

Adelaide-based QuantX Labs plans to launch a key subsystem of its optical atomic clock into space to enhance position, ...

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 ...

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 ...

ESA's Atomic Clock Ensemble in Space (ACES) has arrived at NASA's Kennedy Space Center in Florida, United States. This cutting-edge European experiment will test fundamental physics from the ...

Accurate frequency measurements of a narrow optical clock transition in 171 Yb atoms ... in the quest to develop increasingly accurate atomic clocks. The spectral resolution achieved in the ...

Atomic clocks have long been the gold standard for measuring time and frequency. Among them, optical clocks—using atoms like strontium or aluminum—have reached staggering levels of accuracy, with ...