A new atomic clock is one of the world’s best timekeepers, researchers say — and after years of development, the “fountain”-style clock is now in use helping keep official U.S. time. Known ...

At the heart of this change is a new kind of atomic clock that uses light instead of microwaves. This shift means timekeeping could become 1,000 times more accurate than today's standards.

The size of this setup makes the optical atomic clock impractical for widespread use in applications like smartphones, ...

A new study published in Nature Physicsreveals a significant breakthrough in quantum timekeeping, challenging a long-held assumption about the link between energy consumption and clock accuracy.

That's why atomic physicists at NASA want to build a more precise, more autonomous atomic clock. Sponsor Message. The team hopes a prototype will be ready by late 2025. Related reading: ...

NIST scientists have published results establishing a new atomic clock, NIST-F4, as one of the world’s most accurate timekeepers, priming the clock to be recognized as a primary frequency ...

From space, the Atomic Clock Ensemble in Space will link to some of the most accurate clocks on Earth to create a synchronized network, which will support tests of fundamental physics.

At this stage the nuclear clock is no faster than the atomic clocks it might one day replace, but the team says this was more a proof of concept study. “With this first prototype, ...

If an atomic clock fell out of sync with a nuclear clock, for example, some change in the underlying physics might be responsible. Only time will tell. Curious about the world?

Atomic clock goes nuclear As a laser shines into a jet of gas, it generates ultraviolet light. It’s the basis of the future nuclear clock that will accurately measure the energy needed to excite ...

Atomic scientists moved their "Doomsday Clock" closer to midnight than ever before, citing Russian nuclear threats amid its invasion of Ukraine and other factors underlying the risks of global ...

The Clock’s time changed most recently in January 2023, when the Doomsday Clock was set at 90 seconds to midnight. Daniel Holz, PhD, SASB Chair, Bulletin of the Atomic Scientists, and professor at the ...