Iran officially suspended its cooperation with the UN nuclear watchdog on Wednesday, a move the United States described as ...

Iran’s president has reportedly ordered the country to suspend its cooperation with the International Atomic Energy Agency ...

Iran is assessing the damage and lashing out over the American and Israeli airstrikes that damaged its nuclear sites.

(THE CONVERSATION) When U.S. forces attacked Iran’s nuclear facilities on June 21, 2025, the main target was metal tubes in laboratories deep underground. The tubes are centrifuges that produce highly ...

Nostalgia lovers can rejoice as a new retro-themed restaurant has opened up in Stadium Park Plaza in Bowling Green, with its ...

Abstract: The frequency stability of an atomic fountain clock was significantly improved by employing an ultra-stable local oscillator and increasing the number of atoms detected after the Ramsey ...

BOULDER, Colo. — A new cesium fountain atomic clock at the National Institute of Standards and Technology (NIST) in Boulder is making time more accurate by fractions of a second. It took a team of ...

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 ...

The agency’s first fountain clock, NIST-F1, began ticking in the late 1990s and served for over 15 years. But in 2016, after a move to a new building, it faltered.

According to scientists at NIST in Boulder, their newest atomic clock, the NIST-F4, will help track time more precisely and help put global time on a more accurate frequency.

NIST-F4 is a cesium fountain clock, which is considered the cream of the crop — there are fewer than 20 of its kind operating in the entire world. Fountain clocks are not constantly running like ...

The clock is based on a "fountain" design that represents the gold standard of accuracy in timekeeping. NIST-F4 ticks at such a steady rate that if it had started running 100 million years ago, when ...