“The optical clock community is strongly motivated to obtain the best possible set of measurements before the SI second is ...

More accurate strontium-based atomic clocks are possible – and accurate to one second every 40 billion years – by emitting radiation in the visible, rather than microwave, spectrum.

For decades, the world has kept time with the ticks of atomic clocks. But they could soon be a thing of the past, thanks to the introduction of a nuclear clock that could revolutionise how we ...

Many modern atomic clocks use oscillations of strontium atoms rather than cesium to measure time; the most precise of these is accurate to within 1/15,000,000,000 of a second. This means that ...

For more about Holly's Optical Atomic Strontium Ion Clock, check out the OASIC project on NASA's website.- For more about the Longitude Problem, check out Dava Sobel's book, Longitude.

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 ...

Scientists working with an early version of the cesium atomic clock in 1959. Leap seconds have been used to keep atomic time and astronomical time in sync. Photograph by NIST, The New York Times/Redux ...

Atomic clocks have served as the world’s most precise means of measuring time for over 70 years, but their reign may be finally coming to an end. According to an announcement from the National ...

It’s the creation of Alexander Aeppli, a graduate student researcher at the University of Colorado Boulder. For years, Aeppli has been tweaking to perfection an atomic clock that relies on ...

Ekkehard Peik, one of the field’s pioneers, says such a clock could be a factor of 1,000 times better than today’s standard atomic clocks. In atomic clocks, the electrons around an atom’s ...

Tick tock: Vector Atomic’s Evergreen optical clock in its box. (Courtesy: Vector Atomics) According to Abo-Shaeer, Evergreen’s size and stability pave the way for widespread adoption of such clocks in ...

For decades, the world has kept time with the ticks of atomic clocks. But they could soon be a thing of the past, thanks to the introduction of a nuclear clock that could revolutionise how we ...