The US National Institute of Standards and Technology (NIST) broadcasts atomic clock time signals from Fort Collins, Colorado on various frequencies. The WWVB signal on 60 kHz blasts out 70,000 ...

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 ...

It discusses the stability and accuracy of atomic frequency standards, including different types of oscillators and atomic clocks, covering recent developments and uses of these devices. The precision ...

But it is the mercury-ion atomic clock, developed at Nasa's Jet Propulsion Laboratory (JPL), which has had most attention. Today, deep-space probes are tracked across the Solar System via radio ...

In a breakthrough, scientists have mapped the invisible ripples in spacetime caused by massive objects like black holes.

But the River Thames is perhaps the choice for the most special deliveries - including an optical atomic clock. A flotilla of 15 boats, led by royal barge Jubilant, has carried the extremely ...