Get the latest tech news
NIST ion clock sets new record for most accurate clock
This new result contributes to the international effort to define the second with a much greater level of accuracy than before, enabling new scientific and technological advances
(From left to right) Mason Marshall, David Hume, Willa Arthur-Dworschack and Daniel Rodriguez Castillo stand in front of the aluminum ion clock at NIST. Using fiber links under the street, Ye’s group at JILA sent the ultrastable laser beam 3.6 kilometers (a little more than 2 miles) to the frequency comb in the lab of Tara Fortier at NIST. More importantly, by cutting down the averaging time from weeks to days, this clock can be a tool to make new measurements of Earth’s geodesy and explore physics beyond the Standard Model, such as the possibility that the fundamental constants of nature are not fixed values but actually changing.
Or read this on Hacker News
