30 Apr '12, 7pm

Superaccurate Atomic Clocks Could Be Linked: Scientists in Germany have created a link stable enough to sync nex...

Superaccurate Atomic Clocks Could Be Linked: Scientists in Germany have created a link stable enough to sync nex...

Image: Max-Planck-Institute of Quantum Optics Speed of Light: A laser-generated frequency sent between Max Planck Institute of Quantum Optics (MPQ) and the Physikalisch-Technische Bundesanstalt (PTB) could sync two optical clocks. Click on image to enlarge. 30 April 2012—Scientists have taken a major step toward creating a worldwide network of the most accurate atomic clocks. In results published last week in Science , Katharina Predehl and her team in Germany demonstrated that it’s possible to connect two so-called optical atomic clocks over a distance of 600 kilometers using 920 kilometers of optical fiber. An atomic clock is useful on its own, because it keeps an ultraprecise rhythm. But for GPS, cellular networks, and other important technologies, it needs to be synced with other, distant atomic clocks. The most common type of timekeeper, the microwave atomic clock, is...

Full article: http://spectrum.ieee.org/telecom/internet/superaccurate-a...

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#TSMC clocks Cortex-A9 test chip at 3.1GHz.

newelectronics.co.uk 03 May '12, 11am

"At 3.1GHz, this implementation is twice as fast as its counterpart at TSMC 40nm under the same operating conditions," sai...