News tagged with atomic clock

GPS getting an upgrade - for $8 billion

(PhysOrg.com) -- GPS is getting an upgrade costing $8 billion (US), which aims to increase the system's accuracy, improve its reliability, and make the technology even more widespread.

May 25, 2010 report
4.6 / 5 (16) 15 | with audio podcast

Optical atomic clock becomes portable

You imagine a clock to be different -- yet the optical table with its many complicated set-ups really is one. Optical clocks like the strontium clock in the Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig ...

Sep 03, 2009
4.8 / 5 (6) 2

Portable Precision: A New Type of Atomic Clock

The most accurate atomic clocks in the world are based on the output of cesium atoms. These ultra-precise fountain clocks measure the frequency and time interval of seconds by using a fountain-like movement of cesium atoms. ...

Jun 11, 2009
3.2 / 5 (9) 2

New Research Promises Better Atomic Clocks

(PhysOrg.com) -- The most accurate timekeepers in the world are atomic clocks, which tell time based on the absorption of a very specific and unchanging microwave frequency, which induces electrons in an atom to “jump” ...

Apr 22, 2009 feature
4.7 / 5 (10) 1