News tagged with atomic clocks
Related topics: satellite , global positioning system
New calculations on blackbody energy set the stage for clocks with unprecedented accuracy
(PhysOrg.com) -- A team of physicists from the United States and Russia announced today that it has developed a means for computing, with unprecedented accuracy, a tiny, temperature-dependent source of error in atomic clocks. ...
May 09, 2011 |
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World's smallest atomic clock on sale
(PhysOrg.com) -- A matchbook-sized atomic clock 100 times smaller than its commercial predecessors has been created by a team of researchers at Symmetricom Inc. Draper Laboratory and Sandia National Laboratories.
May 02, 2011 |
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Quantum quirk: Scientists pack atoms together to prevent collisions in atomic clock
In a paradox typical of the quantum world, JILA scientists have eliminated collisions between atoms in an atomic clock by packing the atoms closer together. The surprising discovery, described in the Feb. ...
Feb 03, 2011 |
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New method developed for synchronizing clocks
Maintaining the correct time is no longer just a matter of keeping your watch wound -- especially when it comes to computers, telecommunications, and other complex systems. The clocks in these devices must stay accurate to ...
Jul 20, 2010 |
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As good as an atomic clock
Australian researchers have invented a new clock that will bring atomic accuracy to your desk.
Technology / Computer Sciences
Jul 06, 2010 |
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Time is money: SIM time network has far-reaching benefits
Clocks in the Americas and the Caribbean Islands are now ticking in unison thanks to the work of the Sistema Interamericano de Metrologia (SIM), a regional metrology organization that works to promote accurate ...
May 28, 2010 |
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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 |
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Quantum measurement precision approaches Heisenberg limit
(PhysOrg.com) -- In the classical world, scientists can make measurements with a degree of accuracy that is restricted only by technical limitations. At the fundamental level, however, measurement precision ...
Feb 26, 2010 |
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'Quantum Logic Clock' Based on Aluminum Ion is Now World's Most Precise Clock (w/ Video)
(PhysOrg.com) -- Physicists at the National Institute of Standards and Technology have built an enhanced version of an experimental atomic clock based on a single aluminum atom that is now the world’s most ...
Feb 04, 2010 |
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Scientists Build First 'Frequency Comb' To Display Visible 'Teeth'
(PhysOrg.com) -- Finally, an optical frequency comb that visibly lives up to its name. Scientists at the University of Konstanz in Germany and the National Institute of Standards and Technology in the U.S. ...
Oct 29, 2009 |
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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 |
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Ytterbium gains ground in quest for next-generation atomic clocks
An experimental atomic clock based on ytterbium atoms is about four times more accurate than it was several years ago, giving it a precision comparable to that of the NIST-F1 cesium fountain clock, the nation's ...
Aug 11, 2009 |
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Video shows nanotube spins as it grows (w/ Videos)
(PhysOrg.com) -- New video showing the atom-by-atom growth of carbon nanotubes reveals they rotate as they grow, much like the halting motion of a mechanical clock's second hand. Published online this month ...
Nanotechnology / Nanomaterials
Jul 27, 2009 |
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Ytterbium's broken symmetry: The largest parity violations ever measured in an atom
Ytterbium was discovered in 1878, but until it recently became useful in atomic clocks, the soft metal rarely made the news. Now ytterbium has a new claim to scientific fame. Measurements with ytterbium-174, ...
Jul 22, 2009 |
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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 |
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