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Latest Atomic clock Stories

2009-12-23 10:14:14

The world's best caesium atomic clocks control Coordinated Universal Time (UTC), an atomic time scale on which the time zones used in everyday life are based. But also in navigation (GPS), astronomy, telecommunications, geodesy and physical fundamental research, accurate timing is of essential importance. Until recently, three of PTB's clocks belonged to the exclusive club of primary caesium atomic clocks. Now a fourth one, the caesium fountain clock CSF2, has joined in. This month, its data...

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2009-12-15 07:36:33

Today at the Paris headquarters of the French space agency (CNES), Simonetta Di Pippo, ESA Director of Human Spaceflight, and Thierry Duquesne, CNES Director for Strategy, Programs and International Relations, signed an agreement that paves the way for the launch of a high-accuracy atomic clock to be attached to the outside of the European Columbus laboratory onboard the International Space Station (ISS). The PHARAO (Projet d'Horloge Atomique par Refroidissement d'Atomes en Orbite) atomic...

2009-12-11 19:14:35

Joint project between PTB and its US counterpart NIST might advance simple and cost effective diagnostical methods The "magnetically best shielded room on earth" has the size of an apartment block and is located on the site of the Physikalisch-Technische Bundesanstalt (PTB), Institute Berlin. Magnetic fields such as that of the earth are kept out here as effective as nowhere else. Such ideal conditions allow to measure the tiny magnetic fields of, e.g., the human heart. This was the...

2009-11-15 19:49:57

Physicists at the National Institute of Standards and Technology (NIST) have demonstrated the first "universal" programmable quantum information processor able to run any program allowed by quantum mechanics"”the rules governing the submicroscopic world"”using two quantum bits (qubits) of information. The processor could be a module in a future quantum computer, which theoretically could solve some important problems that are intractable today. The NIST demonstration, described in...

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2009-10-30 08:53:52

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 (NIST) in the United States have built the first optical frequency comb"”a tool for precisely measuring different frequencies of visible light"”that actually looks like a comb. As described in the Oct. 30 issue of Science,* the "teeth" of the new frequency comb are separated enough that when viewed with a...

2009-10-28 12:43:00

TUALATIN, Ore., Oct. 28 /PRNewswire/ -- As daylight-saving time approaches, consumers nationwide are able to relieve the stress of remembering to change their clocks. Oregon Scientific, a leading maker of consumer electronics, offers a wide variety of self-setting clocks that automatically program themselves to the U.S. Atomic Clock time for official, precise time 24 hours a day, seven days a week, with automatic adjustment for daylight saving. (Photo:...

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2009-09-03 10:43:06

PTB researchers want to construct the "atomic clock of the future" much more simply and more compactly than the previous elaborate laboratory set-ups 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 could be the atomic clocks of the future; some of them though are already ten times more precise and stable than the best primary...

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2009-08-11 16:30:00

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 civilian time standard, scientists at the National Institute of Standards and Technology (NIST) report in Physical Review Letters.*NIST scientists evaluated the clock by measuring the natural frequency of ytterbium, carefully accounting for all possible deviations such as those caused...

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2009-05-21 07:37:27

Researchers have figured out how to nullify collision effects and make the clock still more precise To accurately measure tiny intervals of time, you need a clock that ticks very fast and very precisely. For the ultimate in accuracy, scientists reach for atoms, or more precisely, an exactly known frequency of light emitted by a chosen atom. The 'ticks' are the crests of a light wave, which rises and falls as many as a thousand trillion times per second. In an effort to improve the already...

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2009-04-17 08:18:54

A clock that is so precise that it loses only a second every 300 million years "“ this is the result of new research in ultra cold atoms. The international collaboration is comprised of researchers from the University of Colorado, USA and the Niels Bohr Institute at the University of Copenhagen and the results have just been published in the prestigious scientific journal, Science. An atomic clock consists of gas atoms captured in a magnetic field where they are held stationary with...


Word of the Day
glogg
  • Scandinavian punch made of claret and aquavit with spices and raisins and orange peel and sugar.
This word comes from the Swedish 'glogg,' which is an alteration of 'glodgat,' mulled (wine).
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