Quantcast
Last updated on April 19, 2014 at 21:20 EDT

Latest Atomic clock Stories

2011-09-07 08:00:00

SAN JOSE, Calif., Sept. 7, 2011 /PRNewswire/ -- Symmetricom®, Inc. (NASDAQ:SYMM), a worldwide leader in precision time and frequency technologies and a provider of timing infrastructure for the power segment, announced today the availability of its updated XLi Time and Frequency System, which the company enhanced in support of the North American Electric Reliability Corporation (NERC) Time Error Correction Field Trial. Power utilities participating in the trial can...

tech-082611-005a
2011-08-26 12:27:20

  Researchers have found that an atomic clock at the U.K.'s National Physical Laboratory (NPL) has the best long-term accuracy of any other clock in the world. Studies of the clock's accuracy show it is nearly twice as accurate as previously thought. The clock would lose or gain less than a second in about 138 million years. The NPL's CsF2 clock is a "caesium foundation" atomic clock, in which the "ticking" is provided by the measurement of the energy required to change a...

2011-06-28 12:39:44

By combining advanced laser technologies in a new way, physicists at the National Institute of Standards and Technology (NIST) have generated microwave signals that are more pure and stable than those from conventional electronic sources. The apparatus could improve signal stability and resolution in radar, communications and navigation systems, and certain types of atomic clocks. Described in Nature Photonics,* NIST's low-noise apparatus is a new application of optical frequency combs, tools...

70f383b4b0ee5b75afe46fcae736b1e2
2011-05-12 14:46:28

In a step toward taking the most advanced atomic clocks on the road, physicists at the National Institute of Standards and Technology (NIST) have designed and demonstrated a super-stable laser operating in a cramped, vibrating location"”a minivan. The experiment shows how advanced lasers can be made both stable and transportable enough for field use in geodesy, hydrology, improved radar and space-based tests of fundamental physics. The drive tests, limited to a short excursion of five...

2011-05-12 00:20:48

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. Although small, the correction could represent a big step towards atomic timekeepers' longstanding goal of a clock with a precision equivalent to one second of error every 32 billion years"”longer than the age of the universe. Precision timekeeping is one of the bedrock...

e588d61ec4f7d4e085778e4532ea617d
2011-05-04 08:15:19

Sandia researchers develop tiny laser that reduced power consumption 1,000-fold 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. The portable Chip Scale Atomic Clock (CSAC) "” only about 1.5 inches on a side and less than a half-inch in depth "” also requires 100 times less power than its predecessors. Instead of 10 watts, it uses only...

fb7558344c6a37c9d5293ee5f439f5e5
2011-02-04 08:20:46

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. 3 issue of Science Express, can boost the performance of experimental atomic clocks made of thousands or tens of thousands of neutral atoms trapped by intersecting laser beams. JILA is jointly operated by the National Institute of Standards and Technology (NIST) and the University of...

2011-01-24 07:00:00

SAN JOSE, Calif., Jan. 24, 2011 /PRNewswire/ -- Oclaro, Inc.( )(Nasdaq: OCLR), a tier-one provider of innovative optical communications and laser solutions, today announced that it has developed single-mode Vertical Cavity Surface Emitting Lasers (VCSEL) for atomic clocks and these lasers are being used by Symmetricom, a world leader in the design and manufacturing of frequency standards, in its SA.35m miniaturized rubidium atomic clock. Featuring ultra-high stability, low noise and a...

2010-10-14 15:09:59

Researchers from the National Institute of Standards and Technology (NIST) and the German national metrology institute have used NIST's miniature atom-based magnetic sensor to successfully track a human heartbeat, confirming the device's potential for biomedical applications. Described in Applied Physics Letters,* the study is the first to be performed under conditions resembling a clinical setting with the NIST mini-sensors, which until now have been operated mostly in physics laboratories....

36556d232ad50279bf28f24714e5367f1
2010-09-25 06:15:00

Scientists said Friday they have found that climbing stairs or a mountain really can age you faster than going for a quick trip in your car. The study proves Einstein's theory of relativity -- which states that time flies at high altitude, but slows down when people speed up. Experiments in the past proved the basic premise of Albert Einstein's theory, sending an atomic clock into space on a rocket and comparing it to one kept behind on Earth, where gravity acts to slow the passage of time....