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ESA Welcomes Arrival Of Pharao
2014-07-29 03:14:46

ESA has welcomed the arrival of Pharao, an important part of ESA’s atomic clock experiment that will be attached to the International Space Station in 2016.

New U.S. Time Standard Launched By NIST
2014-04-04 13:21:23

The U.S. Department of Commerce's National Institute of Standards and Technology (NIST) has officially launched a new atomic clock, called NIST-F2, to serve as a new U.S. civilian time and frequency standard, along with the current NIST-F1 standard.

JILA Strontium Atomic Clock Unveiled And Sets New Records In Precision, Stability
2014-01-23 09:53:25

Heralding a new age of terrific timekeeping, a research group led by a National Institute of Standards and Technology (NIST) physicist has unveiled an experimental strontium atomic clock that has set new world records for both precision and stability-- key metrics for the performance of a clock.

2013-12-31 23:03:12

AGI and Other Subject Matter Experts Contribute to American Astronautical Society’s “Requirements for UTC and Civil Timekeeping on Earth” Exton, PA (PRWEB)

Connecting Clocks To Measure Height
2013-10-02 11:10:16

Researchers from Garching and Braunschweig transport frequencies with high precision over almost 2000 km - important, among other things, for geodesy

New Stability Record Set By NIST Ytterbium Atomic Clocks
2013-08-22 14:45:09

A pair of experimental atomic clocks based on ytterbium atoms at the National Institute of Standards and Technology (NIST) has set a new record for stability.

Redefining Time With Innovative Optical Lattice Clock
2013-07-10 12:56:58

Atomic clocks are the standard in time, hailed as the most accurate and often used to keep other clocks in time. Now, a new kind of clock aims to not only replace atomic clocks as the most accurate, but redefine the second as a measurement of time as well.

Berkeley Physicist Uses Atomic Matter To Tell Time
2013-01-11 15:06:34

In a groundbreaking new study, physicists from the University of California, Berkeley have used atomic matter to measure time.

Better Accuracy For Optical Strontium Clock
2013-01-03 11:30:03

An optical clock with neutral strontium atoms is considered one of the top candidates for the definition of a "new" second. The probabilities have increased considerably, since its frequency will now be determined more accurately (probably by an order of magnitude).

Atomic Clocks May Survey Earth's Insides
2012-11-12 15:17:48

An international team believes that atomic clocks could already have reached the necessary degree of precision to be useful for geophysical surveying of Earth's interior.


Latest Second Reference Libraries

0_3c981185d3336687e1466aa007bb3157
2009-07-10 12:54:52

Cesium (or Caesium) is a chemical element with the symbol Cs and atomic number 55. Caesium is a soft alkali metal that is silvery-gold. It melts and liquefies at 83 degrees Fahrenheit and is one of only five metals that are liquid close to room temperature. Caesium is a metal that is most widely known for its use in atomic clocks. Cesium comes from the Latin word caesius meaning "˜bluish-gray'. It was discovered in 1860 by Robert Bunsen and Gustav Kirchhoff in Durkheim, Germany in mineral...

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Word of the Day
honeyguide
  • Any of various tropical Old World birds of the family Indicatoridae, some species of which lead people or animals to the nests of wild honeybees. The birds eat the wax and larvae that remain after the nest has been destroyed for its honey.
Honeyguide birds have even been known to eat candles.