Latest Kilogram Stories

2011-03-02 20:07:10

A reliable and trustworthy system of weights and measures is vital for economic activity. Maintaining that system requires constant vigilance, and that's where the National Institute of Standards and Technology (NIST) Weights and Measures Division (WMD) comes in. While the division routinely hosts meetings and online classes to help state regulators enforce compliance, NIST is now making an effort to reach out to industry and retailers so that they can proactively identify and address...

2011-02-10 07:49:08

Avogadro constant determined with enriched silicon-28 A milestone in the international Avogadro project coordinated by the Physikalisch-Technische Bundesanstalt (PTB) has been reached: With the aid of a single crystal of highly enriched 28Si, the Avogadro constant has now been measured as exactly as never before with a relative overall uncertainty of 3 "¢ 10-8. Within the scope of the redefinition of the kilogram, the value NA = 6.02214078(18) "¢ 1023 mol-1 permits the currently...

2011-01-24 09:35:00

Scientists are close to establishing a non-physical definition of the kilogram--the last remaining base unit in the International System of Units (SI) still defined by an existing object--after it was revealed that the prototype used to establish the measurement is shrinking. That prototype, which is a cylinder of platinum-iridium housed at the International Bureau of Measurements (BIPM) in France, has gotten approximately 50 micrograms (0.0000017 ounces) smaller over the past 100 or so...

2010-11-03 15:18:00

VANCOUVER, Nov. 3 /PRNewswire/ - Callinan Mines has commenced exploration activity on the recently optioned Gossan claims, located near the community of Cranberry Portage, Mb.  The work program will consist of approximately ten diamond drill holes, totaling approximately 3,000 meters. Targets will include known gold bearing structures identified in government assessment reports. The program has been designed with holes at 25 meter intervals. "This program is an effort to...

2010-11-03 00:00:41

The chemicals industry contributed S$59 (US$48) billion to Singapore's economy in 2009, and Singapore is establishing itself as a global chemical and biomedical hub. A*STAR's National Metrology Centre and the Health Sciences Authority have jointly set up a national metrology in chemistry infrastructure to ensure that chemical and biological measurements performed in Singapore are accurate, traceable and internationally accepted for chemicals, food, pharmaceutical, medical and healthcare...

2010-10-27 12:37:27

Taking the first steps of what would be a major historical advance in the science of measurement, the National Institute of Standards and Technology (NIST) is participating in a worldwide effort to recommend major revisions to the International System of Units (SI), the modern metric system that is the basis of global measurements in commerce, science and other aspects of everyday life. The new SI, which would be based on seven constants of nature, would enable researchers around the world to...

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....

2010-09-01 20:55:08

A new experiment proposed by physicists at the National Institute of Standards and Technology (NIST) may allow researchers to test the effects of gravity with unprecedented precision at very short distances"”a scale at which exotic new details of gravity's behavior may be detectable.Of the four fundamental forces that govern interactions in the universe, gravity may be the most familiar, but ironically it is the least understood by physicists. While gravity's influence is...

2010-06-28 07:40:00

The National Institute of Standards and Technology (NIST) has issued two publications calling for the amendment of labeling laws to allow the voluntary use of only metric units on some consumer products. NIST researchers suggest that adoption of metric labeling will lead to greater agreement between state and federal labeling laws and simplify domestic and international commerce. The Fair Packaging and Labeling Act (FPLA) specifies the type of information that must appear on a consumer...

2010-02-05 13:22:06

Clock keeps time to 1 second in 3.7 billion years Physicists at the National Institute of Standards and Technology (NIST) have built an enhanced version of an experimental atomic clock based on a single aluminum atom that is now the world's most precise clock, more than twice as precise as the previous pacesetter based on a mercury atom. The new aluminum clock would neither gain nor lose one second in about 3.7 billion years, according to measurements to be reported in Physical Review...

Word of the Day
  • Exultant; jubilant; triumphant; on the high horse.
  • Tipsy; slightly intoxicated.
This word may come from the phrase 'to set cock on hoop,' or 'to drink festively.' Its origin otherwise is unclear. A theory, according to the Word Detective, is that it's a 'transliteration of the French phrase 'coq a huppe,' meaning a rooster displaying its crest ('huppe') in a pose of proud defiance.' Therefore, 'cock-a-hoop' would 'liken a drunken man to a boastful and aggressive rooster.'