The National Physical Laboratory (NPL) develops world’s first primary standard for molecular radiotherapy to ensure its safe, effective use in the treatment of cancer. The new standard will help improve the consistency of treatments with […]
A pound is a pound is a pound, right? Luckily, when you buy something in the United States, you can be extremely confident that you are getting the quantity you paid for, whether it’s a […]
From NIST News January 23, 2017 Next year, scientists expect to change the way we define the basic units with which we measure our universe. An article by scientists at the National Institute of Standards […]
Paris, January 3rd 2017. Trescal, the international specialist in calibration services, announces the acquisition of Exphil Calibration Labs Inc., a calibration services provider based in Long Island (New York). The transaction consolidates Trescal’s geographical footprint […]
Admitting that most of the pollution measuring and biomedical equipment are “not calibrated as per standards in the country which affects quality of the measured data”, the Centre has asked pollution watchdogs – CPCB and […]
NIST has recently made substantial improvements to its Johnson-noise thermometry system, which is playing a vital role in the worldwide effort to determine the value of a key physical constant in time for the impending […]
by Hening Huang The Welch-Satterthwaite (WS) formula estimates an “effective degrees of freedom” of an approximate Chi-square distribution formed from a combination of several sample variances of independent normal populations. The effective degrees of freedom […]
By Richard Fertell, Hamed Ershad, York Xu, Osborne Gumbs, Tammy Tran This article is the first of a series describing how to perform liquid flow rate calibrations at fluid temperatures below +5 °C and above […]
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