Sounding Out a New Way to Measure Gas Flow | NIST News
Researchers at NIST have developed a new — and sound — way to accurately measure the rate at which gas flows in and out of a vessel. The technique, which uses acoustic waves to determine […]
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Improving confidence in measurement data from state-of-the-art PTR-MS – NPL
13 Mar 2023, NPL News NPL and the University of Utrecht, Netherlands have collaborated to develop new SI-traceable gas reference materials and a fast calibration approach to improve the quantification and comparability of proton-transfer reaction mass […]
Artifacts, Begone! NIST Improves Its Flagship Device for Measuring Mass | NIST
In a brightly lit subterranean lab at the National Institute of Standards and Technology (NIST) sits a room-sized electromechanical machine called the NIST-4 Kibble balance.The instrument can already measure the mass of objects of roughly […]
Ocean Color System Gets a ‘Refresh,’ Allowing for More Precise and Accurate Measurements | NIST
January 03, 2023 We typically think of the ocean’s color as blue, but in some places, it looks blue-green. That’s because those areas are teeming with single-cell plants called phytoplankton, which contain chlorophyll and reflect […]
Effects of Impurities on the Freezing Plateau of the Triple Point of Water
by Xiaoke Yan, et al. The influence of impurities on the shape of the freezing curves of the triple point of water (TPW) in three small TPW cells was investigated using the freezing curve analysis […]
To Break New Ground With Frequency Combs, a NIST Innovation Plays With the Beat | NIST
An improvement to a Nobel Prize-winning technology called a frequency comb enables it to measure light pulse arrival times with greater sensitivity than was previously possible — potentially improving measurements of distance along with applications […]
Human- and machine-readable KC reports using the PDF/A-3 format | BIPM
The BIPM is pleased to announce the publication of the first key comparison report embedding machine-readable (XML and JSON) versions of the document. Use of the PDF/A-3 standard in this way was originally suggested by […]
Improving accuracy of international standards for graphene | NPL News
The results of the first international comparison of the measurement of graphene have been published in 2D Materials, led by NPL, through the Versailles Project on Advanced Materials and Standards (VAMAS) and in collaboration with […]