PTBnews 2.2023 At PTB’s Competence Center for Photovoltaics, a new measuring facility has been developed with which the performance of solar modules under standard test conditions can be determined with much greater accuracy compared to […]
PTBnews 2.2023 A method for calculating the simulation uncertainty of a virtual ultrasonic flowmeter has been developed in PTB’s VirtMet Competence Center. This method allows calibration factors relevant to fluid mechanics to be calculated for […]
PTB-News 1.2023 – Real-time capable controlling and monitoring systems are necessary when it comes to ensuring the stability of future electrical distribution and transmission grids. Also required are meters that can accurately and with high […]
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 […]
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 […]
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 […]
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 […]
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 […]
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