Future communications networks that are less vulnerable to hacking could be closer to reality with an invention that measures the properties of single-photon sources with high accuracy. Built by scientists at the National Institute of […]
by Michael Schwartz Over the past 30 years of my software and automation career, I have migrated to a modular approach to software design. I come from an Object Oriented Programming (OOP) background and I […]
by Jerry Eldred Although rise time is a common calibration measurement in pulse/function generators and some oscilloscopes, it is often not well understood. Making a good rise time measurement is somewhat similar to home stereo […]
by Richard Steven & Joshua Kinney Cone DP meters are a member of the generic DP flow meter family. Used extensively throughout different industries for quarter of a century, the cone meter is now a […]
by Sita Schwartz, Editor For an industry outsider looking in, an awful lot of metrology technicians and metrologists have their background in the military. There’s a reason for that: Precision Measurement Equipment Laboratories (PMEL) schools […]
ISO/IEC 17025:2017, General requirements for the competence of testing and calibration laboratories, is the international reference for laboratories carrying out calibration and testing activities around the world. Producing valid results that are widely trusted is […]
Studio photographers may be familiar with the 1,000-watt quartz halogen lamps known as “FELs.” Scientists use them too—specially calibrated ones, at least—to test the performance of light sensors that monitor Earth’s weather, plant life and […]
Last weeks (20 October) meeting of the International Committee for Weights and Measures (CIPM) resulted in a resolution recommending the redefinition of four base units of the International System of Units (SI): the kilogram, the […]
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