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Ryan E. Day
Every so often an event, invention, or idea is so momentous it changes the face of entire industries. In some ways, the global response to Covid-19 has been such an event. In the case of metrology,...
    During the late 19th century, Wilhelm Röntgen discovered X-rays and soon after discovered their properties for medical and industrial imaging when he created a radiograph of his wife’s hand. From this discovery, the powerful tool of X-ray radiography and tomography fell into the hands of medical...
    In May 2019, James Beagle and I published an article that contained tables for the analysis of mean moving ranges or ANOMmR (pronounced a-nom-m-r). By request of those using this technique, I have expanded these tables. This article contains these expanded tables and repeats the...
    As a fluid dynamicist and mechanical engineer at the National Institute of Standards and Technology (NIST), I’ve devoted much of my career to helping others see things that are often difficult to detect. I’ve shown the complex flow of air that occurs when a dog sniffs. I’ve helped develop ways to...
    Researchers at the National Institute of Standards and Technology (NIST) have used state-of-the-art atomic clocks, advanced light detectors, and a measurement tool called a frequency comb to boost the stability of microwave signals a hundredfold. This marks a giant step toward better electronics to...

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