Articles Published in Cal Lab Magazine
by Richard Fertell, Hamed Ershad, York Xu, Osborne Gumbs, & Tammy Tran This article is the second of a series describing how to perform liquid flow rate calibrations at fluid temperatures below +5 °C and […]
by Henry A. Zumbrun Imagine that a satellite is launched into space and communications are intermittent. This happens because the satellite is wobbling, which causes connection problems in the receiver. The cause of the wobbling […]
by Roland A. Boucher When the French proposed their first metric system in 1723, they had no idea it had been invented by the ancient Mesopotamians 5000 years earlier. Just as the French proposed to […]
by Dr. Alex Lepek The purpose of this paper is to initiate standardization between calibration labs and users of the file for exchanging calibration data. Experience has it that to agree upon a file that […]
by Richard Hogan Resolution uncertainty is the uncertainty in measurement contributed by resolution of measurement equipment. Resolution Uncertainty is a factor that contributes to uncertainty in measurement. Its influence should be considered in every uncertainty […]
by H. Zumbrun and A. Zeinali There are several labs operating throughout the world, whom do not follow a designated guideline for calculating measurement uncertainty for force calibrations. Realizing the need for a guidance document, […]
by Roland A. Boucher When the French proposed their first metric system in 1723, they had no idea it had been invented by the ancient Mesopotamians 5000 years earlier. Just as the French proposed to […]
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 […]
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