ASA/ANSI S12.18-1994 (R2023): Sound Pressure Level
Sound pressure is the difference between the pressure from a sound wave and the ambient pressure of what the sound is traveling through (usually air)….
Realization of the Kelvin
Until 2019, the kelvin (K) was defined as “the fraction 1/273.16 of the thermodynamic temperature of the triple point of water.” The temperature measurement world…
ISO Guide 84:2020 – Addressing Climate Change in Standards
Here are some things you should know about climate change: the nine years from 2013 to 2021 rank among the 10 warmest years on record;…
Symbols for Medical Device Labels
A voluntary consensus standard can result in the summation of the best existing practices and techniques in an industry that were in use prior to…
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Thermocouples: Calibration Tables, Types, Specifications, and Standards
When two dissimilar metals are joined at two junctions, they generate what is known as an electromotive force (emf). This emf arises due to varying…
Pyrometers: Measuring High Temperatures from a Distance
Precision is a key attribute in virtually all processes conducted by scientists and engineers. For measuring temperature, a task essential for maintaining and understanding a…