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20 °C—A Short History of the Standard Reference Temperature for Industrial Dimensional Measurements
One of the basic principles of dimensional metrology is that a part dimension changes with temperature because of thermal expansion. Since 1931 industrial lengths have been defined as the size at 20 °C. This paper discusses the variety of standard temperatures that were in use before that date, the...
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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[Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology
2007
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4654601/ https://www.ncbi.nlm.nih.gov/pubmed/27110451 http://dx.doi.org/10.6028/jres.112.001 |