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Recalibration of the U.S. National Prototype Kilogram
The U.S. national prototype kilogram, K20, and its check standard, K4, were recalibrated at the Bureau International des Poids et Mesures (BIPM). Both these kilograms are made of platinum-iridium alloy. Two additional kilograms, made of different alloys of stainless steel, were also included in the...
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| Veröffentlicht in: | J Res Natl Bur Stand (1977) |
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| 1. Verfasser: | |
| Format: | Artigo |
| Sprache: | Inglês |
| Veröffentlicht: |
National Institute of Standards and Technology
1985
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| Schlagworte: | |
| Online Zugang: | https://ncbi.nlm.nih.gov/pmc/articles/PMC6664201/ https://ncbi.nlm.nih.gov/pubmed/34566154 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.6028/jres.090.015 |
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