Kilogram and new SI definitions
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Published:2020
Issue:3
Volume:48
Page:193-205
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ISSN:1472-3441
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Container-title:High Temperatures-High Pressures
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language:nr
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Short-container-title:HTHP
Abstract
The seven base units of the SI will be defined on May 20, 2019 by reference to fixed and exact values of defining constants. In particular, the kilogram will be defined from the Planck constant h, allowing weaknesses of the previous artefact definition to be lift up. The Kibble balance is one of the methods to realize a macroscopic mass from h: LNE has developed such a balance which is described. This balance has allowed LNE to contribute to the latest adjustment of the h value, and will be used to realize the mass unit in France.
Publisher
Old City Publishing, Inc
Subject
Physical and Theoretical Chemistry,Mechanics of Materials,Condensed Matter Physics