Language selection

Government of Canada / Gouvernement du Canada

Search

The Planck constant for the definition and realization of the kilogram

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1002/andp.201800308
AuthorSearch for: 1; Search for:
Affiliation
  1. National Research Council of Canada. Metrology Research Centre
FormatText, Article
SubjectKibble balance; kilogram; Planck constant; revised SI; X-ray crstal density method
Abstract
On May 20, 2019 the values of the Planck, h, and Avogadro, NA, constants will be fixed, revising our measurement system, the International System of Units (SI), and providing a new way to get mass traceability. While the famous energy relations mc² and hf may remind many that the Planck constant is indeed related to mass, it is less recognized how this is also true for the Avogadro constant. These concepts are reviewed in the context of the upcoming revision of the SI. How the fixed values were chosen and how mass traceability will be maintained with the smallest uncertainty are also discussed.
Publication date
PublisherWiley
In
  • Annalen der Physik: 1800308-1–1800308-9.
Noteyes
LanguageEnglish
Peer reviewedYes
Export citationExport as RIS
Report a correctionReport a correction (opens in a new tab)
Record identifier8c7572e8-08d6-497d-9be9-baf15db668cf
Record created2019-04-04
Record modified2020-03-16
Date modified: