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Comptes Rendus Physique
Volume 5, n° 8
pages 881-892 (octobre 2004)
Doi : 10.1016/j.crhy.2004.05.005
Towards a new kilogram definition based on a fundamental constant
Vers une définition du kilogramme basée sur une constante fondamentale.
 

Wolfgang Schwitz , Beat Jeckelmann , Philippe Richard
Swiss Federal Office of Metrology and Accreditation (METAS), Lindenweg 50, 3003 Bern-Wabern, Switzerland 

*Corresponding author.
Abstract

The further development of the International System of Units and the redefinition of the mass unit based on a fundamental constant is a priority task of the metrology community. Two main strategies are pursued today, counting atoms and relating mechanical to electrical power. In this article the actual status of the kilogram and the different proposed methods are reviewed. To cite this article: W. Schwitz et al., C. R. Physique 5 (2004).

The full text of this article is available in PDF format.
Résumé

Un des plus grand défis actuels de la communauté de la métrologie consiste à poursuivre le développement du Système International dʼunités et à redéfinir lʼunité de masse à partir dʼune constante fondamentale. Deux stratégies principales sont suivies actuellement, le comptage dʼatomes et la réalisation de lʼéquivalence des puissances mécanique et électrique. Cet article présente la situation actuelle du kilogramme ainsi que les différentes méthodes proposées à ce jour. Pour citer cet article : W. Schwitz et al., C. R. Physique 5 (2004).

The full text of this article is available in PDF format.

Keywords : Kilogram, Planck constant, Avogadro, Watt balance

Mots-clés : Kilogramme, Constante de Planck, Avogadro, Balance de watt




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