Towards a new kilogram definition based on a fundamental constant

Wolfgang Schwitz; Beat Jeckelmann; Philippe Richard

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.]

Présenté par : Guy Laval

Wolfgang Schwitz ¹ ; Beat Jeckelmann ¹ ; Philippe Richard ¹

¹ Swiss Federal Office of Metrology and Accreditation (METAS), Lindenweg 50, 3003 Bern-Wabern, Switzerland

Comptes Rendus. Physique, Volume 5 (2004) no. 8, pp. 881-892.

Résumé
Abstract

Un des plus grand défis actuels de la communauté de la métrologie consiste à poursuivre le développement du Système International d'unités et à redéfinir l'unité de masse à partir d'une constante fondamentale. Deux stratégies principales sont suivies actuellement, le comptage d'atomes et la réalisation de l'équivalence des puissances mécanique et électrique. Cet article présente la situation actuelle du kilogramme ainsi que les différentes méthodes proposées à ce jour.

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.

Publié le : 2004-10-01

DOI : 10.1016/j.crhy.2004.05.005

Keywords: Kilogram, Planck constant, Avogadro, Watt balance
Mot clés : Kilogramme, Constante de Planck, Avogadro, Balance de watt

Affiliations des auteurs :

Wolfgang Schwitz ¹ ; Beat Jeckelmann ¹ ; Philippe Richard ¹

¹ Swiss Federal Office of Metrology and Accreditation (METAS), Lindenweg 50, 3003 Bern-Wabern, Switzerland

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Wolfgang Schwitz; Beat Jeckelmann; Philippe Richard. Towards a new kilogram definition based on a fundamental constant. Comptes Rendus. Physique, Volume 5 (2004) no. 8, pp. 881-892. doi : 10.1016/j.crhy.2004.05.005. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2004.05.005/

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