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An update on the kilogram

By Ian Mills

Abstract

We need a new definition for the kilogram! The present\ud definition was sanctioned by the first General Conference on Weights and Measures (CGPM, Conférence Général des Poids et Mesures) in 1889, with a minor revision to the words in 1901, and remains unchanged after 116 years. It is the\ud only base unit of the International System of Units (the\ud SI) that is still defined in terms of a prototype artifact,\ud the International Prototype of the Kilogram (IPK), which is kept in a safe at the International Bureau of Weights and Measures (the BIPM, Bureau International des Poids et Mesures) in Sèvres, near Paris

Publisher: IUPAC: the International Union of Pure and Applied Chemistry
Year: 2005
OAI identifier: oai:centaur.reading.ac.uk:7231

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