International System of Units (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "International System of Units" in English language version.

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  • Bigourdan, Guillaume (2012) [1901]. Le Système Métrique Des Poids Et Mesures: Son Établissement Et Sa Propagation Graduelle, Avec L'histoire Des Opérations Qui Ont Servi À Déterminer Le Mètre Et Le Kilogramme [The Metric System of Weights and Measures: Its Establishment and its Successive Introduction, with the History of the Operations Used to Determine the Metre and the Kilogram] (in French) (facsimile ed.). Ulan Press. p. 176. ASIN B009JT8UZU.

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  • United States Congress House Committee on Ways and Means (1991). Overview of the Federal Tax System: Including Data on Tax and Revenue Measures Within the Jurisdiction of the Committee on Ways and Means. U.S. Government Printing Office. p. 98.
  • Bahadori, Alireza; Nwaoha, Chikezie; Clark, Malcolm William (4 December 2013). Dictionary of Oil, Gas, and Petrochemical Processing. CRC Press. p. 36. ISBN 978-1-4665-8826-4.
  • Tunbridge, Paul (1992). Lord Kelvin, His Influence on Electrical Measurements and Units. Peter Pereginus Ltd. pp. 42–46. ISBN 978-0-86341-237-0.
  • McKenzie, A. E. E. (1961). Magnetism and Electricity. Cambridge University Press. p. 322.
  • Kennelly, Arthur E. (July 1903). "Magnetic Units and Other Subjects that Might Occupy Attention at the Next International Electrical Congress". Transactions of the American Institute of Electrical Engineers. XXII: 529–536. doi:10.1109/T-AIEE.1903.4764390. S2CID 51634810. [p. 534] The expedient suggests itself of attaching the prefix ab or abs to a practical or Q. E. S. unit, in order to express the absolute or corresponding C. G. S. magnetic unit. … [p. 535] In a comprehensive system of electromagnetic terminology, the electric C. G. S. units should also be christened. They are sometimes referred to in electrical papers, but always in an apologetic, symbolical fashion, owing to the absence of names to cover their nakedness. They might be denoted by the prefix abstat.

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  • These are "individuals with a long-term involvement in matters related to units, having actively contributed to publications on units, and having a global view and understanding of science as well as knowledge on the development and functioning of the International System of Units."[12] As of April 2020, these include[11][13] Marc Himbert and Terry Quinn.

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  • The official term is "States Parties to the Metre Convention"; the term "Member States" is its synonym and used for easy reference.[7] As of 13 January 2020,[7] there are 63 Member States and 39 Associate States and Economies of the General Conference.[j]
  • The SI Brochure for short. As of 2022, the latest edition is the ninth, originally published in 2019 and updated in 2022. It is Ref.[3] of this article.

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en.wiktionary.org

  • For example, from 1889 until 1960, the metre was defined as the length of the International Prototype Metre, a particular bar made of platinum-iridium alloy that was (and still is) kept at the International Bureau of Weights and Measures, located in the Pavillon de Breteuil in Saint-Cloud, France, near Paris. The final artefact-based definition of the metre, which stood from 1927 to the redefinition of the metre in 1960, read as follows:[3]: 159 

    The unit of length is the metre, defined by the distance, at , between the axes of the two central lines marked on the bar of platinum-iridium kept at the Bureau International des Poids et Mesures and declared Prototype of the metre by the 1st Conférence Générale des Poids et Mesures, this bar being subject to standard atmospheric pressure and supported on two cylinders of at least one centimetre diameter, symmetrically placed in the same horizontal plane at a distance of 571 mm from each other.

    The '' refers to the temperature of 0 °C. The support requirements represent the Airy points of the prototype—the points, separated by 4/7 of the total length of the bar, at which the bending or droop of the bar is minimised.[51]

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