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Metrology areas

  • AUV: Acoustics, Ultrasound and Vibrations
    • Committee structure: CCAUV
    • BIPM contact: Dr Gianna Panfilo
  • EM : Electricity and Magnetism
    • Metrologia: Focus on Metrology in Electricity and Magnetism
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  • The 2018 revision of the SI
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SI Brochure

SI Brochure - TITLE

SI Brochure: The International System of Units (SI)

Note for translators and editors: Details on changes made since May 2019 are available on request to the BIPM Webmaster.

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CC license conditions   Creative Commons Attribution 3.0 IGO License

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The International System of Units – 9th edition – Complete brochure
Le Système international d'unités – 9e édition – Texte en français
The International System of Units – 9th edition – Text in English

Appendices

Appendices

Appendix 2 – Practical realizations of the definitions of some important units

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1

Appendix 1 - Decisions of the CGPM and the CIPM
Annexe 1 - Décisions de la CGPM et du CIPM

3

Appendix 3 – Units for photochemical and photobiological quantities
Annexe 3 – Unités pour la mesure des grandeurs photochimiques et photobiologiques – Text in French

Other files - TITLE

 

Additional files

 

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Questions fréquentes

2019

Frequently Asked Questions

2019

Résumé

2019

Concise Summary

2019

Previous editions - TITLE

Previous editions of the SI Brochure

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8th edition of the SI Brochure (2006)
7th edition of the SI Brochure (1998)
6th edition of the SI Brochure (1991)
5th edition of the SI Brochure (1985)
4th edition of the SI Brochure (1981)
3rd edition of the SI Brochure (1977)
2nd edition of the SI Brochure (1973)
1st edition of the SI Brochure (1970)
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