BIPM - SI derived and supplementary units

Decisions relating to SI derived and supplementary units

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Summary

Decisions relating to the establishment of the SI

Decisions relating to the base units of the SI

Decisions relating to SI derived and supplementary units

Decisions concerning terminology and the acceptance of units for use with the SI

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SI brochure, from Appendix 1

SI derived units

	12th CGPM, 1964	accepts the continued use of the curie as a non-SI unit
	13th CGPM, 1967/68	lists some examples of derived units
	15th CGPM, 1975	adopts the special names becquerel, Bq, and gray, Gy
	16th CGPM, 1979	adopts the special name sievert, Sv
	CIPM, 1984	decides to clarify the relationship between absorbed dose (SI unit gray) and dose equivalent (SI unit sievert)
	CIPM, 2002	modifies the relationship between absorbed dose and dose equivalent

Supplementary units

	CIPM, 1980	decides to interpret supplementary units as dimensionless derived units
	20th CGPM, 1995	decides to abrogate the class of supplementary units, and confirms the CIPM interpretation that they are dimensionless derived units

Note:

For the official text, please refer to the PDF files available at:

http://www.bipm.org/utils/common/pdf/si_brochure_8_en.pdf (in English) and

http://www.bipm.org/utils/common/pdf/si_brochure_8_fr.pdf (in French).