Resolution 6 of the 13th CGPM (1967)

SI derived units

The 13th Conférence Générale des Poids et Mesures (CGPM)

considering that it is useful to add some derived units to the list of paragraph 4 of Resolution 12 of the 11th CGPM (1960),

decides to add:

wave number 1 per metre m–1
entropy joule per kelvin J/K
specific heat capacity joule per kilogram kelvin J/(kg × K)
thermal conductivity watt per metre kelvin W/(m × K)
radiant intensity watt per steradian W/sr
activity (of a radioactive source) 1 per second s–1

DOI : 10.59161/CGPM1967RES6E

The reader should note that the official version of this Resolution is the French text


The unit of activity was given a special name and symbol by the 15th CGPM in 1975 (Resolution 8).

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