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Resolution 6 of the 13th CGPM (1967/68)
Version française
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

Comptes Rendus de la 13e CGPM (1967/68), 1969, p.105
Metrologia, 1968, 4(1), 41-45


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

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

Other Resolutions of the 13th CGPM (1967/68)
Resolution 1
Resolution 2
Resolution 3
Resolution 4
Resolution 5
Resolution 6
Resolution 7
Resolution 8
Resolution 9
Resolution 10
Resolution 11
Resolution 12