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CCT Working Group 4: thermodynamic temperature determinations and extension of the ITS-90 to lower temperatures
CCT summary
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CCT publications and bibliography
Mise en pratique for the definition of the kelvin
Presentation by Dr Ugur to the 23rd CGPM
Photographs of the CCT
Key comparisons
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CCT documents
CCT-WG5 documents
CCT-WG8 documents
TG-SI documents
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CCT working documents
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CCT-WG8 documents
TG-SI documents
WG3, WG6, WG7 and WG8 discussion forums
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Terms of reference

The terms of reference of CCT-WG4 are:
    to review and make recommendations concerning thermodynamic temperature determination and the definition of the kelvin.

Working Group 4 is tasked with continuing the production and dissemination of Supplementary Information for the PLTS-2000 and with monitoring progress on potential redefinition of the kelvin in terms of the Boltzmann constant.