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The International System of Units is undergoing a redefinition where fundamental constants are to serve as the defining reference values for all seven base units and for all derived units in the future. In 2018, the kilogram, ampere, mole and kelvin will be redefined with the others to follow. This opened exciting new research and application opportunities for metrologists: counting atoms for the kilogram and mole, single-electron tunnelling for the ampere, dielectric constant gas thermometry for the kelvin, etc.
What research have been conducted, are in progress or are planned internationally and in South Africa for the redefinition, the realisation of the units and its implementation? Find out what the Watt balance, Avogadro, Frequency Comb and Quantum Hall projects at the NMISA entail and how the traceability chain will be shortened for Africa.
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