On the generative structure of SI units

Not long ago, the International System of Units (Système international d’unités, SI) has undergone the very important changes concerning the definitions of its base units, the pool of the accepted units and the range of the unit prefixes. It is probably a principal reason for the discussions about i...

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Bibliographic Details
Published inMeasurement : journal of the International Measurement Confederation Vol. 256; p. 118436
Main Authors Pražák, Dominik, Tesař, Jiří, Šmíd, Marek
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.12.2025
Subjects
Base units
Coherent unit system
Derived units
Physiological units
User adoption
Base units
User adoption
SI
Physiological units
Coherent unit system
Derived units
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Summary:Not long ago, the International System of Units (Système international d’unités, SI) has undergone the very important changes concerning the definitions of its base units, the pool of the accepted units and the range of the unit prefixes. It is probably a principal reason for the discussions about its possible future improvements have also gained momentum. Another important stimulus has been a setting of direction towards an SI suitable for the digital era. This paper reacts to the recent thoughts and proposals focused on the internal organisation of the SI units. It tries to highlight the importance of the SI generative structure as a framework for any future changes.
ISSN:0263-2241
DOI:10.1016/j.measurement.2025.118436