Is the proposed SI revision, according to the October 2018 BIPM documents, scientifically and formally satisfactory?

Franco Pavese

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arXiv · 1601.00857

Is the proposed SI revision, according to the October 2018 BIPM documents, scientifically and formally satisfactory?

Franco Pavese

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Abstract

The use of the fundamental constants for the definition of the most important measurement units of the International System, was considered a good solution to found it on more solid bases. From further analysis, this solution was found implying a number of consequences underevaluated by the BIPM until the proposal presented for discussion in November 2018 to the CGPM, or at least never clearly explained to the signatories Countries of the Metre Treaty. This lack of clarity will affect the implementations of the revised System in the future. Following previous illustrations, this v.5 of the paper is focusing on some issues of direct impact on the correctness of the new definition and on its implementation: how many digits, supported by the latest experimental values, can be stipulated for the numerical values of the constants; why the present experimental uncertainties do not support the pretended precision of the constants; how inconsistencies affect some constant final database; why the CODATA LSA analysis alone is insufficient to support the stipulated precision of the constants; how the need should be explained of keeping the former base units, in order to preserve their present magnitudes; which is the true base-units/constants relationship; how the now-installed hierarchy between the constants and the base units makes changes in the future metrological pyramid; how to still use the present top national standards in future.

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Franco Pavese. 2018-11-08. Is the proposed SI revision, according to the October 2018 BIPM documents, scientifically and formally satisfactory?. https://arxiv.org/abs/1601.00857

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