A Calculation of Changes in the Electrical Units

Abstract

A least-squares estimation of the difference between the previous as-maintained electrical units, based on artifacts, and the new electrical units, maintained using the quantum Hall effect, is discussed. A linear fit of the Ω69-BI drift is considered in order to combine the direct and indirect estimates. The statistical correlations of the input data are discussed and consequential reformulations of the algorithms used for evaluating input data are given.

Unit systems based on the fundamental constants

“…Monitoring the kilogram and then introducing an SI modification will increase the difficulty of the task of estimating the change in size of the unit of mass. This task is analogous, in a sense, to the task [11] of estimating the changes in size of electrical units which were introduced when representations of the units were changed.…”