Modernizing the SI: implications of recent progress with the fundamental constants

Nick Fletcher; Richard S Davis; Michael Stock; Martin JT Milton

Modernizing the SI: implications of recent progress with the fundamental constants

Instrumentation and Detectors 2015-10-29 v1

Authors: Nick Fletcher , Richard S Davis , Michael Stock , Martin JT Milton

Abstract

Recent proposals to re-define some of the base units of the SI make use of definitions that refer to fixed numerical values of certain constants. We review these proposals in the context of the latest results of the least-squares adjustment of the fundamental constants and against the background of the difficulty experienced with communicating the changes. We show that the benefit of a definition of the kilogram made with respect to the atomic mass constant (mu) may now be significantly stronger than when the choice was first considered 10 years ago.

Keywords

SI units redefinition fundamental constants kilogram atomic mass constant least-squares adjustment

Cite

@article{arxiv.1510.08324,
  title  = {Modernizing the SI: implications of recent progress with the fundamental constants},
  author = {Nick Fletcher and Richard S Davis and Michael Stock and Martin JT Milton},
  journal= {arXiv preprint arXiv:1510.08324},
  year   = {2015}
}

Comments

12 pages, 1 Figure, 2 Tables

Modernizing the SI: implications of recent progress with the fundamental constants

Abstract

Keywords

Cite

Comments

Related papers