For readers who may have missed the news from Versailles amidst the current Brexit hullabaloo, we pass on a link to an article published by the BBC. This explains in laymen’s terms the long-awaited redefinition of the SI base unit of mass.
The BBC article may be found here:
A more technical explanation is provided by the publication Physics World:
We are grateful to one of our frequent contributors, Martin Vlietstra, who gave this explanation a few days ago of “Who does what” in the world of SI.
“The 26th CGPM is expected to agree the new definition on 16 November 2018. The draft resolution, which is being submitted by the CIPM can be seen at:
“For the record,
*The BIPM (“International Bureau of Weights and Measures” or, in French, “Bureau international des poids et mesures”) is the laboratory and associated staff located at Sevres close to Paris.
*The CIPM (“International Committee for Weights and Measures” or, in French, “Comité international des poids et mesures”) is an executive body consisting of 18 metrologists elected by the CGPM. The CIPM meets at least once a year and has executive oversight over the functioning of the Metre Convention and of the BIPM.
*The CGPM (“General Conference on Weights and Measures” or in French “Conférence générale des poids et mesures”) is a general assembly of representatives of all the countries that are party to the Metre Convention. It meets once every four to six years. This body has the final say on any changes to the definitions of SI.”