curprev10:1810:18, 30 August 2023 Reuqrtalkcontribs 17,364 bytes+3,156 To prevent a possible uncertainty regarding whether the lede reflects the changes to the SI system since 2019, I added the clarification that the 2019 redefinition of the SI base units didn't affect the definitions given in the lede. Further, I added two notes which explain the relevant changes that did occur as a result of the redefinition.undo
curprev01:2901:29, 20 November 2021 Glakestalkcontribs 13,885 bytes+49 Adding local short description: "Type of atomic measurement", overriding Wikidata description "dimensionless physical quantity: ratio of the average mass of atoms of an element (in a given sample) to one unified atomic mass unit.The unified atomic mass unit, symbol u, is defined being 1⁄12 of the mass of a carbon-12 atom" (Shortdesc helper)undo