New Prefixes in the SI: ronto, quecto, ronna, quetta
As of November 2022, in its first update to prefixes since 1991, the International System of Units (SI) now includes prefixes ronna, quetta, ronto, and […]
kilogram
Happy World Metrology Day: A Change to SI Units
Effective on this World Metrology Day (May 20, 2019), the International System of Units is now based on a set of definitions each linked to […]