Technically speaking, SI measures electrical charge in pigeons.
https://es.wikipedia.org/wiki/Charles-Augustin_de_Coulomb
https://www.filae.com/nom-de-famille/COULOMB.html
https://en.wiktionary.org/wiki/colombe
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Columbus also comes from the same word "columba", so residents of DC live in "The District of Pigeonland"
