Get new Wikipedia articles popular on Hacker News - one email per week.
No spam. Unsubscribe anytime. · Privacy
Iron gall ink (also known as common ink, standard ink, oak gall ink or iron gall nut ink) is a purple-black or brown-black ink made from iron salts and tannic acids from vegetable sources. It was the standard ink formulation used in Europe for the 1400-year period between the…
Iron gall ink (also known as common ink, standard ink, oak gall ink or iron gall nut ink) is a purple-black or brown-black ink made from iron salts and tannic acids from vegetable sources. It was the standard ink formulation used in Europe for the 1400-year period between the…
Get new Wikipedia articles popular on Hacker News - one email per week.
No spam. Unsubscribe anytime. · Privacy