Khắc axit
Also known as etching technique
thumb|upright|The Soldier and his Wife. Etching by Daniel Hopfer, who is believed to have been the first to apply the technique to printmaking.
AI overview
Etching is a printmaking technique where an image is created by using acid to eat away at a metal plate, which is then used to print multiple copies of the design. It matters because it was an important artistic innovation that allowed printmakers like Daniel Hopfer to produce detailed images that could be reproduced and shared widely.
AI-generated from the Wikipedia summary — may contain errors.