aquafortis การใช้

In 1785, induced by the favour which greeted certain attempts of his to etch in aquafortis, he took down his barber's pole and opened a small print shop in Parliament Close.
The daguerreotype even inspired one commentator to cry, " Steel engravers, copper engravers and etchers, drink up your aquafortis and die ! . . . All nature shall paint herself ."
Blake himself referred to relief etching as " printing in the infernal method, by means of corrosives [ . . . ] melting apparent surfaces away, and displaying the infinite which was hid . " A contemporary description of the method was provided by Blake's friend, aquafortis considerably below them so that the outlines were left as Stereotype ."
He denounced the national policies in Africa, China, and the Philippines, and showed by the reports and by the private letters of soldiers home, how cruel and barbarous and fiendish had been the warfare made by those whose avowed purpose was to carry the blessed light of civilization and Gospel to the benighted native how in very truth these priceless blessings had been handed on the point of a bayonet to the Person Sitting in Darkness . Mark Twain never wrote anything more scorching, more penetrating in its sarcasm, more fearful in its revelation of injustice and hypocrisy, than his article To the Person Sitting in Darkness . He put aquafortis on all the raw places, and when it was finished he himself doubted the wisdom of printing it.