Fortifications on the James. - Public domain dedication image
Резюме
The albumen silver print is a photographic printing process that was widely used in the 19th century. It involves coating paper support with a mixture of egg whites and salt, which creates a glossy surface to hold light-sensitive silver salts. The paper is then sensitized in a solution of silver nitrate, and exposed in a camera or under a negative. After exposure, the print is developed in a solution of gallic acid and silver nitrate, which reduces the silver salts to metallic silver and creates the final image. The albumen print process was widely used for commercial and fine art photography in the 19th century and produced high-quality, detailed images with a distinctive glossy finish.
Тэги
Соединенные Штаты
история
гражданская война 1861 1865
форты укрепления
Джеймс Ривер, штат Вирджиния
отдел рукописей и архивов
записи санитарной комиссии США
высокое разрешение
создатель санитарной комиссии США
форты и укрепления
архивные материалы
белковые отпечатки
укрепления
Джеймс
сжатый исторический материал
переписка
стереоскопические виды
публичная библиотека Нью-Йорка
Дата
1861 - 1871
Авторы
United States Sanitary Commission, Creator
Источник
New York Public Library
Ссылка
Информация о правах
Creative Commons CC0 1.0 Universal Public Domain Dedication ("CCO 1.0 Dedication")