15 янв 1842 г. - Cyanotype
Описание:
The Cyanotype is invented by Sir John Herschel A sheet of paper is brushed with iron salt solutions and dried in the dark. An object is then placed on the sheet in direct sunlight. After about 15 minutes a white impression of the subject formed on a blue background.Добавлено на ленту времени:
Дата:
15 янв 1842 г.
Сейчас
~ 182 г назад
