10 janv. 1842 - Sir John Herschel
Description:
England. Sir John was a astronomer, seeking a way to document his notes.Created the Cyanotype Process: a blueprint process where the paper was coated with iron salts and then used in contact printing. The paper was washed in water and after a white image on a blue background appeared.
Ajouté au bande de temps:
Date:
10 janv. 1842
Maintenaint
~ Il y a 182 ans
