Flexi Says: Light energy can be transformed into chemical energy. Cyanotypes are photographic prints that are a result of chemical reactions caused on special light-sensitive paper or fabrics made by soaking them up in iron solution. The product ferric ferric ferrocyanide (an insoluble precipitate, also known as Prussian blue) is formed when the paper is exposed to light and the print of any object in the path of the light is thus obtained.
