Photographic chemicals, polarised light micrograph. This is a chemical mixture comprising mainly potassium ferrocyanide. Potassium ferricyanide is an orange-red salt that is used in cyanotype, a photographic printing process. Magnification: x70 when printed 10cm wide. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gaff, Karl |
Taille de l’image : | 7952 px × 5304 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |