Iron and sulphur. Elemental iron (Fe, left) and sulphur (S, right) powders in weighing boats. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Turtle Rock Scientific |
Taille de l’image : | 5161 px × 3435 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |