Limescale,coloured scanning electron micrograph (SEM). Limescale,which occurs when hard water is boiled,is composed of calcium or magnesium carbonate. Magnification: x1,600 when printed at 10 centimetres wide | |
Licence : | Libre de droits |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |