Nacre crystal layers. Coloured scanning electron micrograph (SEM) of the layered crystal plates forming the nacre (mother-of-pearl) in a nautilus shell. The interior shell layer in a nautilus consists of this composite material, which is mostly a form of aragonite, a calcium carbonate mineral. Nacre has a very high tensile strength due to a combination of soft organic layers and hard inorganic platelets of aragonite. The nautilus is a marine cephalopod mollusc. Magnification: x3300 when printed at 10 centimetres high. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / EYE OF SCIENCE |
Taille de l’image : | 3883 px × 4501 px |
Model Release : | Non requis |
Property Release : | Non requis |
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