Graphite,a soft,steel-grey to black,hexagonally crystallized allotrope of carbon with a metallic lustre and a greasy feel,used in lead pencils,lubricants,paints,and coatings,that is fabricated into a variety of forms such as moulds,bricks,electrodes,crucibles,and rocket nozzles. Also called black lead,plumbago | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Schneider, Mark A. |
Taille de l’image : | 4928 px × 3264 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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