Pencil. Coloured scanning electron micrograph of a sharpened pencil. The pencil consists of a thin rod made of clay & graphite (grey),a type of carbon,encased in wood (brown). The mixture of graphite and clay is often incorrectly referred to as the "lead". Magnification: x17 at 6x7 cm size. x45 at 6x7 inch size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Power And Syred |
Taille de l’image : | 4096 px × 5069 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |