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: x48 at 6x7 cm size. x104 at 6x7inch size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Power And Syred |
Taille de l’image : | 2794 px × 3558 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |