Pencil and sharpener,X-ray. This rubber-tipped pencil is sharpened using the pencil sharpener next to it. The X-ray has revealed the graphite core (dark). This core is surrounded by a cladding of wood | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gustoimages |
Bildgröße: | 3902 px × 4500 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |