Postage stamp. Coloured scanning electron micrograph (SEM) of the adhesive side of a postage stamp. The left side (green) is dry,while the right side (blue) is moist. The glue on this stamp is moisture-sensitive,and only becomes sticky when dampened slightly. Magnification unknown | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Steger, Volker |
Bildgröße: | 2836 px × 2284 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |