Scanning electron microscope (SEM), cut-away illustration. An SEM uses an electron beam (vertical green line) to obtain a three-dimensional image of an object at magnifications much higher than can be obtained using light waves. The beam is scanned over the sample in a vacuum, causing the emission of secondary electrons (diagonal green line). These secondary electrons are detected and used to form the image. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gaff, Karl |
Taille de l’image : | 4972 px × 7030 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |