False-colour SEM of dirty filter paper
Numéro d’image : 11821620
| False-colour scanning electron micrograph of standard filter paper clogged with silt particles after soil-contaminated water was passed through it. Filter paper is used to separate the liquid from the solid parts of a suspension. It is made from wood pulp (in particular that obtained from spruce,poplar,pine and fir trees),hence the presence of the cellulose fibres seen here under the silt. Soil contains gravel,sand,silt & clay. Most of the particles here are silt,with a size range of 2 to 50 micrometres. Gravel & sand would be unlikely to stay suspended in water anyway,while,at this magnification,the clay is probably invisible. Magnification: x60 at 6x4.5cm size | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
| Taille de l’image : | 2554 px × 3448 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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