Grain separation experiment
Numéro d’image : 11519484
| Grain separation. Experiment showing how different grains in a mixture separate into layers,an effect seen during the formation of sedimentary rocks such as sandstone. A mixture of sand & coloured sugar (red) is poured between 2 vertical sheets of glass. The mixture forms a mound whose sides periodically reach a critical angle,causing an avalanche. The smooth grains of sand stop short of the kink at the bottom of the heap,whilst the bigger,rougher sugar grains go a little further. As more grains fall the kink rides upward,forming 2 layers. Each succeeding avalanche makes another pair of layers. This experiment was devised by Hernan Makse of Boston University,USA,in 1997 | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Ogden, Sam |
| Taille de l’image : | 4488 px × 4525 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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