Soap bubbles in polarised light
Numéro d’image : 11628261
| Lather in water containing a liquid soap. One of the peculiar properties of water is its high surface tension compared to most liquids. Surface tension is a form of energy that makes a liquid behave as though it is enclosed in a stretched "skin". Small droplets form spheres,and undisturbed extended liquids have flat surfaces; each represents a minimum potential energy state. A bubble of lather is a droplet of water filled with air,and it will tend to form a sphere,because a sphere is the shape with the minimum surface area. In a mass of bubbles,each will adopt the lowest energy state possible,leading to a variety of curved polygonal shapes.The water in the picture is within a plastic dish made of polystyrene and photographed in polarised light. The colours result from differential polarisation of the light as it passes through the non-homogeneous plastic material of the dish | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
| Taille de l’image : | 5212 px × 3468 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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