Photochromatic sunglasses in bright conditions. Photochromatic lenses darken on exposure to ultraviolet (UV) light. The greater the amount of UV light in an environment the darker the lenses become | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Chillmaid, Martyn F. |
Taille de l’image : | 4994 px × 3543 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |