Photoelastic stress in lenses,Photo 1 of 2. Photoelastic stress in spectacles' plastic lenses is observed by placing it between co-aligned (Photo 1) and crossed (Photo 2) linear polarizers. Built-in stress causes optical birefringence which is revealed as colored bands when illuminated by white light. Photo 1 of 2 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 5124 px × 3383 px |
Model Release : | Non requis |
Property Release : | Non requis |
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