Photoelastic stress,Photo 1 of 3. Photoelastic stress in a plastic protractor is observed by placing it between co-aligned (Photo 2) and crossed (Photo 3) linear polarizers. Built-in stress causes optical birefringence which is revealed as colored bands when illuminated by white light. Also shown (Photo 1) is the same protractor in un-polarized light. Photo 1 of 3 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 5111 px × 3387 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
|