Photoelastic stress in lenses
Photoelastic stress in spectacles' plastic lenses is observed by placing it between crossed linear polarizers. Built-in stress causes optical birefingence which is revealed as colored bands when illuminated by white light.
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Photo credit: © GIPhotoStock Z / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: birefringence, crossed, demonstration, education, educational, effect, glasses, lens, life, light, optical, optics, phenomenon, photoelastic, photoelasticity, physics, plastic, polarization, polarizer, polarizing, science, scientific, spectacles, stress
