Photoelastic stress (1 of 2)

Photoelastic stress (1 of 2)

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Credit: GIPhotoStock/SCIENCE PHOTO LIBRARY

Caption: Photoelastic stress, Photo 1 of 2. Photoelastic stress in a plastic tape dispenser 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.

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Keywords: aligned, birefringence, crossed, demonstration, education, educational, effect, light, optical, optics, phenomenon, photoelastic, photoelasticity, physics, plastic, polarization, polarizer, polarizing, scientific, still life, stress, tape dispenser

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