File:Plastic Protractor Polarized 05375.jpg
Summary
English: Tension lines in plastic protractor seen under cross polarized light. When a ray of plane polarised light is passed through a photoelastic material, it gets resolved along the two principal stress directions and each of these components experiences different refractive indices. The difference in the refractive indices leads to a relative phase retardation between the two component waves. The birefringence of the plastic layer shows colored fringes. Also called Photoelasticimetry or <a href="https://en.wikipedia.org/wiki/Photoelasticity" class="extiw" title="en:Photoelasticity">photoelasticity</a>. Not seen does not mean No difference. WYSIATI
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:08, 6 January 2017 | | 2,048 × 1,536 (738 KB) | 127.0.0.1 (talk) | <span class="langlabel-en" lang="en" style="font-weight:bold;">English: </span> Tension lines in plastic protractor seen under cross polarized light. When a ray of plane polarised light is passed through a photoelastic material, it gets resolved along the two principal stress directions and each of these components experiences different refractive indices. The difference in the refractive indices leads to a relative phase retardation between the two component waves. The birefringence of the plastic layer shows colored fringes. Also called Photoelasticimetry or <a href="https://en.wikipedia.org/wiki/Photoelasticity" class="extiw" title="en:Photoelasticity">photoelasticity</a>. Not seen does not mean No difference. WYSIATI |
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