Birefringence
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 A calcite crystal laid upon a graph paper with blue lines showing the double refraction |
Birefringence is the optical property of a material having a refractive index that depends on the polarization and propagation direction of light. These optically anisotropic materials are said to be birefringent. The birefringence is often quantified by the maximum difference in refractive index within the material. Birefringence is also often used as a synonym for double refraction, the decomposition of a ray of light into two rays when it passes through a birefringent material. This effect was first described by the Danish scientist Rasmus Bartholin in 1669, who saw it in calcite. Crystals with anisotropic crystal structures are often birefringent, as well as plastics under mechanical stress.
- Related: Cotton-Mouton effect, Crystal optics, Periodic poling, Dichroism
| Stress Analysis Apparatus (based on Birefringence ... Stress Analysis Apparatus (based on Birefringence theory) www.photostress.com - Web |
| Application note on the theory of birefringence Application note on the theory of birefringence www.campoly.com/application_notes.html - Web |
| Artist Austine Wood Comarow employs birefringence ... Artist Austine Wood Comarow employs birefringence to create kinetic figurative images. www.austine.com - Web |
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| Video demonstration and explanation by University ... Video demonstration and explanation by University of Nottingham. www.sixtysymbols.com/videos/birefringence.htm - Web |
