Optical property in which a single ray of unpolarized light (see polarization) splits into two components traveling at different velocities and in different directions. One ray is refracted (see refraction) at an angle as it travels through the medium, while the other passes through unchanged. The splitting occurs because the speed of the ray through the medium is determined by the orientation of the light compared with the crystal lattice of the medium. Since unpolarized light consists of waves that vibrate in all directions, some will pass through the lattice without being affected, while others will be refracted and change direction. Materials that exhibit double refraction include ice, quartz, and sugar.
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Note: The component waves follow different paths, experience different attenuations, have different phase velocities, and, in general, are elliptically polarized in opposite senses.
SUBMITTED PHOTO from Left: Baylee Misner, Jace Heath, Jasmine Wheeler, Emma Watts Are Part of Future Rockhounds of America, a Geology Club for Pebble Pups 8 to 12 Years of Age. the Pocatello Chapter Is Supported Locally by the Southeastern Idaho Gem and Mineral Society.[bullet]This Past Year the SEIGMS Poky Rockstars Have Been Learning about Minerals That Have Special Properties or Effects. on April 6 the Rockstars Demonstrated Some of These Phenomena by Hosting an "Amazing Mineral Magic Show" at the Annual SEIGMS Gem and Mineral Show at the Fairgrounds. Youngsters Visiting the Kids' Booth Discovered Rocks That Float, Minerals You Write with, and Minerals That Display Special Effects Such as Magnetism, Double Refraction, Chatoyancy, Natural Fiber Optics, and Fluorescence. Our Young Magicians Provided Educational Handouts That Reveal the Secrets of Our Magical Minerals and Their Strange and Wonderful Forms
Apr 14, 2013; SUBMITTED PHOTOFrom left: Baylee Misner, Jace Heath, Jasmine Wheeler, Emma Watts are part of Future Rockhounds of America, a...
Publication No. WO/2010/087596 Published on Aug. 5, Assigned to Woongjin Chemical for Brightness Enhancement Film (South Korean Inventors)
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