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A typical polymer has a refractive index of 1.30–1.70, but a higher refractive index is often required for specific applications. The refractive index is related to the molar refractivity, structure and weight of the monomer. In general, high molar refractivity and low molar volumes increase the refractive index of the polymer. [1]
High-index: 1.60 ≤ n d < 1.74; Very high index: 1.76 ≤ n d; This is a general classification. Often for marketing purposes, materials with n d values that are at or above 1.60 can be referred to as "high-index". Likewise, Trivex and other borderline normal / mid-index materials may be referred to as mid-index.
CR-39 is about half the weight of glass with an index of refraction only slightly lower than that of crown glass, and its high Abbe number yields low chromatic aberration, altogether making it an advantageous material for eyeglasses and sunglasses. A wide range of colors can be achieved by dyeing of the surface or the bulk of the material.
The girls did a high fashion shoot for Solstice sunglasses featuring designs by Dior, Max Mara, Burberry, Gucci & Giorgio Armani. April had mixed reviews, Camille looked pigeon-toed and was the photographer's least favorite, Mercedes looked commercial, Yoanna hid her body well and Shandi took some of the photographer's best shots all year.
Crush video of a woman with fat feet crushing inanimate objects. Adam Kepler also shows up for hugs and kisses Kato Kaelin mocking Charlie Schmidt's Keyboard Cat.Web Redemption for Afro Ninja Mark Allen Hicks who had problems with his backflip while auditioning for a Nike commercial.; [1] Daniel's Extreme Salvia Challenge which involves Daniel attempting the Saltine cracker challenge and the ...
Bessel functions describe the radial part of vibrations of a circular membrane.. Bessel functions, named after Friedrich Bessel who was the first to systematically study them in 1824, [1] are canonical solutions y(x) of Bessel's differential equation + + = for an arbitrary complex number, which represents the order of the Bessel function.