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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.
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 ...
The CD version could be purchased online, downloaded as a DVD image file or Torrent file, or accessed online at the project's website. [284] [285] Wikipedia Version 0.7: 2009–2010 First DVD version. General release of around 31,000 articles taken from all subject areas.
Helium has several unique qualities when compared with other elements: its boiling point at 1 atm is lower than those of any other known substance; it is the only element known to exhibit superfluidity; and, it is the only element that cannot be solidified by cooling at atmospheric pressure [29] (an effect explained by quantum mechanics as its ...