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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]
In optics and lens design, the Abbe number, also known as the Vd-number or constringence of a transparent material, is an approximate measure of the material's dispersion (change of refractive index versus wavelength), with high values of Vd indicating low dispersion.
Mid-index: 1.54 ≤ n d < 1.60; 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.
The refractive index of water at 20 °C for visible light is 1.33. [1] The refractive index of normal ice is 1.31 (from List of refractive indices). In general, an index of refraction is a complex number with real and imaginary parts, where the latter indicates the strength of absorption loss at a particular wavelength. In the visible part of ...
Map of the United States with Missouri highlighted. Missouri is a state located in the Midwestern United States.In Missouri, cities are classified into three types: 3rd Class, 4th Class, and those under constitutional charters.
The indicators are used to create a health index, an education index and an income index, each with a value between 0 and 1. The geometric mean of the three indices—that is, the cube root of the product of the indices—is the human development index. A value above 0.800 is classified as very high, between 0.700 and 0.799 as high, 0.550 to 0. ...
Cardiac index is a critical parameter in evaluating cardiac performance and the adequacy of tissue perfusion. In healthy adults, the normal range of cardiac index is generally between 2.6 to 4.2 L/min/m². Values below this range may indicate hypoperfusion and are often seen in conditions such as heart failure, hypovolemia, and cardiogenic shock.
Tatiana Yadira Suarez Padilla [7] (born December 19, 1990) is an American professional mixed martial artist and former wrestler who currently competes in the women's Strawweight division of the Ultimate Fighting Championship (UFC). [8]
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