折射率

The results show that a complicated oscillation will happen when the angular frequency increases.

研究结果表明，负折射率材料的热发射率随角频率的变化呈现复杂的振荡现象。

In this thesis, the photoinduced absorption change and the photoinduced refractive index change of the BR-D96N film are studied. The angularly multiplexed volume holographic recording is realized on the BR-D96N film.

本论文对BR-D96N样品在不同波长下光致吸收变化与光致折射率变化特性进行了研究，并在此基础上进行了角度复用全息记录的初步实验。

In such a medium, the direction of the Poynting vector monochromatic plane wave is antiparallel to that of its phase velocity. Because of that, DNG displays some unusual electromagnetic properties such as backward-wave effect, negative refractive effect, perfect lens and a limit situation, zero index of refraction materials.

在这种材料中，单色均匀平面波的相速方向和坡印亭矢量方向是相反的，因此使双负材料表现出一系列反常的电磁特性如：回波效应、负折射效应、完美透镜效应和一种极限情况即零折射率材料等。

This result shows the sample has the spectral response in terahertz spectral range and the fact demonstrates the terahertz spectra of asparagine could be used to study the molecular structure and vibration of sample.

用太赫兹时域光谱技术研究了室温条件下的多晶天冬酰胺样品的光谱特征，得到了相应的吸收谱和折射率。

Have been developed. However, these approaches are all complicated in the description of physical mechanism and expensive in the consumption of computational resource, even encounter the convergence problem of the computer algorithm when the size parameter, the asphericity, or the refractive index of the scattering particle becoming too extreme.

然而，这些方法在物理机制的描述上过于复杂，并且要求占用极大的计算资源，甚至会出现难以克服的收敛性问题（当一些关键参量如粒子的尺度，非球性，折射率变得极端时）。

Also, it is very useful for making a new type of band-pass filter or determining the refractive indices of some materials correctly, etc.

这个新现象也非常有意义，它可用来制造新型的带通滤波器以及凖确测定某些材料的折射率等。

This paper presents in detail the design principle and method of 14～16.25μm infrared bandpass filter using concept of equivalent refraction index.

本文详细介绍了用等效折射率概念、设计14～16.25μm红外带通滤光片的原理和方法，给出了设计的膜系，分析了主要工艺及膜层厚度的控制对红外带通滤光片光学特性的相互影响，并与国内外同类滤光片的光学特性进行了比较。

The coexistence curves and light scattering data for a critical solution of benzonitrile + octane have been reported. The critical exponents relating to the difference in the density variables between two coexisting phasesβ, the osmotic compressibilityγ, and the correlation length v have been deduced and the values were consistent with the 3D-Ising value in the range close to the critical point. The experimental results of the coexistence curves have also been analyzed to examine the Wegner correction terms and the behavior of the diameter of the coexistence curves.

用折射率法和不同角度的光散射法测量了苯甲腈+正辛烷二元体系在临界温度附近的液-液共存曲线和一相区不同温度下的渗透压缩系数及关联长度，得到与共存曲线相关的临界指数β，与渗透压缩系数相关的的临界指数γ和与关联长度相关的的临界指数γ，发现在近临界点体系符合3D-Ising模型，讨论了共存曲线直径和Wagner校正项。

Many types of optical transmission, and here I step on the weak-guided wave fiber wave equation to study and understand the step-index optical waveguide mode, are second-order differential equations Bessel equation.

光纤传输的种类很多，在这里我只对阶跃型弱导波光纤波动方程进行研究，了解阶跃折射率光纤的波导模式，得到二阶微分方程Bessel方程。

In particular, for the TM case, the biaxial nature of nonlinear refractive index is considered without any approximation.

特别是对于TM波，考虑了非线性折射率的双轴性，没有任何近似。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。