折射度

Critical angle of refraction - semi-circular cylindrical mobile light source, the incident angle change the size of refraction angle to change at this time, when the refraction angle = 90 degrees, which is critical at this time angle of incidence angle, the critical angle of water at 40 degrees large about anything mobile source of water in the water screen that is a reflection of light, a phenomenon that total reflection.

光折射的临界角定义：光折射角=90度时，入射角即为临界角，按二方法，将半导体激光光源去掉铁夹，吸附在右下角的铁板上入射光对准中心，即产生折射光线，沿半圆形柱面移动光源，改变入射角的大小，这时折射角也改变，当折射角=90度时，这时入射角即为临界角，水的临界角大的在40度左右，再做移动光源在水中的水屏即出现反射光线，这种现象称全反射。

Dioptometer:an instrument used for measuring ocular refraction .

屈光计：用于测量眼睛折射度的仪器。

In strictly, it is hard to make the light normal incident into the sphere, double refraction will take place in crystal sphere when a TEM〓 mode Gaussian beam oblique incident into the sphere, and the two orthogonal polarized beams are both elliptical Gaussian beam. The ellipticity and eccentricity of the elliptical Gaussian beam will change with the incident angle, and for a fixed incident angle, they will change with the shifting of incident beam waist position.

由于严格意义上的正入射较难实现，基模圆高斯光束斜入射晶体球后将在球内产生双折射，且球内偏振态正交的两束折射光都将是椭圆高斯光束，它们的椭圆度e和偏心度Δ随入射角的改变而改变，在入射角一定的情况下，入射光束束腰的移动也将改变这两束折射光的椭圆度e和偏心度Δ。

A systemic research on the birefringence of side-hole fiber is presented. The research results show that the birefringence of circular-core side-hole fiber relies mainly on stress birefringence, its fast axis is parallel to the link line of the two holes, and its intrinsic birefringence increases exponentially with the angle and ellipticity of side holes.

本论文的主要研究结果和创新在于： 1、对边孔光纤的双折射特性进行了系统研究，提出圆芯型边孔光纤以应力双折射为主，两边孔连线方向为其快轴方向，其双折射大小与边孔张角和边孔椭圆度成指数关系。

We brought forward theoretically the definition of refrangibility andstudied the nonlinear refraction and absorption of clusters based on the excited-state Z scan theory.

在理论上给出了折射度的定义，应用激发态Z扫描理论研究了团簇的非线性折射与吸收。

It is pointed out that if we don′t take into account therefrangibility of the high-order excited state, the material is self-defocusing whenthe refrangibility of the ground state is larger than that of the excited state andself-focusing if it is smaller.

指出如果不考虑高阶激发态折射，基态折射度大于激发态折射度为自散焦，小于激发态折射度为自聚焦。

We put it across that the sign of nonlinear refractiveindex changes under certain conditions if the high-order excited state contributessignificantly to the refractive index.The nonlinearity changes from self-defocusing to self-focusing if the refrangibility of the ground state is larger thanthat of the first excited state and smaller than that of the second excited state.

高阶激发态折射度贡献较大时，非线性折射率符号在一定条件下存在转化：如果基态折射度大于低阶激发态的折射度而小于高阶激发态折射度，材料发生自散焦—自聚焦转化；如果基态折射度小于低阶激发态折射度大于高解阶激发态折射度则发生自聚焦—自散焦转化。

The sectored periodic table, which can be used to the study of crystal chemistry, has been put forward.

论文的第一部分在分析了金属半径、阳离子半径、元素标准熵、原子折射度等与元素电子构型的定量关系后，鲜明地提出：晶体化学参数与元素的电子构型之间存在定量关系，元素的一些性质与周期表之间可以有统一的定量表述方式。

The density, refractive index and molar refraction of glasses,and their relationship with composition had been measured.

测量了玻璃样品的密度，折射率和摩尔折射度，并分析了它们和玻璃组分的关系。

Based on characteristics and connectivity of the groups in molecules,a new method was developed to calculate the molar refractions of cycloalkanes from molecular structure.

根据分子结构的特点，发展了一种计算环烷烃摩尔折射度的新方法。对 2 3 2种环烷烃的计算结果表明，摩尔折射度计算值十分接近实验值，平均误差 0 2 8%，计算精度显著优于文献方

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。