折射

Triplets of 36cm with a 30cm "E" objective guidescope for astrographic uses, and numerous smaller refractors of 40cm, 30cm, 25cm down to 6cm achromatic models for use by amateurs and schools.

款36cm口径，还有一个通道是使用30cm &E&型物镜的指引镜，作天体照相或天文定位用途来使用；还有很多小一些口径的折射镜，使用40cm、30cm、 25cm 小到 6cm的消色差镜头型号，供业余爱好者和学校使用。

Considering the thermal-induced birefringence, the g parameter coordinate system is analyzed, the formulas of radially polarized and azimuthally polarized focal lengths in three different cavity structures are deduced and the proper cavity structure to get the thermal focal length coefficients is presented.

考虑热致双折射效应，利用等效谐振腔的g参数坐标图进行分析，推导了三种不同腔型结构下径向热透镜焦距和切向热透镜焦距系数的计算方法，分析并得出了测量热透镜焦距系数所需的腔型结构。

Genuine diamonds scatter light as it passes through them, making the newsprint look a little burry.

真的钻石在光线通过时会发生折射，而使报纸上的字体看不太清楚。

An object with a flat surface and canted at an angle of 45° to the transducer axis refracts the ultrasonic pulse in an angle of 90°.

一个平面物体，然后在45度角斜轴传感器折射成90度角的超声脉冲。

Finally, we mention the catadioptric system of Schupmann's medial .

最后，我们谈谈舒曼的 medial 反折射系统。

This week at the Chabot Space Science Center in Oakland, California, where on a clear night you can scan the heavens on this 20-inch, 1915 vintage refractor telescope.

本周在加州奥克兰的Chabot宇宙和科技中心，你可以在晴朗的夜晚通过这个20英尺的1915年制造的折射望远镜来观看夜空。

Two different ways of sample tilt were used in CD messurements to prove that the linear dichroism and birefringance had no effect on CD signal of cholesteric helices of the liquid crystal.

分别用两种方法旋转玻片进行CD测试，结果证明线性二向色性分量和双折射分量对胆甾层片螺旋的CD信号强度没有大的影响。

This can result in a splitting ofwavelength-dependent loss band and make the codirectional mode coupling condition (of the fundamental core mode into cladding modes) be different at two principal input polarizations.In a PM-LPG fabricated with a PMF having relatively small birefringence , the adjacent resonant dips (slow-axis and fast-axis resonant dips) resulting from the two principal input polarizations have identical cladding mode order and the wavelength separation between them is several nanometers

这可能导致分裂的ofwavelength-dependent损失，使codirectional乐队的耦合条件(模式基本核心人才培养模式为层模式)是不同的两种主要的输入波在PM-LPG捏造和具体情况有相对较小的双折射，相邻的谐振(slow-axis和fast-axis引起共振蘸)的两种主要模式有相同的输入波的波长层顺序和他们之间的分离是几奈米的图案

Three seismic waves illustrated in this paper refer to reflected compressional wave, refracted compressional wave and Rayleigh wave.

3种波指的是反射纵波，折射纵波，瑞雷面波。

Here in our department, the Geometric-Optics is a 3-credit, 3-hour per week, one-semester course. There are three consecutives parts in the one-semester lecture:The 1st part :the nature of light,the related theorems about reflection and refraction, image formation.

本系之几何光学是一学期、三学分、每周三小时的课程，教学内容大致包含以下三部份：一、介绍光的性质、在介面上反射、折射之有关定理、成像的原因及应用。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。