光线

Refraction regularity of extraordinary ray in uniaxial crystal with arbitrarily oriented optical axis;2. In the case of optical axis of uniaxial crystal being parallel with the incident plane, the angle of refraction of extraordinary ray are calculated by using Fermat's principle.

在单轴晶体的光轴与入射面平行的情形下用费马原理计算非寻常光光线的折射角，然后就怎样定义非寻常光作些讨论，最后在单轴晶体的光轴任意取向的普遍情形下给出计算非寻常光光线折射方向的公式。

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。

Antihalation Backing: A dark layer coated on or in the film to absorb light that would otherwise be reflected back into the emulsion from the base.

在胶片上或胶片中涂的一层黑色涂层，以吸收光线，否则光线会从片基反射到乳剂上。

This paper discussed the algorithm of horizontal obligue axonometric projection of shade and shadow on spheric surfaces in light ray and projection directions.

对于任意方向的光线，作图很难完成。本文给出了任定投影方向，任定光线方向，圆球及其阴影的水平斜轴测投影的算法。

A beam is a bundle of light rays.

光线是一条表示光束传播方向的直线，光束是由一束光线组成的。

The rays go through a series of convolutions called the conoid of Sturm.Midway between the two focal lines , the rays form a circlecalled the circle of least confusion.

7光线经过一系列的聚散形成 Sturm 光锥，在两条焦线之间，光线形成一个圆斑，称为最小弥散圆。

Compared with the light equation for cylindrical lens, the equation for conelens is much more complicated.

柱透镜在近轴平行光入射时，光线的振幅、相位、周期保持不变，而锥透镜的三者均发生变化，而且求解锥透镜的光线方程也比圆柱透镜复杂得多。

Light strong fish will because of ultraviolet ray excessive death too, light weak fish body have more unable to show colors also too.

光线太强鱼会因紫外线过量死亡，光线太弱鱼体的颜色又无法表现出来。

As to straight texels, we study the local relative coordinate equation of a light line in a texel coordinate system, and the concrete shape of light line when mapped to texel space, so that quick check could be made for the intersection of light line with hairs. This becomes the straight texel rendering method of global smoothness for all hairs and can be used to long hairs.

对于直形纹元，研究了直纹元体内光线的局部相对坐标方程，和影射到纹元空间后的具体形状，并给出拟合纹元空间中光线曲线的方法以及它投影到纹元底面的曲线的形状，以便使用快速方法判断光线与头发的相交情况，进而给出在整体上具有头发光滑效果的直纹元的绘制方法。

But if we are trying so simulate "blueish light from the sky", then a point that is exposed to a lot of the sky will receive more light, than a point that is behind a bunch of other objects that are blocking (i.e."occluding") the skylight.

但是实际情况下，如果我们试图模拟&天空中的微蓝色光线&，那么一个位置更加暴露在天空下的点会接受到更多的光线，而一个隐藏在一堆别的物体下的点，（也就是说&被遮挡住&的点），会完全接受不到光线。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了