注意物体上光线的反弹和反射。
Notice we have light bouncing and reflecting off our objects.
这是因为光源越广，射在物体上光线的方向就越多，这会起到增加场景中的照明、减少阴影的作用。
This is because, with a broad source, light rays hit your subject from more directions, which tends to fill in shadows and give more even illumination to the scene.
地面的领域将是半透明的玻璃铺装，照明，晚上光线的路径，过滤日光，营造软下面的空白处漫射光。
Areas of the ground will be of translucent glass paving, lighting a path in the evening light and filtering daylight, and creating a soft diffused light for the space below.
伦敦癌症研究所的一个团队发现如果女性的卧室晚上光线“足以看清整个卧室”的话，她们的腰围会增加。
A team at the Institute of Cancer Research in London found women had larger waistlines if their bedroom was "light enough to see across" at night.
推导过程中假设物面位置不随温度发生变化，并且忽略分离薄透镜组中各组分上光线入射高度随温度的变化。
It is assumed that the object distance and the incident height of each lens do not change with temperature.
事实上光线不好的时候拍摄照片就是要这样做——寻找有趣的光线然后思索如何利用光线拍摄出一幅有趣的照片。
Actually, that's what we do in available-light photography: look for the interesting light, then figure out how to use it to make an interesting picture.
利用光波面和光波法线面的曲线方程，得出了光波面上光轴角和光线轴角的表达式。
The expression of optic axial Angle and ray axial Angle on light wave plane can be obtained by using the curve equations of the wavefront of light wave and normal plane of light wave.
利用光波面和光波法线面的曲线方程，得出了光波面上光轴角和光线轴角的表达式。
The expression of optic axial Angle and ray axial Angle on light wave plane can be obtained by using the curve equations of the wavefront of light wave and normal plane of light wave.
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