光学

• Optical depth and optical path are often confused in the literature .
  文献中光学厚度和光程时常混淆。
• A lens is an optical system including two refracting surfaces .
  一个透镜是包含两个折射面的光学系统。
• Schlieren photography is a very sensitive optical arrangement .
  条纹照相术是一种非常灵敏的光学技术。
• Mirrors attached to the rollers form part of an optical system .
  装在圆筒上的小镜是光学系统的一部分。
• The classical path would then correspond to a ray as in optics .
  所以经典路径就与光学中的光线相对应。
• The technique requires critical and difficult optical alignments .
  这种技术要求严格，并且光学调整困难。
• As the optical mass of water vapour increases, so does the solar absorption .
  随着水汽光学质量的增加，太阳吸收也增加。
• Flatness can be determined by covering a surface with an potically flat glass .
  用一光学平面玻璃覆盖一个表面，可以测量平整度。
• These are modern materials having greater uniformity and higher optical sensitivity .
  这些是均质性更好、光学灵敏度更高的现代材料。
• We first take up the subject of optic ray propagation through a variety of optical media .
  首先研究光束通过各种光学介质的传播问题。