正折射 meaning in Chinese
positive refraction
Examples
- Natural materials all have a positive refractive index
所有的自然物体都有正折射指数。 - In normal optical fibres made from materials with positive refractive indices , this makes the effective thickness of the cable greater than its physical thickness
在正常的用具有正折射指数制作的多个光导纤维中，这种情况会让电缆的有效厚度高于它的实际物理厚度。 - Dr hess envisages a ray of light travelling down an optical fibre made from two materials : a core with a negative refractive index and an outer sheath with a positive one
赫斯博士构想出一个画面，即一道光正穿越于一个由两种材料制作的光导纤维，一种是具有正折射指数的纤维核，另一种则是具有正折射指数的外围。 - But what if a material could be built that had a negative refractive index , so that light was bent in the opposite direction and an object appeared to be farther from the surface than it really was
但是，要是能建立起一种具有正折射指数的物体，以致于光会朝着相反的方向折射，并且置于水底的物体看起来会比实际更远，那情况又会怎样？ - But materials that have negative refractive indices have already been made ( at least for light with wavelengths that are too long to be visible ) , so the idea could be tested fairly easily
但是，具有正折射指数的材料已经被制作出来（至少用于对那些具有大波长而无法看到的光进行试验的材料已经制作出） ，因此这种构想的试验不会大费周折。