The technique can image variations in what is known as the refractive index of air - in essence, the speed of light in a given medium.
这项技术能够使空气折射率图形化-本质上就是特定介质下的光速。
2
The parameters of the optical slab glass waveguide (refractive index and thickness of thin film) were measured by a new technique for using the prism coupler, i. e., leaky mode method.
由使用棱镜耦合器的一种新技术即漏模法，测量了平板玻璃光波导的参数(薄膜的折射率和厚度)。
3
Liquid flow field in a tube with a combination of a stenosis and a bifurcation was measured using refractive index matching technique.