Basically, each of these little squares has 6,000 retroreflectors per square centimeter.

基本，每个小方块每平方厘米有 6000 个反射器。

And that is a basic 101 of how a retroreflector works.

就是反射器工作的基本原理。

So these are all basically full of retroreflectors, right?

所以些基本都是反射器，对吗？

But 3M took that principle even further with a full-cube retroreflector.

但是 3M 将个原理一步发展，创造了全立方体反射器。

Although, I suppose the retroreflector left on the moon by Neil Armstrong does qualify as a shiny object.

尽管我可以确定尼尔·阿姆斯特朗留在的回复反射器的确符合了亮晶晶的标准。

To combat this rain visibility problem, 3M actually developed these elements, which are retroreflectors that have different refractive indices.

为了解决雨天能见度的问题，3M 公司实际开发了些元件，它们是具有不同折射率的逆反射器。

So where the retroreflectors act ideally under dry conditions, as soon as water is on top of them, their refractive index is lowered by a ratio of 1.33.

因此，当反射器在干燥条件下理想工作时，一旦水覆盖在其，它们的折射率就会降低到 1.33 的比例。