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

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

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·阿姆斯朗留在月球的回复反射器的确符合了亮晶晶的标准。

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

但是 3M 将这个原理进一步发展，创造了全立方体反射器。

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

，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.

这就是反射器工作的原理。

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。

So these are all basically full of retroreflectors, right?

所以这些都是反射器，对吗？