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

基本上，每个小方块每平方厘米有 6000 个。

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

这就是工作的基本原理。

So these are all basically full of retroreflectors, right?

所以这些基本上都是，吗？

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

但是 3M 将这个原理一步发展，创造了全立方。

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·阿姆斯特朗留在月球上的回复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 公司实际上开发了这些元件，它们是具有不同折率的逆。

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，当在干燥条件下理想工作时，一旦水覆盖在其上，它们的折率就会降低到 1.33 的比例。