Light comes through, it bounces back off the layers; it's called thin-film interference. Imagine being able to self-assemble products with the last few layers playing with light to create color.
光线透进来，被好几层反弹回去。 这叫做薄膜干涉。 想像有一天可以做出自我组装的产品 产品最外面的几层操作光线来产生颜色