夏季,我们常会看到一些人戴着一副墨镜,用以减少进入眼睛的光线,从而达到保护眼睛的目的.仔细观察,我们常会看到有的墨镜看上去就好像涂了一层银色的金属,几乎如同镜子一样.有人会问:戴上它还能看清楚周围的物体吗?要想弄清楚其中的光学原理,就应从墨镜的特殊结构入手.准确地说,所有的眼镜都既可以反射光,又可以透射光,只是被反射出来的 In summer, we often see some people wearing a pair of sunglasses, to reduce the light into the eyes, so as to achieve the purpose of eye protection.When careful observation, we often see some sunglasses looks like a layer of silver metal , Almost the same as the mirror.Some people may ask: wear it can also see the objects around it? To understand the optical principles which should start with the special structure of the sunglasses.Really, all the glasses can reflect Light, but also transmitted light, but was reflected