郑复光(1780—约1853)：清代著名科学家。

字元甫、瀚香，安徽歙县人。

精通数学、物理与机械制造。

1846年写成 镜镜冷痴　5卷，集当时中西光学知识大成。

在完成此书的基础上，制造了中国最早的一台测天望远镜。

另著有 郑元甫札记　（手抄本）、 郑瀚香遗稿　（手抄本）、 安徽通志稿　有传。

光与色　（ 镜镜痴　节选）郑复光目睹物而知形，然形非色不见；色非光不见。

故色必资乎光；画资乎日，夜资乎月星与火。

光盛则色显，光微则色隐。

色依光以现其形：色浓则明，色淡则藏；色立乎异，则相得益彰，色傍乎同，则若存若亡。

We know the shape of a thing when we see it, but its shape will not be seen if it has no color.

The color of a thing will not be seen if there is no light.

So the color for us to see has to depend on light, just as the day on the sun; or the night on the moon and stars, and fire.

When the light is strong, the color becomes apparent; and when the light is dim, the color becomes obscure.

A thing shows its shape by its color: it is conspicuous when its color is deep; it is invisible when its color is light.

There will be a striking contrast if the colors of the things are quite different while their existence will not be felt if their colors are almost the same.

【双语诗歌翻译|郑复光-光与色　查看网站：[db:时间]】