在韩非的著作中记载着一个发生在2000多年前的故事:有人请画匠画画,三年后,画匠完成的“作品”却是一个大木块。那人很不高兴:“你的画在哪儿呢?”画匠说:“先修座不透光的房子,在房子的一侧开一扇大窗户,将木块嵌在窗上。太阳一出,就可在对面的墙上欣赏美妙的画了。“事实果真如此,不过,遗憾的是,图像全是倒立的。现在我们都知道,这是物理上的“小孔成像”原理,房子外的景象通过小孔,在墙上形成了倒立的像。 In Han Fei’s works, a story that happened more than 2,000 years ago is recorded: Someone asked a painter to paint, and three years later, the “work” completed by the painter was a large piece of wood. The man was very unhappy: “Where is your painting?” The painter said, “Fix the opaque house first, open a big window on one side of the house, and put a block of wood on the window. You can enjoy wonderful paintings on the opposite wall. ”The facts are true, but, unfortunately, the images are all inverted. Now we all know that this is the principle of “hole imaging” in physics. The scene outside the house passes through a small hole and forms an inverted image on the wall.