一次,朋友问我:如果给你一张足够大的纸,让你不停地对折下去,当你把这张纸对折到51次的时候,它所达到的厚度是多少呢?我先后猜:一个人的厚度,一幢楼高的厚度,一座山高的厚度……朋友听后,均摇头.那它到底有多厚呢?我问.它的厚度大概是地球到太阳之间的距离!朋友说.一张薄薄的纸.对折51次后,就能从地球叠到太阳上去?我怎么也不敢相信. Once, a friend asked me: If you give you a large enough paper, so you keep on folding, when you fold the paper folded 51 times, it reached the thickness is what? I have guessed: A person’s thickness, a height of a building height, a height of a mountain ... Friends listen, shook his head .How it in the end how thick it? I ask.Its thickness is probably the distance between the earth and the sun! Friends Say a piece of thin paper.While folded 51 times, will be able to stack from the earth to the sun? How can I not believe it.