小數後13兆位…… 有甚麼意義呢？ http://buzzorange.com/techorange/2016/06/01/nasa-said-only-40-digits-of-pi-we-could-know-size-of-universe/

小數後13兆位…… 有甚麼意義呢？
http://buzzorange.com/techorange/2016/06/01/nasa-said-only-40-digits-of-pi-we-could-know-size-of-universe/