π像座桥连接着圆(球)的各种几何量.半径、圆周长、圆面积、球面积、球体积等由此及彼哪个能不过这座桥而绕过去呢?当你学到单摆公式: 时,没感到惊奇吗?怎么物理量之间也要靠π这座桥连系?是的!此话一点不假,这座桥不但有,而且广泛地存在着.这么说吧,在物理王国里,几乎所有较深层次 The π bridge is connected to various geometrical quantities of the circle (ball). Radius, circumference, circle area, sphere area, sphere volume, etc. Which one can bypass this bridge? When you learned Pendulum formula: Didn’t it surprise you? How does the physical quantity also depend on this bridge? Yes! This is true, this bridge is not only there, but also exists extensively. Let’s say this, In the physical realm, almost all the deeper levels