The formal definition is that the gravitational potential energy at a point P is the work that I, Walter Lewin, have to do to bring that mass from infinity to that point P.
形式定义就是,它在点P的重力势能,等于我，将物体从无穷远处,移动至点P所做的功。
It is this that allows us to do the trick of printing out the parameter "p" and then passing it to the "rest" function to continue the computation, seen here in the definition of the "Bind" method.
这样话，就可以让我们能取巧打印出参数“p”并接着把它传递给“rest”函数继续进行计算。
Functional integration successfully entered physics as path integrals in the 1942 Ph. D. dissertation of Richard P. Feynman, but it made no sense at all as a mathematical definition.
职能的综合在理查页范曼的1942哲学博士长篇论文成功进入物理学作为道路积分，但是它确实没有意义作为一个数学定义。
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