So because we're feeling a stronger attractive force from the nucleus, we're actually pulling that electron in closer, which means that the probability squared of where the electron is going to be is actually a smaller radius.

因为我们能感到来自原子核,的更强的吸引力，我们实际上会将电子拉的更近，那意味着电子运动的,概率半径是,事实上是一个更小的半径。

麻省理工公开课 - 化学原理课程节选

Remember, the wall is pulling to the left with the same force.

记住这个墙也要向左用相同的力拉它

耶鲁公开课 - 基础物理课程节选