I'm asking what's the tangential speed as it moves along the circle?

它在做圆周运动时,切向速度是多少

耶鲁公开课 - 基础物理课程节选

So in hydrogen atom a, I'll depict that here where the nucleus is this dot, and then the circle is what I'm depicting as the wave function.

在氢原子A里，我在这里把原子核画成一个点，这圆就是波函数。

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