So we saw that our lowest, 1 0 0 our ground state wave function is 1, 0, 0.
我们看到最低的,或者基态波函数是。
We know how to write that in terms of the state numbers, 1 0 0 so it would be 1, 0, 0, because we're talking about the ground state.
我们知道如何去,写出态数字,它是,因为我们在讨论基态,我们总是讨论基态除非。
That's correct. So her answer was, if it was a full parabola, then we know it would've been at the ground before I set my clock to 0.
她说,如果运动轨迹为一条完整的抛物线,那么它在我们所设定的零时刻之前,就已经落地了
When does it hit the ground" is "When is y=0"?
何时落地"也就是"何时位移为零"
If that's all it knows, then in that scenario there is no building or anything else; it continues a trajectory both forward in time and backward in time, and it says that whatever seconds, one second before you set your clock to 0, it would've been on the ground.
如果是这样,在那种模式下,没有楼房或者别的什么,物体的运动轨迹可以沿时间可以向后延伸,也可以向前延伸,不管时间取什么值,在零点前一秒时,物体就在地面上
For example, if t* is the time you hit the ground, then t* satisfies the equation h - 1/2 g ^2 = 0.
例如,如果在 t* 时刻落地,那 t* 就满足等式 h - 1/2 g ? ^2 = 0
If you call that your origin, your y0 will be 0, but ground will be called -15.
如果你取楼顶为原点,你的y0就等于0,但是地面就要标记为-15
l But now we need to talk about l and m as well. So now when we talk about a ground state in terms of wave function, we need to talk about the wave function of 1, 0, 0, and again, as a function of r, theta and phi.
但我们现在需要讨论,和m,现在当我们讨论,波函数的基态时,我们讨论的,是1,0,0的波函数,同样的,它也是r,theta和phi的函数。
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