The short wave signals bounce off the ionosphere that surrounds the Earth,back to the ground and then back to the ionosphere.

VOA: special.2010.12.08

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。

麻省理工公开课 - 化学原理课程节选

So, we can think about what is it that we would call the ground state wave function.

我们来考虑一下,基态的波函数，是怎么样的。

麻省理工公开课 - 化学原理课程节选

So this is our complete description of the ground state wave function.

所以这是我们,对基态波函数的完整描述。

麻省理工公开课 - 化学原理课程节选

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。

麻省理工公开课 - 化学原理课程节选