So notice a difference in these structures, is this has an n h bond whereas this has an o h bond.

注意它们之间的有一点不同，那就是一个有氮氢键,而另一个有氧氢键。

麻省理工公开课 - 化学原理课程节选

We can think about the Lyman series, which is 1 where n equals 1. We know that that's going to be a higher energy difference, so that means that we're going to be in the UV range.

我们可以来看看Lyman系,也就是n等于,我们知道它的能量差更大,所以它在紫外光区内。

麻省理工公开课 - 化学原理课程节选

PROFESSOR: Good. So, it's going to be in 3, because that's the shortest energy difference we can have, 3 those 2 are inversely related, so it must be n equals 3.

教授：好，是3，因为它的能量差最小，红色的是我们能看到的，所以一定是n等于。

麻省理工公开课 - 化学原理课程节选