So kind of that strange cursive r, and our n final is 2, R so 1 over 2 squared minus n initial, so 1 over 3 squared.

因为我们可以在这里用到它，这个有点奇怪的花体。

麻省理工公开课 - 化学原理课程节选

So we can't actually see any of that, it's too high energy for us to see. So everything we see is going to be where we have the final energy state being n equals 2.

所以我们是看不见它的,它能量太高了，我们能看见的,都是终态等于2的情况。

麻省理工公开课 - 化学原理课程节选

Absorption is just the opposite of emission, so instead of starting at a high energy level and dropping down, when we absorb light we start low and we absorb energy to bring ourselves up to an n final that's higher.

吸收就是发射的逆过程,与从一个高能量到低能量不同，当吸收光时，我们从低能量开始,吸收能量到一个更高的能量。

麻省理工公开课 - 化学原理课程节选

These days the inverted U has turned into something closer to an italicised N, with the final stroke pointing menacingly upwards.

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