So our skeleton tells us that carbon is in the middle, so we'll put the h on one side, and the n on the other side there.
我们的骨架告诉我们碳原子应该放在中间,因此我们把氢原子放在一边,把氮原子放在另外一边。
And that in the case of constant volume, U in this case that's my delta u, and then I'll H add my little delta n term to get delta H.
这是在等体情形下,此时的到的是Δ,然后我可以加上Δn的项来得到Δ
They're not going to want to add on another electron, because then it'll have to jump a very large energy level go from n equals 2, to n equals 3, and n equals 4, and so on.
它们不愿意增加另外一个电子,因为这会让它们跳到一个非常高的能级上去,依次是,n,等于,2,3,4,等等。
It's going to weigh too much, we don't need to look at it. But it'll still be order 2 to the n.
我们没必要去看它,但是它还是要遵循2到n的顺序。
I mean, you'll play with it in great-- with great delight this semester, you will see that backslash N is the standard in any text file for creating what we know as new line characters.
我是指,这学期,你们会很高兴-,和它打交道,同时你们也会看到,在任何文本文件里,反斜杠n已经是,换行的代名词了。
In-dig-nant isn't it: indignant. Indignant angels, and we'll see why in a second.
n-dig-nant,愤怒天使,接下来我们探讨下
If you start with only one, you have two pieces of DNA, then you'll get 2 to the Nth fragments after N cycles because each cycle you're doubling the number.
如果你从仅仅一个DNA开始,你有两条DNA链,经过N次循环后,就得到二的N次方个DNA片段,因为每次循环都使其数量翻倍
And if you ask the TAs in recitation tomorrow, they'll tell you that you see a lot of n log n algorithms in computer science.
如果你明天在复习课上问助教的话,他们会告诉你在计算机科学中,存在着非常多的n,log,n规模的算法。
So what we'll do is this problem here, which is let's calculate out what the wavelength of radiation n would be emitted from a hydrogen atom if we start at the n equals 3 level and we go down to the n equals 2 level.
我们来做这个问题,让我们来计算一下,从n等于3到,等于2能级氢原子辐射的波长是多少。
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