The only evidence was cut into a tree and a fence: the letters C-R-O and the word Croatoan,C-R-O-A-T-O-A-N.

VOA: special.2009.08.17

So when we talk about a wave function squared, n l m he wave function, any one that we specify between n, l and m, at any position that we specify based on r, theta, and phi.

一个波函数,的平方时，对特定,特定位置r，theta，phi波函数，取平方,如果我们取平方。

麻省理工公开课 - 化学原理课程节选

So we know that we can relate to z effective to the actual energy level of each of those orbitals, and we can do that using this equation here where it's negative z effective squared r h over n squared, we're going to see that again and again.

我们知道我们可以将有效电荷量与,每个轨道的实际能级联系起来，我们可以使用方程去解它,乘以RH除以n的平方,它等于负的有效电荷量的平方,我们将会一次又一次的看到它。

麻省理工公开课 - 化学原理课程节选

"That's kind of fun!" "What's your name?" "Broklin,B-R-O-K-L-I-N."

VOA: special.2010.04.30

But the nymphs in all of their sensuous beauty, with "flow'r-inwov'n tresses," they have to experience the same fate.

但是年轻女神很美丽，但头发被扯断了“,她们不得不经历同样的命运。

耶鲁公开课 - 弥尔顿课程节选

The address is u-s-a-l-e-a-r-n-s dot o-r-g.

VOA: special.2009.01.15

He urged revival of the slave-trade in the late 1850s, and he developed a theory of what he called warranteeism--w-a-r-r-a-n-t-e-e-I-s-m.

他促成了十八世纪五十年代后期,奴隶交易的复苏,还自己发明了一套理论,名为抵押品主义

耶鲁公开课 - 美国内战与重建课程节选

That's m-a-c-a-r-o-n.

VOA: special.2010.04.12

It turns out there's a new function strlen S-T-R-L-E-N that you probably have not used yet called strlen, S-T-R-L-E-N, programmers early on and still like to be succinct but communicates sufficiently what they mean.

结果这里有个新的函数,你可能没有使用过，叫做，早期的和现在的程序员喜欢简洁地,但是能充分的传达他们的意思。

哈佛公开课 - 计算机科学课程节选

b The repulsive term goes as some constant lower case b divided by R to the n. N is not the quantum number.

这种斥力很想一个固定的小写字母,被R到n分开的话，N不是量子数。

麻省理工公开课 - 固态化学导论课程节选

There was a huge old insurrection called the Fronde, f-r-o-n-d-e.

有一起被称为投石党运动的起义

耶鲁公开课 - 欧洲文明课程节选

The conflictedness that Milton is encapsulating here is probably most intense in the last lines of this wonderful stanza: / "With flow'r-inwov'n tresses torn / the Nymphs in twilight shade of tangled thickets mourn."

弥尔顿在这想要化解的冲突,可能在这一段中最激烈：,少女的头发被扯断/,黄昏时在杂乱的灌木丛中哀叹“

耶鲁公开课 - 弥尔顿课程节选

So instead of being equal to negative z squared, now we're equal to negative z effective squared times r h all over n squared.

这里不再等于-z的平方，现在我们等于-有效的z的平方,乘以RH除以n的平方。

麻省理工公开课 - 化学原理课程节选

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

R And we abbreviate that by calling it r, l by two quantum numbers, and an l as a function of little r, radius.

我们把它简称为，两个指定的量子数n和，它是半径小r的函数。

麻省理工公开课 - 化学原理课程节选

R is a function of n and takes on discrete values.

在这儿r是n的函数，取的是不连续的值。

麻省理工公开课 - 固态化学导论课程节选

And that's going to be equal to negative z effective squared times r h over n squared.

有效的z的平方,乘以RH除以n的平方。

麻省理工公开课 - 化学原理课程节选

e The charge on the anion times minus e, so there is the minus e squared, 0R0 and divided by 4 pi epsilon zero r naught, because now I am evaluating this function at r naught, one minus one over n where n is the Born exponent.

阴离子的电荷乘以，因此会有-e的频繁，除以4πε,因为现在我用r圈评估这个函数，1-1/n，n是波恩指数。

麻省理工公开课 - 固态化学导论课程节选

So the square root of n squared r e over r h.

这里的n值是什么呢？

麻省理工公开课 - 化学原理课程节选

So, we can get from these energy differences to frequency h by frequency is equal to r sub h over Planck's constant 1 times 1 over n final squared minus 1 over n initial squared.

所以我们通过不同能量,得到不同频率，频率等于R下标,除以普朗克常数乘以1除以n末的平方减去。

麻省理工公开课 - 化学原理课程节选

When n equals infinity, r equals infinity.

当n为无限大时，r也为无限大。

麻省理工公开课 - 固态化学导论课程节选

We also know how to figure out the energy of this orbital, and we know how to figure out the energy using this formula here, which was the binding energy, -Rh which is negative r h, we can plug it in because n equals 1, so over 1 squared, and the actual energy is here.

我们知道如何算出,这个轨道的能级，而且我们知道如何,用这个公式,算出能量，也即是结合能，等于，我们把n等于1代进来，所以除以1的平方，这就是能量。

麻省理工公开课 - 化学原理课程节选