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but um, yeah, we e-mail, we exchange e-mails a bunch and
但是，呃，是的，我们发电子邮件，我们用电子邮件沟通了几次，
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Well, we would have to H+ have one of these hydrogen atoms go to an H plus, * plus an electron, right? **H --> H+ + e-** So, now we have a hydrogen ion here.
我们先要让,一个氢原子变成氢离子，加上一个电子，对么*,我们现在有一个氢离子了。
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And this is Erwin Schrodinger, and this is the equation that he put forth where we have hat psi being equal to e psi.
这就是埃尔文？薛定谔，在这个方程中,他提出,所以，让我们来解释一下。
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H- *H + e-> H-* And, clearly, we can't do both.
到一个电子生成*,但我们发现我们不能同时做到两个。
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That file was electronic message, so suddenly in about 1971, we had e-mail. So an e-mail was pretty much the major use of the internet for the next 20 years.
那种文件就是电子消息，如此突然的，约在,1971年，我们有了电子邮件，电子邮件,基本上是此后20年互联网的主要运用形式。
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We'v e shown that learning optimism prevents depression and anxiety in children and adults, roughly halving their incidence over the next 2 years.
研究证实，乐观可帮助儿童和成人,预防抑郁和焦虑，使未来两年的发病率降低一半。
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Then the next thing in the loop, we're going to enter a nested loop and say for every college in the list e, we're going to print the name of the college.
循环中的第二件事，是进入一个嵌套循环,这个嵌套循环将数组中的，大学名字显示出来。
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We think we understand when we see the past from a historical standpoint, i.e., place ourselves in the historical situation and seek to reconstruct the historical horizon.
当我们从历史的角度看待过去，我们以为自己理解，也就是说，把自己放在历史的条件下,重新构建历史的视角。
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W.A.S.T.E. We're not allowed to say "waste," remember.
记住，我们不被允许说“废物“
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All right, so there we are, but is this, from D to E, a half step?
好了,明白了,但这里,从D到E,是个半音级吗
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e We also have e, which is going to be the charge on the electron.
这是电子的质量，我们还有。
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And we can simplify this expression as saying negative e squared over 4 pi, epsilon nought r squared. Epsilon nought is a constant, it's something you might see in physics as well.
也会遇到它,在这里，你可以就把它,理解为一个转换系数,我们需要做的。
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So I think it's important that they know some other things that the children in Japan are doing now. In fact, we have Japanese e-pals, which is really a great deal of fun.
我认为让孩子们知道,日本小孩所做的别的事情也很重要,实际上，我们有日本网友，这给我们带来了很多乐趣。
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delta E What we do is ask ourselves what is the delta E?
我们做的是问问我们自己，什么是？
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So, an electron has a charge of negative e, we've written here and the nucleus has a charge of positive e.
我们写在这，原子核带正e的电荷,我们看到作用力。
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We notice that the value of E at r naught is negative, as it should be. It's a negative number.
我们主要到在r圈时E的值为负，和它本来的值一致，是一个负数。
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So we can figure out the energy of each photon emitted by our UV lamp by saying e is equal to h c over wavelength.
所以我们可以计算出,每个从紫外光源射出的光子,也就是e等于h乘以c除以波长。
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This e term here is the energy, or in our case when we talk about an electron in a hydrogen atom, for example, the binding energy of that electron to the nucleus.
这里的“E“是指能量，或者在我们谈论一个,氢原子的电子时，举例来说，是电子对于原子核的结合能。
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We said that the difference between deference with an e and differance with an a can't be voiced.
我们说过，一个字母e的迟延,和a的延异之间的差别是无法表达出来的。
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So, let's go ahead and define our variables here, they should be familiar to us. We have the mass, first of all, me m is equal to m e, so that's the electron mass.
让我们继续定义这些常数,我们对这些应该都很熟悉了，首先，我们有质量，m等于。
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Again, we see that e is a function of n.
我们又一次看到，E是n的一个函数。
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That's good, then we go D up to E; that's another whole step.
很好,然后从D升到E,又是一个全音级
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And there's actually a way that we can make predictions here, and what I'll tell you is molecular orbital theory predicts that h e 2 does not exist because it's not stabilized in terms of forming the molecule.
其实我们有一种办法可以做出预测，我要告诉你们的是分子轨道,理论预测He2不存在,因为它形成分子不稳定。
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So for sodium, again, we can write n e 3s1 and then 3 s 1.
对于钠，再一次,我们可以写Ne然后。
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And out here we have the charge on the electron as simply equal to e.
而原子外层的电子,只是电量和e的电量相等。
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