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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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I can't remember their names either, but their last names begin with "R" and "S" and "A".
我也记不住他们的名字，但他们的姓氏是由“R”，“S”和“A”开头的。
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And that's what we label as r sub m p, or your most probable radius.
或者最可能半径，这是你找到。
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R So let's get rid of R in this expression here.
利用这个式子，我们就可以消去。
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Muscovy had already conquered the Volga basin in the 16th century, where the nomadic Tatars were, T-A-T-A-R-S.
6世纪时莫斯科公国已经征服了伏尔加盆地,游牧鞑靼民族住的地方
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At infinity, there's no stored potential energy, and it drops off more and more negative as one over R.
在无限远处，没有储存的势能，并且它向负方向减少，当距离超过R时。
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Mathematically, it's done by taking the expression for R and differentiating everything in sight that can be differentiated as vector t.
从数学上看是这样的,写出 R 的表达式,并对所有可以进行矢量微分的部分,对时间 t 求微商
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There's also this backslash R. Anyone know what backslash R is?
这还有\r，谁知道\r代表什么？
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g has to be less than r for this to make sense because if g--if it's growing faster than the rate of interest, then this infinite series will not converge and the value would be infinite.
必须小于r才行得通,因为如果g比利率涨的还快,那么这个无穷序列就不会收敛,价值就是无穷了
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because some sounds, like the 'R's here are very different from Americans and from other languages.
因为一些发音听起来，比如“R”跟美式英语，或者其他语言非常不一样。
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It was found in strain R, a particular strain of E.coli, and it was the first one found, There's a nomenclature that's evolved for this.
酶被发现于R菌株,大肠杆菌中一种特别的菌株,又是被发现的第一种内切酶,有一种专门为此制定的命名法
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So, we can do that by using this equation, which is for s orbitals is going to be equal to dr 4 pi r squared times the wave function squared, d r.
用这个方程,对于s轨道，径向概率分布,4πr的平方,乘以波函数的平方,这很容易理解。
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R/Cv OK, so that means that this is really instead of -1 R over Cv. it's really gamma minus one.
现在,变成了γ
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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。
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RT2 So it's R T2, right, now we're at a lower temperature times log the log of V4 over V3.
等于，这时温度比刚才低,乘以。
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So it's minus R T1 dV over V, right?
那么这是-RT1，dV/V，对吧？
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