So the moral here, again, is whenever you're doing an implementation of a simulation, you do need to have some underlying theory about the model.
所以这里的寓意还是,不管你在做什么东西的仿真程序,你需要有一个,模型的底层程序。
We're making a lot of very strong assumptions here, but nevertheless, it's going to be instructive to look at this model.
我们做了很多强制性的假设,但无论怎样,这个模型对我们仍然具有指导意义
Now later, we may decide to abandon this model, but for the moment let's accept that.
后来我们考虑抛弃这个模型,但现在我们暂且用这个模型来做我们的程序。
So, someone says I didn't understand what he was talking about at the end of the last lecture when he was doing the Bohr model.
所以,有人会说,我不理解老师,在上节课末尾说的内容,当他在做玻尔模型的时候。
So, what he did was kind of impose a quantum mechanical model, not a full one, just the idea that those energy levels were quantized on to the classical picture of an atom that has a discreet orbit.
还不是完整的,只是这些能级,是量子化的概念,作用到原子有分立轨道的经典原子模型上,当他做了一些计算后,他得到有个半径,他算出来。
The other is the health model: let's pursue my passions,what I love to do.
另一种是健康模型:,让我们追求激情,追求喜欢做的事。
He knew the same thing that had been observed by that point.
所以他所做的就是,把一个量子力学的模型。
And, he conducted experiments to test the plum pudding model.
他做了一个实验,枣糕布丁模型。
So what we're going to do now is we're going to relax some of the assumptions of this Bertrand model and it's going to do two things for us.
所以现在要做的是,去放宽,伯川德模型的一些假设,它将给我们带来两样事情
Now, what I want to do now, what I want to is, periodically in the class and we have a model up there and we've got to analyze it.
接下来,我想要做的事,定期地在课堂上,建立模型然后分析这个模型
You could put everything on this line, I think there may be, I'm not really allowed to do this on this model, the one thing I can't do is, part of the truth is that Bud Light might be down here somewhere but I'm not allowed to do that.
你可以把任何东西放在这条线上,我想那也许是,我实际上并没有权利在这个模型中这么做,我不能做的是,起码百威淡啤酒应该在这上的某个位置,但我没权利这么做
And what he came out with when he did some calculations is that there's the radius that he could calculate was equal to this number a sub nought, which is what we call the Bohr radius, and it turns out that the Bohr radius happens to be the radius most probable for a hydrogen atom.
等于这个a0的值,我们叫它波尔半径,而,波尔半径恰好是,最容易,找到电子的地方,我们对波尔模型,不做过多的解释,这是因为。
So you recognize patterns and then develop a model, and most desirably a quantitative model A quantitative model that explains the observations, obviously.But what Mendeleev did was he came up with a model that not only explained what we observed.
所以你们得到这些模式,发展成一个模型,和最令人向往的定量模型,一个定量模型明显地解释所有的观察结果,但是门捷列夫做的是,他提出的模型不仅解释了,我们观察到的东西。
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