Let's re-draw this, so it looks a little bit neater, where we have a triple bond in the middle instead, and again, we need our negative 1 charge there.
让我们重写这个,这样看起来更整洁一点,我们有一个三键在中间,同样地,我们这里需要一个负电荷。
If we overlay what the actual molecular orbital is on top of it, what you see is that in the center you end up cancelling out the wave function entirely.
如果我们把真实的分子轨道覆盖在上面,你可以看到中间的,波函数是完全抵消掉了。
The scripts are in the middle, the sprites are on the right hand side, so when I have the stage selected at the moment, I'm seeing the script that are associated with sort of the whole program itself, the so called stage.
这些脚本在中间,这些精灵都在右边,当我们选择了某一刻的场景,我们就会看见与整个方案相关联的,脚本,这就是所谓的场景。
After all that looks a lot like the Downs-Hoteling model, we've got two candidates exactly at the middle, is that an equilibrium?
毕竟那看起来很像当斯-霍特林模型,我们有两个绝对在中间的候选人,那是个均衡吗
PROFESSOR: And so in this case, it's using the same piece, but it's returning that middle value that says they're actually the same.
教授:那么实际在这个例子中,我们用的是同一个函数,它返回了中间的值也就是,0来表明着两个参数。
And in between the two cancel, and here we are at the minimum.
在这两个中间,我们得到最小值。
We're seeing that the wave function's adding together and giving us more wave function in the center here.
我们看到波函数加在一起,使中间的波函数更多了。
So that should make it very easy to picture that this is being cancelled out in the middle.
这让我们很容易想象,在中间它是被抵消了。
And in this case we have three choices here in terms of what's going to be in the middle, so we need to decide that first.
而这种情况下对于哪个原子,在中间我们有三种选择,这是我们首先要确定的。
So we're going to choose a point about in the middle of my program.
我们要去选择一个大概,在我们程序中间的点。
Let's take a look at the lowest ionization energy in the center case.
让我们来看一下电离能最低在中间的情况。
So instead, these would be canceling out wave functions between the two, so we would end up with a nodal plane down the center.
相反,两者之间的,波函数会相互抵消,所以我们在中间会得到一个节面。
All right. So, let's go ahead and draw our Lewis structure here with sulfur in the middle.
好,那么,让我们来把我们的,路易斯结构画在这,硫在中间。
So, this one can be tricky because oxygen looks like it's in the middle because of the way it's written, but we need to start by looking at the lowest ionization energy.
这个例子可能有些狡猾,因为氧看起来是在中间的,因为它是这样写的,但是我们需要从寻找最低的电离能开始。
It's easy to write the skeletal structure, because it's all oxygen, we don't have to worry about what's going to go in the middle.
画它的骨架结构很容易,因为它们都是氧原子,我们不需要担心哪个原子在中间的问题。
If we look at our last structure here where we have nitrogen the middle, we can also figure out all those formal charges, and in this case we have plus 1 on the nitrogen, we have minus 2 on the carbon, and then we end up with a 0 on the sulfur there.
如果我们来看看最后一个结构,在中间的原子是氮,我们同样可以计算出所有的形式电荷,而在这种情况下,氮为正一,碳为负二,而最后硫为零。
And that idea was, we make a guess in the middle, we test it so this is kind of a guess and check, and if the answer was too big, then we knew that we should be looking over here. If it was too small, we knew we should be looking over here, and then we would repeat.
这些有理数是有序排列的,然后我们的想法是,首先在中间取个数作为猜想数,然后对这个猜想数进行验证,如果由猜想数得到的答案太大,我们知道应该跳过,比猜想数大的那个区间,如果太小的话。
Now here we ended up with two centrist candidates, which is a result pretty close to what we saw in the Hoteling model, Is this an equilibrium?
现在我们最终有2个中间派候选人参选,这与我们,在霍特林模型中看到的非常相似,这是一个均衡吗
In fact, there's a rabbinic image, there's a rabbinic tradition that talks about this period of time, and has God and Moses talking, and God says: Listen, between the two of us, whenever I blow hot, you blow cold, or when I pour hot water, you pour cold, and when you pour hot, I'll pour cold, and together we'll muddle through, and get through here.
事实上,这里有一个与犹太律法相关的意象,犹太律法传统,描述了这段时间中,上帝和摩西又一次谈话,上帝说:“听着,在我们两个人中间,当我吹热风,你要吹冷风,当我泼热水,你要泼冷水,当你泼热水的时候,我们泼凉水,我们将一起应付各种情形。
So if we square sigma 1 s star, we flip the amplitude so it's all positive now, but again we still have this node right in the middle.
如果我们平方1s星,我们把振幅翻转所以现在都是正的,但同样在中间有个节点。
Similarly, with the second hydrogen atom, we've got the nucleus in the middle, and the 1 s b wave function around it.
类似的,在第二个氢原子里面,我们在中间有原子核,周围有1sb波函数。
sb So in this case we would have 1 s a and 1 s b, and instead we would subtract one from the other, and what we would see is that instead of having additional, more wave function in the middle here, we've actually cancelled out the wave function and we end up with a node.
在这种情况下我们有1sa和,两者相减,我们可以看到不是在,中间有了额外更多的波函数,而是我们消掉了,波函数得到一个节点。
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