So, when we get really close together, granted, there is a net positive negative charge with a Coulombic force of attraction.
当它们真正离得很近时,假设有一个带正负电的电荷,带有库仑引力。
Well, my family really liked that it was close and I really like that the community is really close.
嗯,学校离得很近,家里人都喜欢。而且我喜欢大家都很亲密。
So, this makes this chart shown in pink make a lot more sense, because if we're way out at very far distances, essentially what we have here is we're talking about two separate atoms.
因此综合考虑这些因素可以发现这条粉红色曲线很合理,因为如果我们离得非常远,本质上来说,我们讨论的就是两个分开的原子。
In other words, if you look too closely at a picture or if you stand too far away from it you don't see it clearly it's out of focus but if you achieve just the right distance from it, it comes into focus.
换句话说,如果你站得离一幅图画太近,或太远都无法看清它,它在焦距之外,但是如果你站在合适的位置上,焦距就对准了,画就清晰了。
The fewer feet, the more likely a romantic relationship, all other things being equal.
离得越近,越可能发展恋情,在其他条件一样的情况下。
But, what happens when these two start to get really close together?
但是,当这两个电荷,开始离得很近时会发生什么呢?
You see the mountains are so close by.
你瞧,山离得很近。
And he's sitting kind of far away.
他坐得离你远了点。
Yeats is describing his interaction with and his distance from Pearse and the others in that first stanza, and then in the second.
叶芝在描述他对此的感受,他和皮尔斯那些人离得很远,他在第一节诗里谈到这个,在第二节诗中。
Then that's not a very long distance, probably easily walkable in a few minutes; but that child can't be walking through everybody's yard.
他们离得不远,可能走几分钟就到了,但是你的孩子却不能直接走到他的朋友家
Before you go though, let's just think about it a second, so you can think about it and talk about it at home, so what we just saw was an election in which we saw two candidates, Jean and Claire Elise, who both stood very close to each other.
在你们走之前,再思考一下,这样你们可以在家里思考并讨论,我们刚刚看到的是一个选举,在其中我们看到了两个候选人,吉恩和克莱尔·伊莉斯,她们离得非常近
It's close by. BJ's is always really good, so.
离得近。BJ's总是很好。就这样。
Joe's, ok. That's really nearby, three streets down.
oe's。离得很近,往南三条街。
That's the huge force that we're talking about in terms of making a bond stable, but there are also repulsive forces, so you can imagine we're going to have electron-electron repulsion between the two electrons if we're bringing them closer together.
正是这个非常强的力,使得我们所讨论的这个键能够稳定存在,但是其中还有排斥力存在,大家可以想象一下,我们会有电子与电子之间的排斥力,如果让它们离得更近。
And for the s electron, since it can get closer, what we're going to see is that s electrons are actually less shielded than the corresponding p electrons.
对于s电子,因为它可以离得更近,我们可以看到s电子事实上,相对于p电子受到,更少的屏蔽。
But, can you see that as you get really close together the negative electronic cloud surrounding the two ions start to sense one another.
然后当你真的让它们,离得很近时,这两个离子周围的负电子云能感应到对方。
So that's just a little bit of a check for yourself, and it should make sense because what you're doing is you're calculating the difference between energy levels, so you just need to flip around which you put first to end up with a positive number here, and that's a little bit of a check that you can do what yourself.
所以你们总要确保括号,离得这项是正的,这是你们自己,可以做的检查,这事很有道理的,因为你们做的是计算能量差,所以你需要调整顺序来保证一个正数,这是你们自己可以做的检查。
And that's what you want because the electron repulsion is only felt when you are in really, really close.
而那就是你想要的,因为电子间的斥力只有当它们,离得非常非常近时才能感觉得到。
And, see, out at very, very high separations, it's essentially all repulsive, excuse me, all attractive.
看,当它们离得很远很远时,基本上只有斥力,对不起,是引力。
When they start getting close together, there is more complexity.
当它们开始离得很近时,就变得很复杂了。
Keep in mind we do have this p orbital here and it's coming right out at us. And this p orbital is here, but it's empty, it doesn't have any electrons in it, that's why we don't have to worry about it in terms of getting our electrons as far away from each other as possible.
他们程120度角互相远离,这样它们离得最远,记住我们这里确实有个p轨道,它朝向我们,这里有个p轨道,但它是空的,里面没有电子,这就是为什么我们在考虑。
应用推荐