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Just like we see destructive interference with water waves or with light waves, we can also see destructive interference with orbitals.
就像我们看到水波,和光波的相消干涉，我们也可以看到轨道的相消干涉。
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So, we'll start by taking a look at constructive interference, and another way to explain this is just to say again, molecular orbitals are a linear combination of atomic orbitals.
我们先来看一看相长干涉，另外一个解释它的方法就是说，分子轨道是原子轨道的组合。
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We don't have a lot of supernatural interference in this story.
我们这个故事里看不到很多超自然的干扰。
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You've heard about RNA interference, for example, and that is the process of stopping this, to stop a gene from being expressed.
比如说,你们听说过的RNA干扰,就是一种阻止,基因表达的手段
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Got it.At one end though, s the Wall Street end, s much harder to see direct government interference.
明白，但是另一方面，华尔街，it’,很难看见，it’,政府的直接干预。
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Since we're talking about wave functions, since we're talking about the properties of waves, we don't only have constructive interference, we can also imagine a case where we would have destructive interference.
因为我们讨论的是波函数，因为我们讨论的是波的性质，我们不仅有相长干涉，我们也可以想象在,某种情况下会有相消干涉。
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So if we have constructive interference between the two, what we're going to see is our molecular orbital looks something like this.
如果两者是相干干涉，我们看到分子轨道,看起来是这个样子的。
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So we want to have constructive interference to form a bond, where as if we had destructive interference, we would not be forming a bond.
我们需要,相干相长来成键，如果，相干相消了，就不能成键，所以这时候。
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When we were talking about constructive interference, we had more electron density in between the 2 nuclei.
当我们讨论相长干涉的时候，在两个原子核之间有更多的电子密度。
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So if we're subtracting the interference term, what we have here now is destructive interference.
如果我们减去干涉项，我们得到的就是相消干涉。
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So in this case where we're adding it together, this is going to be constructive interference.
在这个情况下，我们把它加在一起，这是相干干涉。
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And really, all you're experiencing there is destructive interference in a very bad way.
我有的，实际上，你们感受的,相干相消的负面影响。
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The reason that we can talk about this is remember that we're talking about wave functions, we're talking about waves, so we can have constructive interference in which two different orbitals can constructively interfere, we can also have destructive interference.
我们可以这么说的原因是,记住我们说的是波函数，我们说的是波函数，所以我们可以得到相长干涉,这是两个不同轨道会相长干涉，我们也有相消干涉。
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All right. So we see constructive interference, of course, we can also see destructive interference.
好了，我们看到的是相长干涉，当然我们也会看到相消干涉。
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And in either case if we first talk about constructive interference, what again we're going to see is that where these two orbitals come together, we're going to see increased wave function in that area, so we saw constructive interference.
在任何情况下,如果我们首先讨论相长干涉的话，我们同样会看到,当这两个轨道靠拢的时候，我们看到这个区域有波函数增加，所以我们看到的是相长干涉。
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Because if we think about wave behavior of electrons and we're forming bonds, then what we have to do is have constructive interference of 2 different electrons, right, to form a bond, we want to and together those probabilities.
如果我们考虑,电子的波动行为,并且，我们要成键的话,我们要,把，这些概率，加在一起,如果。
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