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And I look up and see that 55 the electronegativity of carbon is 2.55 2 we already know, is 2.20.
我查了一下电负性,碳是2。,2。
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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。
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Sometimes we have a very electronegative atom that's going to take more of its equal share of electron density.
有时候我们会有一个电负性很高的原子,它将会获取更多的共用电子密度。
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Well, if you're implementing a computer that needs to represent information now all you need is something like electricity which can be on or off, on or off.
好吧，如果你正用一个电脑,来表现表达传递信息的功能,你就需要,像电开关一样的物体。
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I don't know if you know how a spark plug works, but for the electrical current to fly into operation in a spark plug, the two points of contact have to be gapped.
我不知道你们是否知道,火花塞是怎样工作的，在电流通入火花塞中使它运转之前，两个接触点之间需要有空隙。
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So, that process happens fast but you also need this neurotransmitter release and activation to happen fast so that you can have rapid activity.
所以 电传递过程很快,但你仍需要神经递质的,快速释放和快速激活,以便使你快速活跃起来
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As the teacher is with the learner next to him, it goes down.
如果电击者与被电击者一起,站在被电者击旁边，致命电击次数减少。
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And then finally we could add that--the idea that maybe with a lot of electronic basses and things like that that they play--they tend to play the bass just louder.
然后最后我们可以添加这个，一种很多电贝斯和其他同类乐器演奏的方式,倾向于将低音演奏得响亮一些。
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8 You will see if you get --I think the delta here is 1.78, 8 which is roughly 1.8.
我认为电负性差值应该是1。,约等于1。
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if we think about electronegativity as a periodic trend we can just draw our nice periodic table here, and let's separate it into quadrants.
如果我们来思考一下电负性的周期性规律,我们可以把我们漂亮的周期表画在这，然后把它分成四个象限。
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So, Marsden came up with the model, and as you go through 8.02 and you understand electrostatics and electrodynamics, you'll be able to do this analysis.
后来马斯登提出了这个模型，就像你们通过8。02的考试一样2,你们学过了静电学和电动力学，你也能做这些分析。
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There is a repulsive force, the attractive force between ions of opposite charge is offset by a repulsive force due to electron cloud interactions.
有一个斥力时,存在于电性不同的离子间的引力,是可以被抵消的，因为电子可以相互影响。
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So that means that the more stable molecule is going to be this molecule here, which actually puts the negative charge on be more electronegative atom.
因此这意味着更稳定的分子,应该是这一个，它真正把负的电荷放到了,电负性更高的原子上。
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So we need to go to this second case where we're instead going to think about electronegativity, and we want to think about which atom is the most electronegative.
因此我们需要转到这个第二种情况,来考虑一下电负性，我们需要想想哪个原子的电负性是最高的。
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And, this is the difference in electronegativity between the two elements, all right?
就是在两个元素之间的,电负性的差别？
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So if we think about the upper right hand part of the quadrant, well, this is where we're going to have high electron affinity and high ionization energy, so we're also going to see high electronegativity here.
那么让我们来看看右上方的部分，好，在这里我们将会有高的电子亲和能,与高的电离能，因此我们会看到这里的电负性也很高。
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If you look at the electronegativity difference 73 for sodium iodide, it is 1.73.
如果你看到电负性之差,对碘化钠来说，是1。
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So carbon is to the right of hydrogen, this is more electronegative.
碳在氢的右边，所以它较氢更是电负性的。
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Next time maybe we'll charge it up before class.
下一次或许我们,会在课前把它充上电。
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And to measure the intensity of unequal sharing, we take the difference in electronegativity, which I am going to use the Greek symbol chi for.
要度量非平均的程度，我们考虑电负性的差异，我要用希腊语第22个字母chi来表示电负性。
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Charge neutrality won't allow for it.
电中性原则不允许这样。
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In the heart it turns out that the cells of the heart are electrically coupled together, so if an action potential moves down this cell it directly moves into the next cell.
在心脏中,事实证明,心脏细胞是电偶联的,所以如果动作电位在一个细胞中传递,那么直接就能传递给下个细胞
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Things like electricity, having electricity delivered to your home, so you had to have ways to generate electricity and to carry it from point to point and it was engineers that did that.
比如电,为了让电传输到千家万户,人们必须想办法发电,并将电从一个地方输送到另一个地方,是工程师做到了这些
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We've found that stimulation, electrical stimulation deep in the brain can help patients that have Parkinson's Disease and can reduce the tremors and loss of muscle control that many patients with Parkinson's Disease use.
我们已经发现,这种脑部深层的电刺激,可以缓解帕金森氏症患者的症状,如震颤和肌肉丧失控制,许多帕金森氏症患者都使用这种疗法
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So let's listen to a track here, a sax solo and I am going to try to keep-- make some sense out of this-- because it gets more and more complex-- by following the electric bass underneath so let's listen to an old tape.
那么我们听一下这段音轨,一段萨克斯独奏,我会尽量从中,理出一些头绪,因为我们的音乐片段会越来越复杂,大家可以跟着底下电贝斯的节奏,好的,我们来一下老磁带
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And in this case, the tie-breaker goes to the molecule in which the negative charge is on the most electronegative atom.
而在这种情况下，我们需要进行“附加赛“,也就是看看分子中带有负的,形式电荷的原子是不是电负性最高的。
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He introduced the concept of electronegativity which was a measure, therefore, it is quantitative, of the atom's ability to attract electrons within a covalent bond and developed a scale of electronegativity.
他引入了电负性这一概念,一个反映着原子在成共价键时吸引电子的能力的数据标度，因此这是数量上的，在共价电子中,电子原子能吸引电子,并发展为一定规模的电负性。
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I was so proud of myself getting the lecture notes finished early and handing them in to CopyTech, and then I realized we didn't do electronegativity on Wednesday.
我感到很自豪,对自己能够提前做完讲义,并交给复印中心但是之后我才想起来,我们周三没有讲电负性。
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The molecule is net neutral, but this right end is a little bit more negative and the left end is a little bit more positive.
这分子是电中性的，但右边要带一点负电荷,而左边要带一点正电荷。
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Well, let's see something really crazy with electronegativity.
让我们看一些东西,关于电负性的。
应用推荐