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Now you have this situation where you have a droplet that is net negative or perhaps net positive.
现在的情况是那些液滴,可能是净负电，也可能是净正电。
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So, what we can do is try using the classical description of the atom and see where this takes us.
用经典力学描述原子看看怎么样,我们要考虑的是一个,带正电的粒子和。
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And then I am going to take sodium gas and I am going to make this into sodium gas plus electron.
接下来，将气态的钠,转化为,带正电的气态钠。
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Studies using imaging techniques like CAT scans, PET, and fMRI, illustrate that different parts of the brain are active during different parts of mental life.
应用电脑断层扫描,正电子发射断层扫描,以及功能性核磁共振成像,等成像技术的研究,表明不同的心理活动,会导致不同大脑区域的激活
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He could divide all of that by the absolute value of the charge of the positive particle, all over the mass of the positive particle.
他可以把这整个,除以正电粒子的,电荷绝对值除以，正电粒子的质量。
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If instead we had a positive ion, a cation, what we would have to do is subtract 1.
如果我们有一个带正电的离子，一个正离子，那我们就需要再减去一个。
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And the way I have this configured, the left electrode is going to be charged negatively and the right electrode is going to be charged positively.
我必须指出，左边电极充负电,右边电极充正电。
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So, at any moment, you know in any bond which is the more electropositive.
在任何时候，你都能判断谁是正电性的。
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This was my first glance at plum pudding, and I guess you can see that this must be that positive part -- most of the plums are within that, and you can see all these little raisins or plums in here, that would be that negative charge.
我想你们可以，看到着一定是正电部分,大部分的李子,都在这里面，你们也可以看到,这些小的葡萄干或李子，这就是负电荷。
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PROFESSOR: Much, much smaller the positive particle.
教授：非常非常小,比起正电粒子的质量。
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And I am able to vary the voltage on the plates making this for argument's sake negative and this for argument's sake positive.
我可以改变两个板子上的电压,为了论证，这个是负电,这个是正电。
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So this is a little bit negative and this is a little bit positive, which means I could model this by drawing a dipole. This is a dipole.
这边带一点负电,这边带一点正电，这意味着我能把它表示,成一个偶极。
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But, there is a positive 79, so the positives deflect.
但是有79个正电荷，这些带正电的发生偏转。
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Typically, these are recent imaging methods like CAT scan and PET scan and fMRI which, as I said before, show parts of your brain at work.
通常是应用现代的成像技术来进行研究,比如电脑断层扫描,正电子发射断层扫描技术,以及功能性核磁共振成像,正如我之前所说,这些技术可以让你看到大脑的活动区域
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So even if we strip an atom of all of its electrons, we still have that same amount of positive charge in the nucleus.
所以即使把一个原子的所有电子都拿走,原子核还是带那么多的正电。
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It has a negative end and a positive end and it has certain properties.
这是一个偶极，有正电端也有负电端,偶极具有一定性质。
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Electropositive is down to the left because that is where the metals live.
带正电性的元素常,在左边因为那里是金属区。
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So, what happens if I put pluses and minuses in a gas phase?
如果我把带正电的东西和带负电的东西都放在,一个气相中，会是什么样呢？
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But there's more because now I've got pluses and minuses.
但是还有别的问题,因为我现在得到了带正电的东西和带负电的东西。
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Look at beryllium 2 plus, very tiny, charge plus two.
例如铍二正离子，非常小，带2个单位正电。
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It has a nucleus at the center charged positively.
中心有个带正电的原子核。
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And, of course, all that's left is this positive pudding. So that's not going to do anything either. And what he found when he did this experiment, was that the count rate with still 132 000 counts per minute.
剩下的是带正电的布丁,也不会产生什么影响,结果他实验上观测到,计数器测得每分钟132000下,所以到目前为止,他可以说实验。
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Pluses attract to minuses, minuses attract to pluses.
正电吸引负电，负电吸引正电。
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The first, which I just stated, is that the deflection of that negative particle was just far and away more extreme, much, much larger than that of the positive particle. The other assumption that he made here is that the charge on the two particles was equal.
为了这么做，他又做了更多的观察,首先，像我之前已经说了，测到的负电粒子,偏转要远远,大于正电粒子,另外一个他做了一个假设。
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This is delta minus and this is delta plus.
这边是负电，这边是正电。
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The sodium is net positive.
钠离子是带正电的。
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Yeah, this is net positive.
是的，这是正电。
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Sodium is net positive.
钠离子是带正电的。
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