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And what we find out is the wavelength of a Matsuzaka fastball is 1.1 times 10 to the -31 meters.
我们算出松阪快球的波长,是1，1乘以10的负31次方米。
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And if you work out the energetics as we've gone with thermochemistry, dH you discover there's a huge negative delta H.
如果你计算能量变化,就像在化学热力学中所作的一样，你会发现很大的负的。
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So if I tell you that the energy for single hydrogen atom is negative 13 12 kilojoules per mole.
如果我告诉大家单个氢原子的能量,是负的，1312，千焦每摩尔。
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This thing better start turning negative soon or we are going to change the way the world works here.
它们很容易一开始就转化成负的,或者我们将取改变那儿工作方式。
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But if the balance of pain over pleasure-- If there's more pain than pleasure so that the balance is negative, that's worse than zero.
如果痛苦减快乐-,如果痛苦多于快乐,那么结果就是负的，比零小。
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Now, what happens during an action potential is that that membrane potential changes very rapidly and it changes from being negative to being more positive.
在动作电位产生时,膜电位迅速改变,从较负的电位向更正的电位改变
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But the mathematicians told Dirac, "You cannot ignore the negative energy solution because it tells you there's a second solution and you cannot throw them out."
但数学家们告诉狄拉克,你不能忽略负的能量,因为数学告诉我有两个根,你不能随便丢掉
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You can call your broker and say, I'd like to short stock number one and what the broker will do is borrow the shares on your behalf and sell them and then you own negative shares.
你可以打电话给你的经纪人说，我要做空一号股票,经纪人就会在你的名下赊入这些股票,然后卖掉,这样你就拥有数量为负的股票了。
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- So most of you recognize, if we switch back to the notes, that they do have a negative electron affinity.
看来大部人都想到了，如果你翻翻讲义的话，它们的电子亲和能确实是负的。
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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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It's just minus the sum of all these things, because of course these are just defined as the work done by the environment to the system.
等于负的这些东西的和，因为它们的定义是,环境对系统所做的功。
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So, the system does work on the surroundings, hence the minus sign.
系统对环境做功，因此符号是负的。
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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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You'll also know that all of these binding energies here are negative, so the negative sign indicates that it's low.
你们将会知道所有的这些,结合能都是负的。
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So, if we compare the sulfur to the oxygen, the oxygen it turns out is more electronegative and that is what holds the negative charge in this molecule.
因此，如果我们来比一下硫和氧，氧应该有更高的电负性,而在这个分子中它确实有负的电荷。
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So this is not going to be a favorable process, we're going to find that the electron affinity is actually a negative 7 kilojoules per mole for nitrogen.
因此这并不是一个容易发生的过程，我们会发现氮的电子亲和能,应该是负的，7，千焦每摩尔。
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And remember again, the binding energy physically is the negative of the ionization energy, and that's actually how you can experimentally check to see if this is actually correct.
电离能的负值，那个事实上是可以,通过实验来验证，它是否是对的,并且它等于负的。
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If we want to talk about two hydrogen atoms, then we just need to double that, so that's going to be negative 2 6 2 4 kilojoules per mole that we're talking about in terms of a single hydrogen atom.
而要讨论两个氢原子，我们只需要把它乘以二，因此应该是负的，2624，千焦每摩尔,这就是单个的氢原子的情况。
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So, in this case, we see that our formal charge is negative on the nitrogen, in this case it's negative on oxygen.
那么，在这种情况下，我们看到氮的形式电荷是负的，而在这种情况下，氧的是负的。
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And we know what that's equal to, this is something we've been over and over, ionization energy is simply equal to the negative of the binding energy.
而且你知道它等于什么，这是我们说过一遍又一遍的，电离能就等于,负的束缚能。
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So, we need to actually add on this fourth quantum number, 1/2 and it's either going to be plus 1/2 or negative 1/2.
所以我们需要加上这第四个量子数，它等于1/2或者负的。
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Positive energy is repulsive, and negative energy is attractive.
正的能量值代表斥力，负的能量值代表引力。
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dV dT Is equal to minus dV/dT at constant pressure.
它等于，负的恒定压强下的。
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We know that binding energy is always negative, ionization energy is always positive.
我们知道结合能，总是负的，电离能总是正的。
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SdT This has minus T dS minus S dT, but the dT part is zero because we're at constant temperature.
这一项包含负的Tds和，但是dT的部分等于零,因为温度为常数。
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The ionization energy, of course, is just the negative of the binding energy.
电离能，我们知道也就是,负的结合能。
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Electron affinity, however, can be either negative or it can be positive.
但是，电子亲和能既可以是负的,也可以是正的。
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q2 So q2, the heat in this way is negative.
所以沿这个方向的，是负的。
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49 That turns out to be negative 349.
结果是负的。
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So you don't want to put in a negative energy, that's not going to help you out, you need to put in positive energy to get an electron out of the system. So that's why you'll find binding energies are always negative, and ionization energies are always going to be positive, or you could look at the equation and see it from there as well.
因为这对电离没有帮助,你需要一个正的能量,使得电子脱离这个系统,这就是为什么你会发现,结合能总是负的而电离能总是正的,或者你们看这个方程也可以发现这一点。
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