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The summit will take place at a convention center recognized for leadership in energy and environmental design.
VOA: special.2009.07.13
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Now, if this incident energy is great enough it will take an electron out of the ground state and promote it.
现在，如果入射能足够的话,它会将一个电子从基态中释放出来,并且加速它。
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because as much as we take advantage of it, it's an energy that's here,
这里有这样的一种能量，因为只要我们好好利用，
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(Obama's Speech) In crafting the U.S.response to global climate change, the president said congressional lawmakers must take into account the real price of America's heavy reliance on petroleum-based energy.
VOA: standard.2010.06.14
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So now we can just take the negative of that binding energy here, and I've just rounded up here or 1 . 4 times 10 to the negative 19 joules.
等于4是第三激发态,现在我们可以取它结合能的负值,也就是1。4乘以10的负19次方。
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And last June,says Sittenfeld, the House passed the American Clean Energy and Security Act, the first bill out of either chamber of Congress to directly take on the challenge of global warming.
VOA: standard.2010.02.25
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You can take heat energy and convert it to work energy and vice versa, and it doesn't say anything about that you have to waste heat if you're going to transform heat into work.
你可以把热能便成功,也可以反过来,但它对于如果你要把热变成功,就必须浪费热量这件事只字未提,它只是说这是能量。
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"Coping with these kind of impacts if you're dealing with significant affects on your agriculture or your water supplies, your infrastructure and also trying to develop new kinds of energy approaches, for example--that's going to take long term investment,"
VOA: standard.2009.12.11
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So, in a first blush, you might say, well, why don't we just take the first ionization energy?
当你在这个问题上第一次陷入尴尬境地的时候，你可能会说，我们为什么不取第一个电离能呢？
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If you take in more calories than you consume, it gets stored in the fat cells, that's the energy bank that you can draw upon if you don't have enough food and starvation or famine were an issue.
如果你摄入的热量超过消耗的,热量就会存储在脂肪细胞中,这就是能量库,你可以在,食物不够以及饥饿或饥荒的时候利用它
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And instead of having the electron giving off energy as a photon, instead now the electron is going to take in energy from light and move up to that higher level.
与电子以光子形式施放能量不同,我们现在要从光中,获得能量到一个更高的能级。
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So, for example, in a hydrogen atom, if you take the binding energy, the negative of that is going to be how much energy you have to put in to ionize the hydrogen atom.
例如在氢原子里面,如果你取一个结合能,它的负数就是。
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We looked at the wave functions, we know the other part of solving the Schrodinger equation is to solve for the binding energy of electrons to the nucleus, so let's take a look at those.
我们看过波函数，我们知道解,薛定谔方程的其他部分,就是解对于原子核的电子结合能，所以我们来看一看。
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We start at this lower energy state and go up that means we need to absorb a photon, we have to take in energy.
我们从一个低能级开始，到一个高能级去,这意味着需要吸收一个光子，我们要获得能量。
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Let's take a look at the lowest ionization energy in the center case.
让我们来看一下电离能最低在中间的情况。
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So, let's think about kind of differentiating, however, between first ionization energy or just ionization energy, and other types such as second or third ionization energy, and let's take boron as an example here.
那么，让我们来区分一下第一电离能，也就是电离能与其他类型的电离能，比如第二，第三电离能，我们以硼为例。
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If I take lambda equals one angstrom, hc/lambda go through hc over lambda, you will discover that the energy of a photon with one angstrom as its wavelength is on the order of 12,400 electron volts.
如果我让波长等于一埃，能量为，你将发现光子的能量,当其波长为1埃的时候,相当于12，400电子伏特。
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now we're not just talking about 1 photon, 1/2 let's say we shoot them all at the same time at our metal, each of them having some energy that's let's say 1/2 the work function. So, just to take a little bit of an informal survey, who thinks here that we will have an electron that is ejected in this case?
我们现在不仅仅讨论一个光子，它们所具有的能量是功函数的，我们在同一时刻把它们打到金属上,我们做一个不太正式的调查,谁认为这种情况下,一个电子会被打出？
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Specifically, we have to take in this exact amount of energy in order to bump the electron up to higher energy level.
特别的，我们严格需要,这么多,来把电子，提升到更高的能级。
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If I want to take the average energy of all of those, what I can do is go over to my data set.
如果我想得到这所有电子能的平均值，我就得去看一下我的数据库。
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So, second ionization energy simply means you've already taken one electron out, now how much energy does it take for you to take a second electron out.
第二电离能简单地说就是,在你已经拿走一个电子以后，再拿走第二个电子,所需要消耗的能量。
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If you took a 15 inch artillery shell moving at the velocity it typically goes at, and take that amount of kinetic energy versus the resistive capacity of a sheet of tissue paper, that's the scale that we're looking at here.
如果你有1个15英寸的炮弹,按照经典的速度移动，会消耗大量的动能,抵抗来自于一张薄纸的阻力，这就是我们在这儿看到的尺度。
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And what we predict as an energy difference between two levels, we know should correspond to the energy of light that's either emitted, if we're giving off a photon, or that's absorbed if we're going to take on a photon and jump from a lower to a higher energy level.
我们预测，两个能级之间的能量差，我们知道，它要么和发出的光有关,如果它发出光子的话，要么它吸收光子,从低能级跃迁到，更高能级上去。
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Now what I want to do is take you exactly to this place where we are right now, where we see energy levels and electron filling, but I want to start all over again and I want to use a totally different approach.
现在我想做的是带你们,到达我们现在所处的地方，我们能看到能量级和电子分布的地方，但我想重新开始,而且用一个完全不同的方法。
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So, let's take a look here at an example of an energy diagram for the hydrogen atom, and we can also look at a energy diagram for a multi-electron atom, and this is just a generic one here, so I haven't actually listed energy numbers, but I want you to see the trend.
所以让我们来看看,一个例子氢原子的能量图，我们也可看看一个,多电子原子的能量图，这是一个普通的图谱，我没有列出能量的数字，但是我想让你们看这个趋势。
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What we're proposing here is that you take a nice low energy s electron and move it into a higher energy p orbital.
我们这里说的是,你把一个低能s电子,移到高能p轨道里去。
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