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On Tuesday, the president announced plans for the government to guarantee more than eight billion dollars in loans for two new nuclear energy centers in the state of Georgia.
VOA: special.2010.02.19
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So this delta energy here is very simply the energy of the initial state minus the energy of the final state.
很简单的，这个能量差等于,初始能量减去末能量。
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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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"That's why today, I am please to announce that over the next year, the State Department will be creating Virtual Student Foreign Service Internships to harness the energy of a rising generation of citizen diplomats."
VOA: special.2009.06.05
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In the case here, tha t I just illustrated with the little cart going down the valley, would be exactly the same with regular energy, the equilibrium state is one of lowest energy, right.
在现在所考虑的情况下,我刚才所描述的小车沿着山谷下行，结论会像能量判据一样，平衡态是能量最低的态。
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Experts say the $150 million plant is expensive compared to other technologies, and produces only a fraction of the state's energy needs.
VOA: standard.2009.10.27
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So we can't actually see any of that, it's too high energy for us to see. So everything we see is going to be where we have the final energy state being n equals 2.
所以我们是看不见它的,它能量太高了，我们能看见的,都是终态等于2的情况。
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State utility Florida Power and Light says its Arcadia plant will produce 25 megawatts of energy, making it the largest in the nation at least for now.
VOA: standard.2009.10.27
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So it's going to be favorable for the electrons instead to go to that lower energy state and be within the molecular orbital.
所以对于电子来说,更倾向于能量更低的轨道,呆在分子轨道里。
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Washington State Representative John McCoy says renewable energy needs a bigger push.
VOA: standard.2010.03.23
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Well, the energy at infinity is zero -K and the energy in the ground state is minus K.
无限远处的能量值为,而基态能量值为。
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National and state governments around the world have been trying out various incentives and subsidies to promote clean renewable energy but the global economic slowdown has hurt the ability of many governments to dole out public funds.
VOA: standard.2010.03.23
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So if we think about, for example, this red line here, which energy state or which principle quantum number do you think that our electron started in?
我们来看看，比如这里的这个红线，它是从主量子数,等于多少的能级发出的？
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And the truth is that yes, this costs energy, we're going up to a higher energy state.
事实上，它需要消耗能量，我们到了一个更高的能量状态。
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What is happening is it turns out that putting the electrons in that lower energy state is stabilizing that molecule So that works.
发生的就是,把电子放在低能级状态,稳定了分子，因此这就行得通了。
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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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So, in fact, yes, we did confirm that these covalent bond, at least in the case of hydrogen, we have confirmed by the numbers that we are at a lower energy state when we talk about the bonded atom versus the individual atom.
因此，事实上，是的，我们证实了共价键，至少在氢这种情况下，我们通过数据证实了,成键的原子处于能量更低的状态,当其与单个的原子相对比时。
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So, if you use a black lamp or something and you excite something up to a higher energy level and then it relaxes back down to its lower energy state, it's going to emit a new wavelength of light, which is going to be visible to you.
如果你用一个紫外灯或别的,东西把某种分子激发到,更高的能级，然后它会掉回,到低能级，它就会释放,一个新的波长的光,这个光是可见的。
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So we know that we're in the n equals 5 state, so we can find what the binding energy is here.
我们知道,我们在n等于5的态，我们可以找到结合能是多少。
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What is the binding energy of the ground state electron in hydrogen?
氢在基态的情况下,它的电子结合能是多少？
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It's the state that has the lowest Gibbs free energy.
它具有最小的吉布斯自由能。
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So, if we want to go from that stable state to that less stable state, we need to put in a certain amount of energy to our system, that difference between the free electron and the electron bound to the metal.
所以，如果我们想使电子,从稳态到达不够稳定的状态，我们需要引入一定数量的,能量到系统中，即自由电子和束缚于金属的,电子的能量差。
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It's a more negative energy, it's a lower energy state.
负号表示能量低。
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That is the ground state energy of atomic hydrogen.
同时也是氢原子基态的能量值。
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Suppose the E incident is greater than the energy in the transition going from ground state n=2 What will happen?
假设入射能量远远大于,从基态向,转变的能量。，to，n，equals，two。,那会发生什么？
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The sum of path number 2 and path number 3 get me to the same place, so the energy change by going through this time path, this intermediate point here back all the way to final state should be the same the red path.
而经过路径2和3可以3,到达同样的末态，因此经过路径,2和3带来的能量的变化，与路径1带来的,能量变化相同。
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This intuitively should make a lot of sense, because we know we're trying to minimize electron repulsions to keep things in as low an energy state as possible, so it makes sense that we would put one electron in each orbital first before we double up in any orbital.
这个直观上讲得通，因为我们知道尝试去最小化电子排斥力,从而尽可能的保持处于一个较低的能态,所以它讲得通,在我们在同一个轨道放入两个电子之前,我们首先把电子放入每一个轨道。
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It'll go to the lowest energy state.
所以晶体会具有最低的能量。
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And what the second point of Aufbau says is that as electrons begin to fill those levels the differences in energy may shift so that in an unoccupied state certain levels may be in the inverse order from how they are in the occupied state.
构造原理谈到的第二点是,当电子开始布满这些层时,能量差可能会有改变,所以在一个未占据的确定能级,可能与它们占据时,的排布顺序是相反的。
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When we talk about the n equals 2 state, we now have 2 squared or 4 degenerate same energy orbitals, and those are the 2 s orbital.
当考虑n等于2的态时，我们有2的平方,或者4个简并能量的轨道，它们是2s轨道。
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