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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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There's a sense of aliveness and energy, and in scientific terms everything is pure energy, so it's not that far-fetched.
有一种生机和能量，用科学的话来说，万物都是纯粹的能量，因此上面说法也不为过。
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What is the energy of the electron, the energy of this electron accelerating from rest and crashing into the anode here?
什么是电子的能量，电子能量由其他部分增大,撞击进入阳极？
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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 here's the pneumonic I mentioned for writing the electron configuration and getting those orbital energies in the right order.
这里是我提到的,对于写电子构型,和以正确的顺序得到轨道能量。
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Glucose has to get into cells, that's the main source of energy source that cells use, metabolism of glucose.
但葡萄糖又必须进入细胞,因为它是细胞能量的主要来源,即通过葡萄糖代谢产生能量
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Spirit is merely a kind of bodily form of energy, and God at the beginning of time infused this energy into the entirety of the material world at the Creation.
灵魂不过是能量的一种物质形式，上帝在时间之始创世纪之际将这能量,注入到了整个物质世界之中。
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They deliver different amounts of energy and they also deliver different amounts of nutrients, but we'll talk about the energy for the moment.
它们提供的能量不等,提供的营养数量也是不同的,当然我们现在讨论的是能量
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This indicates that by combining two lithiums, the energy of the combined system is lower than the energies of the atomic systems.
结果显示，两个锂结合后，其结合后的能量,比原子体系的能量要低。
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Instead, we have a certain energy, we have certain geometric constraints, we have a certain energy constraint and these fall out.
然而，我们有确定的能量，我们有某些几何约束，我们有某些能量约束。
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Yet, the temperature goes up. So, I can have a temperature change which is an adiabatic temperature change.
它与外界不会，有物质或者能量的流动,然而系统的温度升高了。
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And that means radiation of energy, and that energy has to come from inside the atom itself.
意味着有能量的辐射，这些能量来自于原子本身。
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So this means that we have two of the electrons are lowered in energy, but two are raised in energy.
这意味着两个电子能量降低,两个电子能量升高。
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And the other thing to point out is that the energy that an anti-bonding orbital is raised by, is the same amount as a bonding orbital is lowered by.
另外一个要指出的事情是,反键轨道引起的能量升高，和成键轨道引起的能量降低是相同的。
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You know, we've done a bunch of thermochemistry, and we've kind of seen that the energy of mixing, your energetics don't change too much as a function of temperature.
我们做过很多的化学热力学习题，某种程度上我们发现混合的能量，并不随着能量,发生大的改变。
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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, let's compare this to the energy of the h 2 molecule, and we find that that's negative 3,048 kilojoules per mole.
那么，让我们将它与氢分子的能量比一比，我们发现氢分子的能量是负的，3048，千焦每摩尔。
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But I can equate the amount of mechanical energy in the electron to the amount of electrical energy that was imparted through the electrodes.
但我们可以把电子中机械能量数量,和通过电极传送的,电子能量数量等同起来。
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Here is a chart that just shows the positive energies, and you can see the various components, and then the negative energies and the net.
这是展示正能量的表格，你可以看到不同的成分，负能量和总能量。
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Unlike the case for energy like you've seen in lots and lots of disciplines, where you can arbitrarily set the zero in a way that makes it convenient for you.
通过无数的练习题,你们已经看到这和能量不同，对于能量我们可以任意确定,能量的零点。
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Energy may be favoring reaction in one direction, toward let's say products that have lower energy.
能量上的变化可能支持反应，向着产物具有更低能量的方向进行。
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There are some relative, the notion that the energy gap between n equals one and n equals two is greater than that for n equals two to n equals three. That is correctly represented.
还有很多与之相关的内容，比如说这个观点，第一能量级和第二能量级,之间的能量差要大于第二和第三能量级间的,能量差，而这已经被正确地表示出来了。
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Any frequency can't have an energy, you have to -- you don't have a continuum of frequencies that are of a certain energy, it's actually punctuated into these packets that are called photons.
任何频率不能有个能量,你必须要-对某一个能量上,你不会有连续的频率,光子实际上分立的存在。
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So if I worry about energy I have a pretty good chance of extracting out these heat capacities, right, and I don't have to worry about exactly which path and I can really mix things up.
而能量与热容有密切的关系,从能量就可以就算出这两个热容，我不需要考虑到底是哪一条路径,可以随意计算。
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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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Another way to say that it's going to be less, so you don't get confused with that the fact this is in the numerator here, there is that negative sign so it's less energy but it's a bigger negative number that gives us that less energy there.
另一个方式去说它将会变得很低实用，你们不用在这里的计算器的事实感到迷惑,这里有一个负号实用，它是更少的能量,但它是一个更大的数字,这里了它给了我们更少的能量。
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So what we're saying here is the incident energy, so the energy coming in, is just equal to the minimum energy that's required to eject an electron.
这里我们来讨论一下，入射能量正好等于,发射出一个电子所需要的最低能量的情况。
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So if we have a negative change in energy for any reaction as it's written, what that actually means is we're giving off energy as the reaction proceeds.
如果我们像这里写的这样,在任何一个反应过后，得，到的能量变化为负值,这就意味着我们在这个过程中放出了能量。
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So, in this class we'll be talking about energy a lot, and it's often useful to draw some sort of energy diagram to visualize the differences in energy that we're discussing.
所以，这堂课我们会讨论很多,关于能量的问题，讨论时，画能级图来使能量差别,形象化常常是很有用的。
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They're not interacting at all so that's why the energy is the same as that for two individual atoms, that's what we're dealing with. As we get closer together, we start get lower and lower in energy.
它们之间没有任何相互作用，因此,体系的能量就等于两个分开的原子的能量，这就是我们要处理的，而随着我们的距离越来越近，我们的能量开始变得越来越低。
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