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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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It turns out everything around us moves energy around in one way or the other If you're a biological system, you're burning calories, burning ATP.
我们周围的一切物质,都以这样那样的方式传递着能量,如果你是一个生物系统，你会燃烧卡路里，燃烧。
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The radius of the orbit, the energy of the system and the velocity of the electron, I am just going to present you the solutions.
是轨道的半径，系统的能量,以及电子的速度，我接下来会给你们讲解其方程的解法。
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So we know we always want to have our systems in as low an energy as possible, so it makes sense that a bond would happen any time we got a lower energy when we combine two atoms, versus when we keep them separate.
我们知道我们总是希望使我们的系统,处于能量尽可能低的状态，因此就应该有化学键产生,一旦我们合并两个原子之后体系的能量变得更低，相较于分开时。
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That efficient metabolism that banks calories is highly efficient, highly important, highly adaptable, under circumstances where food is scarce, but not efficient and not adaptive under modern food conditions in the developed world.
能高效存储能量的代谢系统,在食品短缺的情况下,非常重要,有着较强的适应能力,但却不能适应,现代发达国家的食品环境
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I mean we can, we can sort of understand why OK, the total energy, if we measure it, we measure a process which is not reversible.
例如我们易于理解为什么，当试图测量一个不可逆系统的总能量，给出的或许。
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All the energies are negative because it is a bound system. I start up here with n equals one.
所有能量级都是负数，因为它是一个束缚系统,在这里我从n等于1讲起。
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It is no longer tethered to the nucleus so there is no energy stored in the system.
它已经不再受原子核的吸引,所以这个系统中没有能量储存了。
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You need energy to move your arms around and move around mechanical systems, obviously, cars, boats, etcetera.
你需要能量,来移动胳膊和走动,机械系统，汽车，船等等。
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All the energy that is inserted into this, which might be turbulence initially, becomes heat, or becomes -- it raises the temperature.
由振动引起的所有，进入系统的能量最后都变成了热，因此温度便升高了。
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The total energy of the system, which we are going to get from postulate number four, which says the energy of the electron, which is the energy of the system, is the sum of the kinetic and the potential energy.
这个系统的总能量，也就是我们将从第四个假设中算出的能量，也就是电子运动产生的能量，也就是整个系统的能量，是动能和位能的总和。
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I have got to put that in because that is a repulsive energy and that is going to decrease the energy of the system.
我必须要说清楚,因为这是一个排斥能,这将要减少这一系统的能量。
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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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So there's less energy expanded by the system.
系统损失的能量也比较小。
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I want to plot energy in the system as a function of interatomic spacing.
我想把这个系统中的能量,按照原子间距来划分。
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It is a conservative system so all the energies are negative.
它是一个保守系统,所以所有的能量级都是负值。
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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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And here, in an isothermal expansion, The bath is putting back the energy that the gas is expanding or using to expand, and so the energy is flowing back into the gas through the environment in the isothermal expansion.
而在等温膨胀中，恒温环境将气体膨胀对外做功,而损失的能量又返还回来，在等温膨胀中,能量从环境,流向系统。
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The ones who would seek out calories, the ones who could store and not waste energy, those with an efficient metabolism-- that is those people who took in calories and banked them into their body fat and stored against subsequent famine-- are the ones who would do the best under these circumstances.
那些寻找能量的人,那些储存而不浪费能量的人,那些有着高效代谢系统的人,那些人可以将摄入的热量储存为机体脂肪,以用于对抗即将到来的饥荒,在早先的情况下他们是最适应环境的
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Remember, because that 1 s orbital is all the way down in terms of if we're thinking about an energy diagram, we're all the way down here, so we have a huge amount of energy we have to put into the system in order to eject an electron.
还记得吧，因为1，s，轨道在能量示意图里,是在最底部的，我们要一直到最下面，所以我们要向这个系统注入非常大的能量,才能打出一个电子。
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I have shown that by taking Avogadro's number of individual ion pairs and putting them all together in a line, the system's energy became more negative.
我推导出了,从每一个离子对中抽出阿伏加德罗常数,再把它们放在一起在一列中，这个系统的能量就变得更负。
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And so the energy is zero because the electron is no longer bound. It is free.
所以这个系统能量为0，因为,电子不再受束缚了，它自由了。
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The first thing we are going to do is describe the energy of the system.
首先我们要做的,是描述这个系统的能量。
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This should make sense to you, because they don't, in fact, want to gain another electron, because that would mean that electron would have to go into a new value of n, a new shell, and that's really going to increase the energy of the system.
这对大家来说应该容易理解，因为它们实际上不想得到另一个电子，因为这意味着这个电子不得不,到一个新的，n，值更大的壳层上去，这将会增加系统的能量。
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So what we'll end up with is boron plus, 1 s 2 2 s 2 1 s 2, 2 s 2, E and what we say is the delta energy or the change in energy as the same thing as saying the energy of the products minus the energy of our reactant here, that's how much energy we have to put into the system to eject an electron.
所以结果应该是正一价的硼，电子排布为，我们说，Δ,也就是，E，的变化量,等于生成物的能量,减去反应物的能量，这就是我们从这个系统中,打出一个电子所需要的能量。
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