Being in a warmer environment,up to a point, will lead to decreased energy expenditure and therefore, at the same amount of food intake,weight gain."

VOA: special.2010.12.21

And in this case we're going to look at silicone, and we'll say if you can point out to me which requires the least amount of energy.

这次我们要做的是关于硅的，我们来看看大家是不是,能够为我指出那一项需要消耗的能量最少。

麻省理工公开课 - 化学原理课程节选

The electron's going to come out of that highest occupied atomic orbital, that one that's the highest in energy, because that's going to be the at least amount of energy it needs to eject something.

这个电子应该是从,最高的被占据轨道上出来的，它的能级是最高的，因为这样的话发射出它,只需要消耗最少的能量。

麻省理工公开课 - 化学原理课程节选

A BTU is the amount of heat energy needed to raise the temperature of about one-half kilogram of a substance by one degree Fahrenheit.

VOA: special.2010.11.23

Milton has expended, we know, a considerable amount of energy in establishing what he wants us, I am assuming, to believe is the divine authority behind the poem.

我们知道弥尔顿花费了，大量精力阐释他希望我们相信的东西，我设想，他要我们相信在这部诗篇的背后有无上神权的存在。

耶鲁公开课 - 弥尔顿课程节选

And the closer it gets to the nucleus the greater the amount of energy, which means that you see this in the following manner.

而电子离原子核越近,能量值就越大，这就意味着你以下面的方式看到这些。

麻省理工公开课 - 固态化学导论课程节选

So it's the amount of energy, usable energy for the body that a food provides.

所以卡路里是能量的总额,食物所提供的被人体吸收的能量

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

For birds and mammals, we don't have many kids but so we devote a huge amount of psychological energy to protecting the ones that we have.

鸟类和哺乳类，没有很多孩子,所以我们用大量的心力,去保护我们有的孩子。

耶鲁公开课 - 心理学导论课程节选

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。

麻省理工公开课 - 化学原理课程节选

So in the case of 12 32, that is our highest kinetic energy, it's the smallest amount of energy it takes to pop an electron out of that orbital.

因此，1232是我们能够得到的,最高的动能，它是从这个轨道中,打出一个电子需要消耗的最低能量。

麻省理工公开课 - 化学原理课程节选

It makes sense that it's going to come out of the highest occupied atomic orbital, because that's going to be the lowest amount of energy that's required to actually eject an electron.

从最高占据轨道上,去掉一个电子是合理的，因为这样是发射一个电子,所损失的最低能量。

麻省理工公开课 - 化学原理课程节选

And what we have left over is this amount of energy here, which is going to be the kinetic energy of the ejected electron.

都用来发射它,剩下的这些就是,出射电子的动能。

麻省理工公开课 - 化学原理课程节选

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。

麻省理工公开课 - 化学原理课程节选

And that amount of energy will be subtracted.

那些能量将会被消耗掉。

麻省理工公开课 - 固态化学导论课程节选

So if we're going to eject an electron using a minimum amount of energy, that's where it's going to come from.

因此，如果我们要用最少的能量,激发出一个电子，那这个电子一定是，2，p，轨道上的。

麻省理工公开课 - 化学原理课程节选

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。

麻省理工公开课 - 化学原理课程节选

And if that is the energy to go from n equals one n=2 this is the amount of energy that has to be left as kinetic energy of the electron.

如果这个能量是从n=1到,然后，to，n，equals，two，then,这些能量,会作为电子的动能,被消耗掉。

麻省理工公开课 - 固态化学导论课程节选

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。

麻省理工公开课 - 固态化学导论课程节选

So, remember what we're talking about here is the amount of energy that's in each photon.

所以，记住我们这里谈论的是,每个光子的能量值。

麻省理工公开课 - 化学原理课程节选

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。

麻省理工公开课 - 固态化学导论课程节选

So that's the important take-away message from this slide. If we think about these different types of lights, microwave light, if it's absorbed by a molecule, is a sufficient amount of frequency and energy to get those molecules to rotate. That, of course, generates heat, so that's how your microwaves work.

重要的信息，如果我们看看,这些不同种类的光，微波,如果被分子吸收，它的频率和能量可以,使分子转动,这当然的，会产生热量,这就是你们微波炉的工作原理。

麻省理工公开课 - 化学原理课程节选