Now what I want to do is put up a specific example of the cycle that can be undertaken inside here in an engine, and we can just calculate from what you've already seen of thermodynamics.

现在我想做的是,举一个例子,来具体说明热机内部的循环过程，同时我们可以利用热力学定律进行计算,看看热力学参量发生了什么变化。

麻省理工公开课 - 热力学与动力学课程节选

So really what we'll probably do is instead either give you the wavelength or the frequency and you'll go ahead and calculate the energy from there.

所以实际上我们可能的做法是,给你波长或者频率,然后你可以通过他们计算得到能量。

麻省理工公开课 - 化学原理课程节选

This is going to be probably a homework at some point to do this. For now, let's take it for granted. Let's take it for granted that we know how to calculate this derivative from an equation of state like this.

这可能是将来的一个课后作业,现在，请把这当成理所当然的，理所当然地认为我们,知道怎样从一个状态,方程计算这样的微分式。

麻省理工公开课 - 热力学与动力学课程节选

And I can calculate this from Bohr model.

同样我也可以用波尔模型算出它来。

麻省理工公开课 - 固态化学导论课程节选

The purpose here is to look at a series of processes in which temperature is held constant, and we're going to calculate how much work we get from allowing a gas to expand under various conditions.

目的是让大家了解一下,几个保持温度不变的过程，然后我们将计算,气体在不同膨胀过程中,的对外做功。

麻省理工公开课 - 热力学与动力学课程节选

Just like u, we'd like to be able to express it in a way that allows us to calculate what happens only from equation of state data.

就像内能u一样，我们希望能够利用状态方程的数据,计算出其表达式,这些表达式能方便我们说出即将发生的过程。

麻省理工公开课 - 热力学与动力学课程节选

We want to have that definition clear because in fact we're going to, we might want tabulate heats of reaction, right, and of course want to know what the conditions are for the tabulated values apply. And we're going to want to calculate them from other quantities and again, we're going to need to know each case what are the relevant conditions?

我们想要明确这个定义,因为实际上我们会想把,反应热制成表格，当然我们会,想知道表中的数据在什么样的,条件下是有效的，我们会,想要从其他的量中算出它们,再一次，我们需要知道,每种情形下相关的条件是什么？

麻省理工公开课 - 热力学与动力学课程节选

So now, then we're going to use what we're going to learn from step two in order to calculate III this part, what we could call step three.

现在我们要用从步骤II中,得知的东西来计算这个部分,我们可以叫它步骤。

麻省理工公开课 - 热力学与动力学课程节选

So in principle, if I measure how much hotter, I can determine how much heat was produced, and from that, I should be able H to calculate delta H at T1.

所以原则上，如果我测量，变热了多少，我就能确定，有多少热被产生,从中我就可以计算T1下的Δ

麻省理工公开课 - 热力学与动力学课程节选

So what we'll do is this problem here, which is let's calculate out what the wavelength of radiation n would be emitted from a hydrogen atom if we start at the n equals 3 level and we go down to the n equals 2 level.

我们来做这个问题,让我们来计算一下,从n等于3到,等于2能级氢原子辐射的波长是多少。

麻省理工公开课 - 化学原理课程节选

OK, in a few weeks, you're going to find out that we can calculate dH/dp from this equation of state, and you're going to find p out that dH/dp from that equation of state b-a/RT is proportional to b minus a over RT.

好，在接下来几个星期里,你们将知道从这个状态方程,可以计算出偏H偏p，并且你们会发现,从这个状态方程得到的偏H偏,正比于。

麻省理工公开课 - 热力学与动力学课程节选