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。

麻省理工公开课 - 化学原理课程节选

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？

麻省理工公开课 - 固态化学导论课程节选

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。

麻省理工公开课 - 热力学与动力学课程节选

You get things in the energy of the room with so many students so you wouldn't just get from your computer.

和大家一起，在课堂的气氛中学习,而不是仅仅对着电脑。

哈佛公开课 - 幸福课课程节选

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。

麻省理工公开课 - 化学原理课程节选

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。

麻省理工公开课 - 固态化学导论课程节选

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。

麻省理工公开课 - 固态化学导论课程节选

That is going to equal the energy of the electrons in H2 minus the energies of the electrons in H.

这等于H2分子的能量2,减去H原子中电子的能量。

麻省理工公开课 - 固态化学导论课程节选

And so what I get is the energy of the system at the equilibrium separation is given by minus z plus.

这就是通过减去z+得到得平衡分离时,我得到的能量体系。

麻省理工公开课 - 固态化学导论课程节选

The first that we need to know the energy of the photon that's incident on our gaseous atom.

首先，我们需要知道,入射到气体原子的光子的能量。

麻省理工公开课 - 化学原理课程节选

And what we predict as an energy difference between two levels, we know should correspond to the energy of light that's either emitted, if we're giving off a photon, or that's absorbed if we're going to take on a photon and jump from a lower to a higher energy level.

我们预测，两个能级之间的能量差，我们知道，它要么和发出的光有关,如果它发出光子的话，要么它吸收光子,从低能级跃迁到，更高能级上去。

麻省理工公开课 - 化学原理课程节选

You know, if you want to measure the potential energy of something in a gravitational field, you have to define the zero somewhere, right, because it's arbitrary. You can set it anywhere you want. It's the same with enthalpy.

你知道，如果你想测量重力场,中某种东西的势能，你需要，在某处定义一个零点，对吧？,因为势能的值是任意的,你可以把它设定在。

麻省理工公开课 - 热力学与动力学课程节选

But he said the energy of an X-Y bond is going to be equal to the square root.

但他说ＸＹ键的键能,会等于ＸＸ键与ＹＹ键键能乘积的平方根。

麻省理工公开课 - 固态化学导论课程节选

Well, the energy of the photon, hv we know from Planck, is h nu, which is hc over lambda.

好吧，光子，我们从普朗克那得知，它是，即hc/lambda，波长。

麻省理工公开课 - 固态化学导论课程节选

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。

麻省理工公开课 - 固态化学导论课程节选

So this is the energy of a single ionic bond.

这就是单离子键的能量。

麻省理工公开课 - 固态化学导论课程节选