And we are going to use the Pauli Exclusion Principle and we are going to use the fact that we fill from lower energy to higher energy.

我们将会用到泡利不相容定律,而且我们准备利用这个事实,那就是我们从低能级到高能级填充。

麻省理工公开课 - 固态化学导论课程节选

We start at this lower energy state and go up that means we need to absorb a photon, we have to take in energy.

我们从一个低能级开始，到一个高能级去,这意味着需要吸收一个光子，我们要获得能量。

麻省理工公开课 - 化学原理课程节选

we start high and go low, we're dealing with emission where we have excess energy that the electron's giving off, and that energy is going to be equal the energy of the photon that is released and, of course, through our equations we know how to get from energy to frequency or to wavelength of the photon.

当我们从高到低时，我们说的,是发射,电子有多余的能量给出，这个能量等于，发出,光子的能量，当然我们可以通过方程,从能量知道，光子的频率，和波长。

麻省理工公开课 - 化学原理课程节选

And hybrid orbitals are all going to be completely equal, and lower in energy than the p orbital.

杂化轨道是完全相等的，你会注意到它们的能量比s轨道高，比p轨道低。

麻省理工公开课 - 化学原理课程节选