So when I expand this gas adiabatically and it cools down, why do you think it might cool down?

现在我们知道了气体绝热膨胀时,温度会下载，为什么会降温？

麻省理工公开课 - 热力学与动力学课程节选

All right, so let's go back to electrons configurations now that we have an idea of why the orbitals are listed in the energy that they are listed under, 2p why, for example, the 2 s is lower than the 2 p.

好的我们返回来到电子构型,现在我们有一个思路知道,为什么轨道,以能量列出来，举个例子2s低于。

麻省理工公开课 - 化学原理课程节选