So, you might ask then well what is the significance of shooting different amounts of photons at a metal?

所以，你们可能会问向,金属发射不同数量的光子,有什么重要性？

麻省理工公开课 - 化学原理课程节选

So that means we're going to need to figure out what is the energy per photon that's emitted by that UV light.

所以那意味着我们将需要,计算出从紫外光源发射出的,每个光子的能量。

麻省理工公开课 - 化学原理课程节选

What about the energy of the emitted photons?

发射光子的能量怎么样？

麻省理工公开课 - 固态化学导论课程节选

So this means that we can go directly from the energy between two levels to the frequency of the photon that's emitted when you go between those levels.

这意味着我们可以直接,从两个能级的能量得到它们之间,跃迁发射出光子的频率。

麻省理工公开课 - 化学原理课程节选

So, the take-home message is whether you have three photons or 3,000,000 photons that you're shooting at your metal, if you're not at that minimum frequency or that minimum energy that you need, nothing is going to happen.

所以，这里表明的信息是,无论是向金属发射3个光子,还是300万个光子,如果没有达到所需的最低频率,或者最小能量,什么事情都不会发生。

麻省理工公开课 - 化学原理课程节选

Photon emission, perhaps.

光子发射，可能。

麻省理工公开课 - 固态化学导论课程节选