So our last question we ask is what's the total number of photons emitted if we give this given intensity for 60 seconds?
最好的问题是如果我们,按照给定的强度照射60秒,那么总的光子数是多少?
But we're going to irradiate it with two different light sources.
但是我们将用两种,不同的光源照射它。
So, for example, here we're showing rubidium and potassium and sodium plotted where we're plotting the frequency -- that's the frequency of that light that's coming into the metal versus the kinetic energy of the electron that's ejected from the surface of the metal.
让大家看来都是可以理解的事情,就是把不同金属的观测结果,画到一张图里面来,例如这里,我们展示的是钠,钾,铷的频率-这是照射金属的光的频率,和金属表面出射电子动能的关系。
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