Is there a cutoff frequency below which electrons aren't ejected from the metal, no matter how long you wait?

是否有一个截止电压，无论您等待多长时间，都不会从板中提取电子？

Turns out, there is a cutoff frequency, and the higher the frequency is above the cutoff, the higher the maximum kinetic energy is of the electrons.

原来，有一个截止频率， 高于截止频率的频率越高，电子的最大动能就越高。