Much easier if I just write it without the given templates. Well, I am not exactly the good at Physics, so I've decided to ask people that are good at it. I know Ekmax = hf - work function. I am just wondering what could prevent the electron from attaining it's maximum kinetic energy. Oh, wait. Is it just that Ekmax is for the electrons on the surface and not the ones further in the metal? So the electrons further in have a kinetic energy of less than Ekmax? Thank you, Stephen.