[christianD]

Hey. I'm doing a project for school on the photoelectric effect and I wanted to investigate the photoelectric effect. I need to find:
a) One metal with a lower work function, in foil form.
b) A source of light, probably UV

both need to be stable and safe.

Any suggestions?

By the way, hf > ø, so f must be greater then the work function, ø, divided by planks constant (and q, the charge of an electron, to get the right units)

So if anyone could point me in the right direction that would be awesome