Photoelectric Effect Experimental Setup

Emitter Collector hν photons photoelectrons ($e^{-}$) G V Millikin's photoelectric experiment setup

Energy Level Diagram — Photoelectric Effect

Surface φ = hν_{0} (work function) Vacuum level hν (photon) KE_max = hν − φ $e^{-}$ $e^{-}$ ejected Energy Conservation in Photoelectric Effect