Photoelectric Effect Experiment

The photoelectric effect experiment demonstrates how light can cause electrons to be emitted from a metal surface. When light of a certain frequency shines on the metal, it transfers energy to electrons. If the energy is enough, electrons escape the metal’s surface, creating an electric current. This experiment showed that light behaves like particles (photons) with quantized energy, challenging classical ideas and supporting quantum physics. It helped scientists understand the particle nature of light and established the relationship between light energy and frequency.