Lecture
This lecture covers the quantum nature of radiation, the momentum of the photon, and the photoelectric effect. It explains the limits of classical physics and why quantum effects are not observed in everyday life. The instructor discusses the photoelectric effect phenomenon, its applications in solar energy, and the detailed process of electron emission from a metal plate under UV radiation. The lecture also delves into the interpretation of the photoelectric effect by Einstein, the energy balance involved, and the general observations related to the effect. Additionally, it explores the change of intensity, frequency, and material in the context of the photoelectric effect.