Photoelectric effect in science definition and examples

Today, we embark on a journey into the intriguing world of the photoelectric effect. First discovered by Heinrich Hertz in 1887 and later explained by Albert Einstein in 1905, this phenomenon has continued to captivate scientists for over a century. At its core, the photoelectric effect refers to the emission of electrons from a material's surface when it is exposed to light. While seemingly simple, its implications are profound, revolutionizing our understanding of quantum mechanics and laying the foundation for numerous technological advancements.