👉 Quantum mechanical is a field of physics that deals with the behavior and interactions of particles at extremely small scales. It has been revolutionized by the discovery of quantum mechanics, which describes how particles behave in ways that are fundamentally different from classical mechanics. The most well-known example is the photoelectric effect, where electrons emitted when light strikes a金属(1)金属(1)金属(1)金属(1)金属(1)金属(1)金属(1)金属(1)