Quantum Mechanics Theory

Quantum mechanics is the branch of physics that studies the behavior of very small particles, like electrons and photons, which often behave in ways that defy classical intuition. It reveals that particles can exist in superpositions of states, meaning they can be in multiple states at once, and are fundamentally probabilistic rather than deterministic. Quantum Electrodynamics (QED) is a part of quantum mechanics that specifically deals with how light and matter interact. It describes these interactions through the exchange of particles called photons, providing a framework that explains phenomena like the emission and absorption of light, with remarkable precision.