theory of quantum mechanics

Quantum mechanics is the branch of physics that studies how tiny particles like atoms and electrons behave. Unlike everyday objects, these particles can exist in multiple states at once (superposition), and their properties are described by probabilities rather than definite values. They can also become entangled, meaning the state of one instantly influences another, no matter the distance. This theory explains phenomena like atomic energy levels, light behavior, and the foundational principles behind technologies such as semiconductors and quantum computers, revealing a universe that operates differently at microscopic scales than our everyday experience suggests.