Quantum Mechanics

overview

Summary

Quantum mechanics is the fundamental theory of nature at atomic and subatomic scales. It describes how physical systems are represented by states in a complex vector space, how measurable quantities correspond to operators, and how probabilities arise from wavefunctions and their evolution. Core ideas include superposition, uncertainty, quantization, and entanglement, with dynamics governed by the Schrödinger equation. Quantum mechanics underpins modern physics and technology, including atomic physics, semiconductors, lasers, spectroscopy, quantum information, and the foundations of chemistry.