Definitions, axioms and key concepts of quantum physics
Quantum mechanics, or quantum physics, is a set of scientific laws that describe the strange behavior of photons, electrons, and other subatomic particles that make up the universe. On the smallest scales, the universe behaves very differently from the everyday world we see around us. Quantum mechanics is the branch of physics that describes this strange behavior of microscopic particles—atoms, electrons, photons, and almost everything else in the molecular and submolecular realm.