Quantum mechanics can describe many systems that classical physics cannot. Classical physics can describe many aspects of nature at an ordinary (macroscopic and (optical) microscopic) scale, but is …

Dec 18, 2025 · Quantum mechanics, science dealing with the behavior of matter and light on the atomic and subatomic scale. It attempts to describe and account for the properties of molecules and atoms …

Nov 29, 2000 · The heart and soul of quantum mechanics is contained in the Hilbert spaces that represent the state-spaces of quantum mechanical systems.

Jul 26, 2025 · As quantum theory advanced, physicists began to see particles not as tiny billiard balls, but as excitations in quantum fields. Every type of particle—electron, quark, photon—is a ripple in its …

The field of quantum mechanics deals with the most fundamental bits of matter, energy and light and the ways they interact with each other to make up the world.

What is Quantum Mechanics? Quantum mechanics is a branch of physics that deals with the behavior of particles on the smallest scales—such as atoms, electrons, and photons.

Quantum mechanics is a powerful framework for understanding the motions and interactions of particles at small scales, such as atoms and molecules. The ideas behind quantum mechanics often appear …