The math works perfectly. The interpretation has never been settled. Quantum mechanics is the most accurate theory in physics and nobody fully agrees on what it means.
Quantum mechanics describes how matter and energy behave at the smallest scales — atoms, electrons, photons. It predicts results to absurd precision. It also produces conclusions that look insane: particles in two places at once, instant correlations across galaxies, the act of observation changing reality.
Every modern technology — computers, lasers, GPS, MRI scanners — depends on quantum theory being right. We use it constantly. We still don't agree on what it actually says about the underlying world.
These verified facts cover the experiments, principles, paradoxes, and applications of quantum theory — including the strange ones we've verified in the lab even though they violate everyday intuition.
Below: every fact from our verified archive that touches this topic. Each is independently sourced; click through to its dedicated page.