What Is Quantum Physics? The Science of the Very Small

Quantum physics studies nature at the tiniest scales—atoms, electrons, and particles even smaller.
Unlike everyday objects, quantum particles can act as both waves and particles.
Superposition means particles can exist in multiple states at once until observed.
Quantum entanglement links particles so strongly that measuring one affects the other instantly.
Heisenberg’s uncertainty principle says you can’t know both a particle’s position and speed exactly.
Quantum tunneling lets particles pass through barriers they seemingly shouldn’t cross.
This field underlies technologies like lasers, MRI machines, and quantum computers.
Quantum physics defies classical intuition, often described as “weird” or “spooky.”
Despite its strangeness, quantum theory is one of the most experimentally verified sciences.
At its core, quantum physics explains how the universe works at its most fundamental level.