What is Quantum physics?
Quantum physics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum information science. Classical physics, the collection of theories that existed before the advent of quantum mechanics, describes many aspects of nature at an ordinary scale, while quantum physics explains the aspects of nature at very small scales. Most theories in classical physics can be derived from quantum mechanics as an approximation valid at large (macroscopic) scale. Quantum mechanics differs from classical physics in many ways, including: Quantization: energy, momentum, angular momentum, and other quantities of a bound system are restricted to discrete values. Wave-particle duality: objects have characteristics of both particles and waves. The uncertainty principle: there are limits to ...