What is wave-particle duality of light?
It refers to the fact that all particles or quanta can be partly described in particle terms and partly in wave terms.
In the past life, this meant that the classic concepts of "particle" and "wave" lost the ability to fully describe the physical behavior within the quantum realm!
This is a disruptive achievement!
In classical mechanics, research objects are always explicitly divided into "pure" particles and "pure" waves. The former constitutes what we often call "matter," and a typical example of the latter is light waves. Wave-particle duality solved the dilemma of these "pure" particles and "pure" waves.
It provides a theoretical framework that allows any matter to sometimes exhibit particle properties and sometimes wave properties.
Quantum mechanics suggests that all particles in nature, such as photons, electrons, or atoms, can be described by a differential equation, such as the Schrödinger equation.
