👉 Reagins is a concept in quantum mechanics, which refers to the interaction between particles that exhibit collective behavior. It was first introduced by physicist Richard Feynman in his 1956 paper "Quantum Mechanics and the Quantum World." Reagins has been used to describe the way light interacts with matter at the atomic level. Reagins is a mathematical concept that describes how two particles interact when they are in a state of repulsion. It can be understood as a quantum mechanical