Definition: Poincare, in physics, is an area where two bodies interact with each other. It involves the study of interactions that are very small compared to the scale of macroscopic phenomena. Definition: "Point charge" refers to a point mass with some electric field. "Poincare quantization" refers to quantizing the electric field due to a single point charge, which is crucial in quantum mechanics and quantum physics. This concept was proposed by Albert Einstein in 1905, but it wasn't until later that it gained widespread attention when physicist Hermann Minkowski published his "Minkowski space" model in 1916.