Characteristics of a Photon / what Exactly is a Photon? / Is Photon Chargeless? / A Concise Description of the Photon.

Abstract

The Photon which is a fundamental entity of electromagnetic radiations is a boson. According to Maxwell equations, it is nothing but an electric field which propagates through space with the speed of light and produce orthogonal magnetic field during its movement. Photoelectric effect and Compton effect suggested its particle nature. In this review paper, it is tried to build a comprehensive and concise description of photon. Various theories and results are indicated to generalize specific properties of the photon. Quantum entanglement, bunching effect, comparison of photon with hypothetical particle Graviton, pair production, Schwinger effect, photon-photon collision and polarization of photons are some remarkable phenomena that are related to photon; these terms are concisely explained in this review article. These phenomena are not only vital for future technology but also will have the central key for our understanding of the sub-atomic world.