Question

what is a photon
GPT 3.5
A photon is a quantum of electromagnetic radiation. It is the fundamental particle of light and carries energy and momentum. Photons have zero mass, travel at the speed of light, and can exhibit both particle-like and wave-like properties, depending on the situation. They are described by the theory of quantum electrodynamics and play a crucial role in various phenomena, such as the photoelectric effect and the transmission of information in technologies like fiber optics and lasers.