👉 Phosphoreal is a concept in physics that describes a system where light travels through matter at speeds of light. This contrasts with the classical view of light as a wave, which has lower frequency and shorter wavelength than electromagnetic waves. The term was coined by physicist Richard Feynman in his 1965 paper "Quantum Mechanics: A Modern Approach," where he used it to describe how light could be treated as part of a system that is both an electric current and a magnetic field at