👉 Demonstrated-light-particle theory posits that light is composed of discrete, particle-like entities known as photons. This concept, first proposed by Albert Einstein in 1905 to explain the photoelectric effect, suggests that light energy is quantized and travels in packets or particles, each carrying a specific amount of energy proportional to its frequency. Unlike the classical wave theory of light, which describes light as a continuous wave, the particle model explains phenomena such as light's ability to eject electrons from metals (photoelectric effect) and its discrete interactions with matter. Experiments like the Compton scattering and the double-slit experiment with single photons have further validated this particle nature, showing that light can exhibit both wave-like and particle-like behaviors depending on the experimental setup. This dual nature of light—both wave and particle—forms the foundation of quantum mechanics and has profound implications in fields such as optics, photonics, and quantum computing.
