Lighting refers to the provision of illumination, utilizing electromagnetic radiation primarily within the visible spectrum. From a physical science perspective, the properties of light, including intensity, spectrum, and angle of incidence, determine how effectively it interacts with matter. In technology, artificial lighting sources are engineered using various methods, such as electrical discharge or semiconductor junctions, to emit controlled amounts of light energy. The efficient design and deployment of lighting systems are critical for tasks ranging from structural illumination and safety warning to specialized applications in biological research and industrial processes, aiming to optimize visibility while minimizing energy consumption.