Luminescence is the visible light emitted by a surface when it is exposed to invisible radiation, such as ultraviolet (UV) light, X-rays, or other forms of energy. Unlike fluorescence, which stops immediately when the radiation source is removed, luminescence continues to emit light gradually, fading over time.
Understanding luminescence is important for photographers, scientists, and imaging professionals working with special effects, forensic imaging, or scientific photography. It helps in capturing unique lighting phenomena, studying materials under different radiation sources, and creating images that reveal details invisible under normal lighting conditions.