Ultraviolet LEDUltraviolet LedA UV torch light emits ultraviolet radiation a type of light energy that is not visible to the human eye. When ultraviolet light hits certain objects, they can fluoresce a phenomenon similar to a bright glow. Many objects and substances such as paints, dyes, minerals, animals and body fluids exhibit fluorescence, which means that the presence of these things can be detected only when a UV light source shines on them. Students can