UV (Ultra Violet) light, also known as “black light,” emits electromagnetic radiation almost exclusively in the soft near ultraviolet range causing some items to fluoresce. White clothes, teeth, etc. glow in the dark while other objects look exciting and unusual depending upon how much they reflect UV. This is the perfect light to use for creative effects in clubs or venues which have been purposely decorated with fluorescent materials or actors or attendees wearing special makeup for artistic effect. This Chauvet 18" Blacklight is an ideal size for lighting small areas or checking fluorescent entry stamps.