When many people think of UV lights or black lights, they think of posters in college dorm rooms, or spooky Halloween displays. Ultraviolet light, however, is an important subject of scientific study. Occupying the segment of the electromagnetic wavelength spectrum between 10 nm and 400 nm, Ultraviolet light is invisible to the human eye. UV lights are often referred to as "black" lights because of this. We have many fun and instructional examples of the power of ultraviolet light. From nail polish and Spy Pens to our always popular Ultraviolet Detecting Beads and Fluorescent Minerals, these fantastic products can also be integrated into activities with our selection of UV lights.