Black lights may look just like normal fluorescent lamps or incandescent light bulbs , but they do something completely different. Switch one on, and white clothes, teeth and various other things glow in the dark. You may have also seen pieces of paper that look blank in regular light but spell out a glowing message under a black light. In this article, we'll find out exactly what's going on here. We'll also see why black lights make some objects glow but not others, and we'll look at some interesting black light applications. If you turn on a black light bulb in a dark room, what you can see from the bulb is a purplish glow. What you cannot see is the ultraviolet light that the bulb is also producing.
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Black Lights and Ultraviolet Lamps
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Have you ever wondered what a black light is? Did you know there are different types of black lights? Here's a look at what black lights are and how you can find and use a black light. A black light is a lamp that emits ultraviolet light.