OK, it's not really a black light. It's better to call it what it is: ultraviolet light. Let's start with a quick overview of light. Of course, light is an electromagnetic wave (oscillating electric ...

UV won't blind you any faster than any other light, it just increases the risk of cataracts (since the UV light is partially absorbed by then lens in your eye).

Streamlight Inc.'s rechargeable Stylus Pro USB UV, a sleek, compact penlight that provides ultraviolet (UV) light for detecting engine or HVAC leaks, fraudulent documents, or for use in forensic ...