If you grew up in the 90s you probably remember the neon glow of black lights, which were popular at the time. Maybe you had one in your bedroom, a friend had one, or somewhere local basked its halls in the bold hues. You can still find them today, though theyre not as prevalent, in indoor minigolf parks, laser tag venues, arcades, and so on. But there another more practical use for them in the form of a flashlight. Black light flashlights, technically UV flashlights, are nothing more than...
