You’ve seen them on crime TV shows. You’ll often find them at nightclubs or late-night after-parties. Blacklights. They are cool and really useful to reveal things that are invisible to the naked eye. But you don’t have to be a CSI detective or club owner to have your own blacklight.
All you need is your phone, two Sharpies, and some clear tape, and you’ll be on your way to solve crimes – or not, or have your own private disco in the comfort of your own room. Here’s how’s done:
I never knew you could make this. What a cool trick! I could use this for my next house party. Please share!