How to make UV light

SMART PHONES:-

Turn Your Phone Into A Black Light Hack. Its super easy to do!

All it takes is a smartphone with a light, three pieces of small tape and two sharpies. One blue, one purple.

Material:-

1. Smart Phone
2. Scotch Tape
3. Blue Sharpie
4. Purple Sharpie

Methods:-

1. Place a small piece of tape over the LED flash on the back of your iPhone or Android smartphone (will also work on tablets with built-in flashes), which should be close to your rear camera.
2. Color on top of the tape with blue marker so that it covers the flash.
3. Place another piece of tape over top of the flash, and color on top of it with blue marker as well.
4. Place a third and final piece of tape over the flash, but this time color over the flash with your purple marker.
5. You're done! Enjoy the lights