UV Light using a flashlight and colored dividers
To make a UV flashlight, buy a pack of clear colored binder dividers with the colors purple and blue. Find a cool white led flashlight and some tape.
First cut out 2 squares of the blue sheet that covers the leds and cut out one square of the purple sheet that also covers the leds. Then tape the cut out squares in the order of purple-blue-blue (like in the photo on the left corner). Tape the pack of squares onto the led face of the flashlight with the purple square farthest from the leds and the blue is closest to the leds, making sure all the leds are covered.
Turn on the flashlight and the output should be a dark blue light. To test it out write on a piece of paper with fluorescent highlighter (yellow is preferred), then go in a dark room and shine the sheet with the uv flashlight and the highlighter areas should glow. It should look similar to below:
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| Highlighter under DIY UV Light |
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| Highlighter under regular light |
This diy uv light isn't the same type of quality as high grade uv lights. This light can only show general things that glow.
