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Unusual tutorial: create a black light using the iPhone flash

iPhone tutoriel flash lumiere noire - Tutoriel insolite : créer une lumière noire grâce au flash de l

iPhone tutoriel flash lumiere noire - Tutoriel insolite : créer une lumière noire grâce au flash de l

A few days ago, a curious tutorial appeared on the web. It offers turn your iPhone flash (or any other smartphone) in black light, so you can spot dirt and other microbes invisible to the naked eye. For this you will need two markers (a blue and a purple) as well as transparent tape. Put adhesive tape on the flash of your laptop. Take the blue marker and color the scotch tape with the blue marker.

iPhone black light flash tutorial - Unusual tutorial: create a black light using the iPhone flash

Let it dry, then place another layer of scotch tape over the first. Once again, generously color this layer with your blue marker. Finally, place a final layer of adhesive and color it this time with your purple marker.

All you have to do is turn off the light (in your bathroom, for example), to observe a similar result (not very stewing, we grant it) to the photo above. If you have tried the experience at home, we would be delighted to have your feedback on the veracity of this rather unusual experience rather than on the cleanliness of your toilets…