title: Detect UV light with iOS Camera
body: <p>Is there a way to detect the UV ray from the iPhone camera without any hardwares? I don't want to find the exact UV index of the light. </p>
  
  <p>I tried to take a photo from a UV light, but if I analyse that photo, I can only get the RGB pixels. How do I get to know that the photo is taken from UV light? How do the photos taken from the UV light, are differ from the photos taken in the normal light?</p>
  
  <p>I found an app called GammaPix in the app store which says it could detect the radio activity in an area by using only the camera. I want something like that to detect the UV rays.</p>