Weird Thought

If you held your phone to your face on your front facing camera, and you are sat in darkness, then the camera is only going to see darkness and make nothing of it. If you held a light to your face momentarily whilst doing this, then the camera will be able to see the light on your face. When you remove this external light source, your face will continue to be lit up due to the screen of your phone now giving off light. Though both of these scenarios end up having the same conditions, they  both have different outcomes 


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