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Step 4: Extra: other uses

Picture of Extra: other uses
flashlight.jpg
Know when there is too much infrared waves in the area (the led will glow like mad!)
there are various experiments to try with this eg point a different red LED at it and see if  makes infrared waves, how about a flashlight?
This was just a fun experiment to do when your bored and has no actual usage and if it does its by coincidence i apologize for your wasted time XD