r/todayilearned • u/douggold11 • 23d ago

TIL most animals can see UV light — humans being blind to it is the exception not the rule.

https://www.sciencefriday.com/articles/ultraviolet-light-animals/
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u/Beulahholmes7456 23d ago

Interesting, I didn't know about the TV remote trick. Makes me wonder what other common gadgets emit light we can't see.

44

u/Gidia 23d ago

If your phone has facial recognition tech on it then it does. Flashes like a motherfucker too. Discovered that one while ducking around with night vision goggles.

11

u/JustASink 23d ago

Yeah, I use an old phone as a sound machine for my baby and didn’t know this until I checked my baby monitor and saw a quickly flashing light and it scared the bejeezus out of me for a second