- #1
Trajork
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- 0
So, I was playing around with remote controls last night and realized that, under the right conditions, I could see a very faint, blinking red glow from the LED that transmits signals to the TV when I held down a button. Looking this up, it appears that most such LED's shine at 940 nm, which is far outside the visible spectrum. What's going on here? Are those LED's not very monochromatic, or is it actually possible to see (however poorly) well into the near IR?