Why do remote controls use infrared light instead of other wavelengths?
In: Technology
The remote control is actually a pretty bright blinking light. People hate bright blinking lights, especially in very dark rooms. By using infrared, the light can be bright, yet invisible to human perception.
Infrared can also use a black piece of plastic for filter out visible light, while passing the infrared light through it, as if it were clear, so noise can be filtered out.
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