Infrared radiation and visible radiation?

Answer:
Visible radiation (a.k.a. light) is the wavelengths we can see. Infrared radiation lies down below the red end of the spectrum that we can see, hence infra red. But we can make device that both generate and detect infra red radiation. Your TV control works this way.
First answer by Suma rongi. Last edit by Suma rongi. Contributor trust: 157 [recommend contributor recommended]. Question popularity: 1 [recommend question].