Question

what is infrared radiation

Answer 1

Infrared radiation is electromagnetic radiation with longer wavelengths than those of visible light, and is therefore invisible to the human eye. It is sometimes called infrared light.

Answer 2

infrared radiation is a type of electromagnetic radiation as are radio waves , ultra violet radiation, and microwave. IR light is the part of EM spectum that people encounter most in everyday life, although much of it goes unnoticed. it is invisible to human eyes , but people can feel as heat