How are infrared waves produced ? Why are these referred to as .heat waves. ? Write their one important use.

Explanation

Infrared waves are produced by hot bodies and molecules on account of vibrations of atoms and molecules.
Infrared waves are referred to as heat waves because water molecules present in most materials readily absorb infrared waves. After absorption, their thermal motion increases, that is, they heat up and heat their surroundings.
Infrared radiation play an important role in maintaining the earth.s warmth or average temperature through the greenhouse effect. Infrared detectors are used in earth satellites for remote sensing purposes.