Question

why are infrared rays called heat waves

Answer 1

this variations increases the internal energy and temperature of structure which is why infrared are called heat waves.

Answer 2

Answer:

infrared waves:

applications:

they are used for communication between devices that are not very far from each other such as in remote controls of your TV sets , etc.

infrared waves are used in photography. digital cameras are using infrared blockers very oftenly.

characteristics:

it can work only for short distances and it cannot penetrate walls.

it is affected by distance,noise and heat.

normally operates between two devices at a time.