INFRARED
The long wave, electromagnetic radiation of radiant heat emitted by all hot objects. On the electromagnetic spectrum, it can be found between microwave radiation and visible light. Water vapor, ozone, and carbon dioxide are capable of absorbing or transmitting infrared radiation. May be referred to as IR.
Electromagnetic radiation with wavelengths between visible red light and microwaves; it ranges from 750 to 1 million nanometers (1 millimeter). Infrared is subdivided into near (NIR, 750 to 2,500 nanometers), middle (MIR, 2,500 to 30,000 nanometers), and far (FIR, 30,000 to 1 million nanometers). [See also radiation].
