Infrared radiation

Infrared radiation is a form of electromagnetic radiation with longer wavelengths than visible light but shorter than microwaves. It lies between visible light and microwave radiation in the electromagnetic spectrum.

Infrared radiation is not visible to the human eye because its wavelengths are outside the range it is capable of perceiving. Its spectrum is divided into three main categories:

Near Infrared (NIR): This is the closest to visible light in the infrared spectrum. Wavelengths range from about 0.75 micrometers to 1.5 micrometers.

Mid Infrared (MIR): This part of the infrared spectrum has wavelengths from about 1.5 micrometers to 5 micrometers.

Far Infrared (FIR): This is the farthest part of the infrared spectrum with wavelengths from about 5 micrometers to 100 micrometers.

Infrared radiation is important to many fields, including physics, engineering, medicine, and thermography. Its use is found in many applications such as thermal imaging, remote control, security systems, therapeutic and diagnostic devices in medicine and more. Infrared radiation is also used in industry for heat detection, temperature controls, drying, heating and many other applications.