Introduction

Infrared radiation is an important part of the electromagnetic spectrum, which includes radio waves, microwaves, visible light, ultraviolet light, X-rays, and gamma rays. Infrared radiation is divided into two categories: far infrared and near infrared. Both types of infrared radiation have unique properties and are used in various applications. In this article, we will explore the differences between far infrared and near infrared radiation.

Understanding Infrared Radiation

Infrared radiation is a type of electromagnetic radiation that has a longer wavelength than visible light. It is invisible to the naked eye but can be detected by special sensors. Infrared radiation is produced by all objects that have a temperature above absolute zero (-273.15°C or -459.67°F). The higher the temperature, the more intense the infrared radiation.

Far Infrared Radiation

Far infrared radiation has a longer wavelength than near infrared radiation. It has a wavelength range of 15-1000 microns and is often referred to as thermal radiation. Far infrared radiation is emitted by warm objects, such as the human body, animals, and the sun. It is also emitted by infrared heaters, which are used for therapeutic purposes. Far infrared radiation has many health benefits, including improving blood circulation, reducing inflammation and pain, and boosting the immune system.

Near Infrared Radiation

Near infrared radiation has a shorter wavelength than far infrared radiation. It has a wavelength range of 0.75-1.4 microns and is often referred to as non-thermal radiation. Near infrared radiation is emitted by LEDs (light-emitting diodes) and is commonly used in medical and cosmetic applications. Near infrared radiation is also used in remote controls, fiber optic communications, and night vision devices.

Applications of Far Infrared Radiation

Far infrared radiation has many applications in various fields. In the medical field, far infrared radiation is used for pain relief, wound healing, and detoxification. In the agricultural field, far infrared radiation is used to promote plant growth and to reduce the use of pesticides. In the construction industry, far infrared radiation is used for heating buildings and for drying paint. Far infrared radiation is also used in the manufacture of ceramics, glass, and plastics.

Applications of Near Infrared Radiation

Near infrared radiation is used in a variety of applications, including medical, cosmetic, and industrial. In the medical field, near infrared radiation is used for skin rejuvenation, wound healing, and pain relief. Near infrared radiation is also used in the cosmetic industry for hair removal, skin tightening, and cellulite reduction. In the industrial field, near infrared radiation is used for material processing, such as welding, cutting, and soldering.

Conclusion

Far vs near infrared radiation have different properties and are used in various applications. Far infrared radiation has a longer wavelength and is emitted by warm objects, while near infrared radiation has a shorter wavelength and is emitted by LEDs. Both types of infrared radiation have many health and industrial applications and are important parts of the electromagnetic spectrum.