kaukoinfrapunaiselta

Kaukoinfrapunainen, often shortened to FIR (Far Infrared), refers to a specific portion of the infrared electromagnetic spectrum. This region is characterized by wavelengths longer than those of near-infrared and mid-infrared radiation, typically ranging from approximately 15 micrometers to 1 millimeter. In terms of energy, far-infrared radiation is at the lower end of the infrared spectrum.

This type of radiation is primarily associated with heat emission from objects. All objects with a temperature above absolute zero emit thermal radiation, and for objects at room temperature or slightly above, a significant portion of this emitted radiation falls within the far-infrared range. For instance, the human body emits radiation primarily in this band.

Far-infrared radiation has applications in various fields. In astronomy, it is used to study cooler celestial objects like dust clouds and protoplanetary disks, which do not emit visible light but radiate strongly in the far-infrared. In thermal imaging, specialized cameras can detect far-infrared radiation to visualize temperature differences in objects, useful for applications ranging from building insulation checks to medical diagnostics.

Furthermore, there are claims regarding therapeutic benefits of far-infrared radiation, such as promoting relaxation and improving circulation. These applications often involve specialized devices designed to emit FIR waves. The scientific evidence supporting some of these health claims is still under investigation and varies in robustness. Overall, far-infrared radiation is a significant part of the electromagnetic spectrum with diverse scientific and technological uses.