infrapunasäteilyltä

Infrapunasäteilyltä, often referred to as infrared radiation, is a segment of the electromagnetic spectrum that is invisible to the human eye. It lies between visible light and microwaves. The wavelength of infrared radiation ranges from approximately 700 nanometers to 1 millimeter. Sources of infrared radiation include the sun, heat-producing objects like fire, and living beings through their body heat. When infrared radiation strikes an object, it can be absorbed, reflected, or transmitted. Absorption of infrared radiation leads to an increase in the object's temperature, which is why it is commonly associated with heat.

Infrared radiation has numerous applications. In everyday life, it is used in remote controls, thermal imaging cameras that detect heat signatures, and heating devices. Industrially, it is utilized in drying processes, curing paints, and in spectroscopy for analyzing the chemical composition of substances. Astronomers use infrared telescopes to observe celestial objects that are otherwise obscured by dust or that emit primarily in the infrared spectrum. While generally harmless, prolonged exposure to high-intensity infrared radiation can cause burns and damage to the eyes.