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It has wavelengths longer than those of visible light, ranging from about 700 nanometers to over 1 millimeter. The article on Infrared on Wikipedia provides an overview of this phenomenon, discussing its properties, applications, and uses in various fields. It explains how infrared radiation is generated, detected, and measured, as well as the interactions between infrared radiation and matter. The article also describes the different regions of the infrared spectrum, from near-infrared to mid-infrared and far-infrared, and their respective uses in fields such as astronomy, communications, remote sensing, and thermal imaging. Furthermore, it explores the practical applications of infrared technology in everyday life, such as infrared lamps, night vision devices, and thermal cameras. It also covers the use of infrared in medicine, including infrared thermography and photobiomodulation therapy. The article delves into the historical developments and discoveries related to infrared, from the discovery of infrared radiation by William Herschel in 1800 to the advancements in infrared technology in the 20th and 21st centuries. Overall, the Wikipedia article on Infrared provides a comprehensive overview of this important aspect of electromagnetic radiation, highlighting its properties, applications, and impact on various fields of science and technology.