The portion of the electromagnetic radiation with wavelengths ranging from 0.7 - 500 micrometers, or wavenumbers of 14,000 - 20 cm-1. Infrared radiation (often called IR) was discovered by the German-British physicist William Herschel in 1800. Infrared radiation is involved in examination or analysis techniques like infrared photography, infrared reflectometry, infrared thermography, infrared spectroscopy...
infrared, IR; rayonnement infrarouge, infrarouge (Fr.); colour
Sources Checked for Data in Record
- Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988