Infrared radiation

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The portion of the electromagnetic spectrum 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...

Synonyms and related termes

infrared, IR; rayonnement infrarouge, infrarouge (Fr.);


  • Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988

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