Far-infrared-radiation definitions

fär'ĭn'frə-rĕd'
Electromagnetic radiation having the longest wavelengths in the infrared region, often between 15 and 1,000 micrometers.
noun
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Electromagnetic radiation having the longest wavelengths in the infrared region, often between 15 and 1,000 micrometers.
noun
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Infrared electromagnetic radiation of very long wavelengths, in the range of 2–50 microns. It is used in medicine to provide a penetrating heat to the body.
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