Infrared Radiation
Infrared Radiation In`fra*red" Ra`di*a"tion, n. [Infra- + red.] (Physics) electromagnetic radiation having a wavelength of between 700 nanometers and 1 millimeter.

Note: Infrared radiation is that electromagnetic radiation lying between the visible spectrum and the longest microwaves. It may be absorbed by matter in a manner specific to the absorbing substance, causing increased vibration of molecules. The infrared absorption spectrum of a chemical compound is often very specific, and the infrared absorption spectrum is therefore used to help identify chemical substances. Infrared radiation is used in certain communication devices, such as television remote controls and communication devices between computers or between computers and peripherals. [PJC]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

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  • infrared radiation — the band of electromagnetic radiation that is longer in wavelength than the red of the visible spectrum. Infrared radiation is responsible for the transmission of radiant heat. It may be used in physiotherapy to warm tissues, reduce pain, and… …   The new mediacal dictionary

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  • infrared radiation — Radiation emitted or reflected in the infrared portion of the electromagnetic spectrum …   Military dictionary

  • Infrared Radiation —   Electromagnetic radiation whose wavelengths lie in the range from 0.75 micrometer to 1000 micrometers; invisible long wavelength radiation (heat) capable of producing a thermal or photovoltaic effect, though less effective than visible light …   Energy terms

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