far-infrared radiation

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far-in·fra·red radiation

n. Abbr. FIR
Electromagnetic radiation having the longest wavelengths in the infrared region, often between 15 and 1,000 micrometers. Also called far-red radiation.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Because of its special chemical structure, it possesses many unique physical and chemical properties [6], such as far-infrared radiation [7, 8] and negative ion release [9, 10].
Far-infrared radiation (FIR), which comprises electromagnetic waves of wavelength 3-1000 [micro]m [1], possesses physiological actions because not only of its high penetrating power in human tissue but also of its ability to elicit both heat-related [2] and nonheat-related [3] biological effects.
Improvement of quality and antioxidant properties of dried mulberry leaves with combined far-infrared radiation and air convection in Thai tea process.
Initial inspection of the observations has revealed that many emit bright far-infrared radiation.
(4.) Discussion Meeting Issue 'The terahertz gap: the generation of far-infrared radiation and its applications' organized by A.
This method is based on the transmission of polarized far-infrared radiation. Fairly thick samples (polyethylene up to one centimeter thick) can be tested easily with this nondestructive approach.