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Related to infrared: Infrared spectroscopy


denoting electromagnetic radiation of wavelength greater than that of the red end of the spectrum, i.e., of 0.75–1000 μm. Infrared rays are sometimes subdivided into long-wave or far infrared (about 3.0–1000 μm) and short-wave or near infrared (about 0.75–3.0 μm). They are capable of penetrating body tissues to a depth of 1 cm. Sources of infrared rays include heat lamps, hot water bottles, steam radiators, and incandescent light bulbs. Infrared rays are used therapeutically to promote muscle relaxation, to speed up the inflammatory process, and to increase circulation to a part of the body. See also heat.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

in·fra·red (IR, ir),

That portion of the electromagnetic spectrum with wavelengths between 730 and 1000 nm.
Farlex Partner Medical Dictionary © Farlex 2012


That portion of the electromagnetic spectrum with wavelengths between 770-1000 nm.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


the electromagnetic radiation in the region between red light and radio waves. see ELECTROMAGNETIC SPECTRUM.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

infrared (IR)

Radiant energy of wavelengths between the extreme red wavelengths of the visible spectrum and a wavelength of a few millimetres. The wave band comprising radiations between 780 and 1400 nm is referred to as IR-A. Excessive exposure to these radiations can cause visual loss (e.g. eclipse blindness) and cataract. The waveband comprising radiations between 1400 and 3000 nm is referred to as IR-B. Excessive exposure to these radiations can cause cataract and corneal opacity. The wave band comprising radiations between 3000 and 1 ✕ 106 nm (or 1 mm) is referred to as IR-C. Excessive exposure to these radiations can cause cataract (heat-ray cataract). See eclipse blindness; absorptive lens; infrared optometer.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive ?
Infrared can also be more efficient than other electric heating systems.
Infrared heating did not cause any adverse effects on the milling quality of the dried rice.
Cellular response to infrared radiation involves retrograde mitochondrial signaling.
Infrared quartz radiant elements and reflector panels available in a variety of sizes and wattages.
Large Aircraft Infrared Countermeasures system units are already in operation on several aircraft and will soon be installed on more than 20 different fixed and rotary wing platforms across U.S.
If you think some of these applications seem trivial, think again: Infrared can make a difference no matter where it's used.
Unlike visible light, in the infrared world, everything with a temperature above absolute zero emits heat.
The licensing arrangement is expected to drop opening prices of infrared grills from nearly $2,000 to well below $1,000 when Char-Broil rolls its infrared cooking systems out to consumers in 2007.
ISI delivers a comprehensive pre and post-sale experience through arguably the most highly trained and accessible network of sales representatives in North America and offers an entire suite of Infrared Training programs for users.
Now, however, the availability of small, affordable infrared cameras has dramatically reduced the time and expense of detecting moisture and possible mold in a building and tracing its source.
(NYSE:A) and Link Evolution Corp., a wireless communications software development company, has announced an agreement to collaborate on the development of an IrFM-compliant (infrared financial messaging) smart dongle solution for the Japanese infrared mobile-payment market.