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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 ?
"Couple this with new mobile infrared imaging cameras available on the market, and these factors will drive market growth over the projected period."
Companies mentioned in this article charge between $500 and $1,500 for their infrared imaging services.
The Odyssey Infrared Imaging System is uniquely equipped with two infrared channels for direct fluorescence detection on membranes with sensitivity that is equal to or better than chemiluminescence.
Keyserlingk wanted to see if digital infrared imaging (DII) could follow this treatment without the risks from radiation or other invasive monitoring tools.
Keywords: composites; graphite-epoxy; infrared imaging; thermal performance.
Contact Chris Byrd, Infrared Imaging, 905 Calle Amanecer, Ste.
Mold Inspector software, used with Ircon's Stinger infrared imaging camera, is designed specifically to view external mold temperatures.
Currently, LI-COR GmbH sells LI-COR's Odyssey infrared imaging systems in Austria, Germany, Ireland, Switzerland and the UK.
ThermoSoniX is a non-destructive testing technology that combines infrared imaging and ultrasonic energy to detect cracks and defects in a variety of materials.
Art historians have long used infrared imaging of small samples to authenticate pigments of paintings (SN: 3/13/99, p.
But the advent of radio astronomy 30 years ago and infrared imaging technology 10 years ago made the clouds practically transparent.
Huskins, Marijuana Hot Spots: Infrared Imaging and the Fourth Amendment, 63 U.