infrared

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in·fra·red

 (ĭn′frə-rĕd′)
adj. Abbr. IR
1. Of or relating to electromagnetic radiation between microwaves and red visible light in the electromagnetic spectrum, having frequencies between 300 gigahertz and 400 terahertz and wavelengths between 1 millimeter and 750 nanometers.
2. Generating, using, or sensitive to infrared radiation.
n.
Infrared light or the infrared part of the spectrum.

infrared

(ˌɪnfrəˈrɛd)
n
(General Physics) the part of the electromagnetic spectrum with a longer wavelength than light but a shorter wavelength than radio waves; radiation with wavelength between 0.8 micrometres and 1 millimetre
adj
(General Physics) of, relating to, using, or consisting of radiation lying within the infrared: infrared radiation.

in`fra•red′

or in`fra-red′,



n.
1. the part of the invisible spectrum that is contiguous to the red end of the visible spectrum and that comprises electromagnetic radiation of wavelengths from 800 nm to 1 mm.
adj.
2. of, pertaining to, or using the infrared or its component rays: infrared radiation. Compare ultraviolet.
[1825–35]

in·fra·red

(ĭn′frə-rĕd′)
Relating to the invisible part of the electromagnetic spectrum with wavelengths longer than those of visible red light but shorter than those of microwaves. See more at electromagnetic spectrum.
Did You Know? In 1800 the astronomer Sir William Herschel discovered infrared light when he was exploring the relationship between heat and light. Herschel used a prism to split a beam of sunlight into a rainbow of colors (red, orange, yellow, green, blue, indigo, and violet) and measured how hot a thermometer got when it was placed in each of the various bands. Then he tried placing the thermometer just outside the red band, where there was no visible color at all. The thermometer heated up, just as if light were shining on it. Further experiments showed that this invisible form of light behaved just like visible light in many ways; for example, it could be reflected by a mirror. We now call this form of light infrared light. Another kind of invisible light, ultraviolet light, is found just beyond the violet end of the spectrum.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.infrared - the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; "they could sense radiation in the infrared"
infrared spectrum - the spectrum of infrared radiation
frequence, frequency, oftenness - the number of occurrences within a given time period; "the frequency of modulation was 40 cycles per second"; "the frequency of his seizures increased as he grew older"
2.infrared - electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
actinic radiation, actinic ray - electromagnetic radiation that can produce photochemical reactions
Adj.1.infrared - having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end; "infrared radiation"; "infrared photography"
invisible, unseeable - impossible or nearly impossible to see; imperceptible by the eye; "the invisible man"; "invisible rays"; "an invisible hinge"; "invisible mending"
Translations
infraroig
infračervený
infrarødinfrarød stråling
infrapuna
적외선
infrarødinfrarød stråling
infravermelho
infrarödinfraröd strålning

infrared

[ˈɪnfrəˈred] ADJ [rays, light] → infrarrojo

infrared

infra-red [ˌɪnfrəˈrɛd] adj
[light, radiation] → infrarouge
[equipment, sensor] → infrarouge; [camera] → infrarouge

infrared

adjinfrarot

infrared

[ˌɪnfrəˈrɛd]
1. adjinfrarosso/a
2. n (raggio) → infrarosso

infrared

adj infrarrojo
References in periodicals archive ?
An international team of astronomers first discovered the galaxies in far-infrared light using survey data from the European Space Agency's (ESA) Planck space observatory, and some clever sleuthing.
Another space observatory, Herschel, then observed these objects across the far-infrared to submillimeter wavelength range (just a bit shorter than microwaves), but with much higher sensitivity and angular resolution.
Herschel has resolved the far-infrared emission within just 1 light-year of the black hole, making it possible for the first time at these wavelengths to separate emission due to the central cavity from that of the surrounding dense molecular disc," said Javier Goicoechea of the Centro de Astrobiologia, Spain, and lead author of the paper reporting the results.
Combined with its panoramic imaging cameras, astronomers arenowable to find examples of these lenses by scanning large areas of the sky in far-infrared and sub-millimetre light.
The company recently introduced its second generation night vision system which includes one of the world's first advanced pedestrian detection capability using a single far-infrared sensor.
The new Night Vision system is based on Autoliv's far-infrared technology.
Far-infrared sauna therapy sessions are available for men and women.
This study was conducted to investigate the far-infrared ray emission and electrical properties of woodceramics manufactured from pine sawdust at different carbonizing temperatures and resin impregnation ratios.
To scientific end users, and to people from the interested public, appropriate servers will provide raw and processed Herschel data-images of objects in different infrared/ far-infrared "colors" and spectra at different wavelengths and resolution from objects that were observed.
The team spotted HW2's disk with the Sub-millimeter Array telescope atop Mauna Kea in Hawaii, a network of eight far-infrared detectors exquisitely sensitive to dust and highly ionized molecular gas in dense, circumstellar disks.
as an easy-to-use THz far-infrared (far-IR) pulsed transmission spectrometer.
The Intelligent Night Vision System uses images obtained from two far-infrared cameras positioned in the lower section of the front bumper to detect the position and movement of infrared heat-emitting objects and determine whether they are in or approaching the vehicle's path.