| 释义 |
infrared
in·fra·red I0135900 (ĭn′frə-rĕd′)adj. Abbr. IR1. 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 millimetreadj (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.Thesaurus| Noun | 1. | infrared - the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; "they could sense radiation in the infrared"infrared frequencyinfrared spectrum - the spectrum of infrared radiationfrequence, 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 wavesinfrared emission, infrared light, infrared radiationactinic 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" |
Translationsinfrared
infrared 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 Infrared (religion, spiritualism, and occult)Infrared is the electromagnetic radiation outside the color spectrum range of visibility, at the lower end and next to the red. Infrared film has been sensitized to this radiation. Infrared film is commonly used at séances where there is total darkness, or where the light is too dim to allow regular photography. In this way it is possible to photograph things which cannot be seen under many séance conditions (e.g. ectoplasm, spirit forms). Sources: Bletzer, June G.: The Encyclopedia Psychic Dictionary. Lithia Springs: New Leaf, 1998infrared[¦in·frə¦red] (electromagnetism) Pertaining to infrared radiation. infraredThat region of the electromagnetic spectrum at wavelengths immediately above the visible spectrum; the heat in this region of the spectrum which is generated by a light source usually is undesirable (since it represents a loss in efficiency), but such heat is used in industrial applications for drying, baking a surface, etc.infrared That portion of the electromagnetic spectrum with a wavelength longer than deep red light (wavelength between 7800 and 1,000,000 angstroms and just slightly longer than the longest wavelength of visible light), thus not visible but sensed as heat. See also near infrared and far infrared.infrared (electronics)(IR) Electromagnetic waves in the frequencyrange just below visible light corresponding to radiated heat.IR waves can be generated by a kind of LED and are oftenused for remote controls for televisions etc. and in somedocking stations.infraredAn invisible band of radiation at the lower end of the visible light spectrum. With wavelengths from 750nm to 1mm, infrared starts at the end of the microwave spectrum and ends at the beginning of visible light. Infrared transmission typically requires an unobstructed line of sight between transmitter and receiver.
Widely used in most audio and video remote controls, infrared transmission is also used for wireless connections between computer devices (see IrDA) and a variety of detectors (see IR detector).
Infrared Can Be Anything Below Red
Infrared means "below red," and red frequencies are at the bottom of visible light. Therefore, infrared may refer to any type of invisible electromagnetic radiation below visible light, including AM, FM and TV. See infrared imaging, infrared wavelengths, IR remote control and IRED.
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| The infrared band comes after the microwave range and ends at visible light. |
infrared
infrared [in″frah-red´] denoting radiation" >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.in·fra·red (IR, ir), (in-fră-red'), That portion of the electromagnetic spectrum with wavelengths between 730 and 1000 nm.in·fra·red (in'fră-red) That portion of the electromagnetic spectrum with wavelengths between 770-1000 nm. infrared the electromagnetic radiation in the region between red light and radio waves. see ELECTROMAGNETIC SPECTRUM.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.FinancialSeeIRAcronymsSeeiridiuminfrared
Related to infrared: Infrared spectroscopySynonyms for infrarednoun the infrared region of the electromagnetic spectrumSynonymsRelated Words- infrared spectrum
- frequence
- frequency
- oftenness
noun electromagnetic radiation with wavelengths longer than visible light but shorter than radio wavesSynonyms- infrared emission
- infrared light
- infrared radiation
Related Words- actinic radiation
- actinic ray
adj having or employing wavelengths longer than light but shorter than radio wavesRelated Words |