infrared, infrared frequency(noun)
the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range
"they could sense radiation in the infrared"
infrared, infrared light, infrared radiation, infrared emission(adj)
electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
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"
electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation, having a wavelength between 700 nm and 1 mm
Etymology: Latin infra, below, + red
In the infrared spectrum.
Etymology: Latin infra, below, + red
Having the wavelength in the infrared.
Etymology: Latin infra, below, + red
Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore generally invisible to the human eye, although IR at wavelengths up to 1050 nanometers (nm)s from specially pulsed lasers can be seen by humans under certain conditions. IR wavelengths extend from the nominal red edge of the visible spectrum at 700 nanometers (frequency 430 THz), to 1 millimeter (300 GHz). Most of the thermal radiation emitted by objects near room temperature is infrared. As with all EMR, IR carries radiant energy and behaves both like a wave and like its quantum particle, the photon. Infrared radiation was discovered in 1800 by astronomer Sir William Herschel, who discovered a type of invisible radiation in the spectrum lower in energy than red light, by means of its effect on a thermometer. Slightly more than half of the total energy from the Sun was eventually found to arrive on Earth in the form of infrared. The balance between absorbed and emitted infrared radiation has a critical effect on Earth's climate. Infrared radiation is emitted or absorbed by molecules when they change their rotational-vibrational movements. It excites vibrational modes in a molecule through a change in the dipole moment, making it a useful frequency range for study of these energy states for molecules of the proper symmetry. Infrared spectroscopy examines absorption and transmission of photons in the infrared range.Infrared radiation is used in industrial, scientific, military, commercial, and medical applications. Night-vision devices using active near-infrared illumination allow people or animals to be observed without the observer being detected. Infrared astronomy uses sensor-equipped telescopes to penetrate dusty regions of space such as molecular clouds, detect objects such as planets, and to view highly red-shifted objects from the early days of the universe. Infrared thermal-imaging cameras are used to detect heat loss in insulated systems, to observe changing blood flow in the skin, and to detect overheating of electrical apparatus.Extensive uses for military and civilian applications include target acquisition, surveillance, night vision, homing, and tracking. Humans at normal body temperature radiate chiefly at wavelengths around 10 μm (micrometers). Non-military uses include thermal efficiency analysis, environmental monitoring, industrial facility inspections, detection of grow-ops, remote temperature sensing, short-range wireless communication, spectroscopy, and weather forecasting.
Infrared light is electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometres to 1 mm. This range of wavelengths corresponds to a frequency range of approximately 430 THz down to 300 GHz, and includes most of the thermal radiation emitted by objects near room temperature. Infrared light is emitted or absorbed by molecules when they change their rotational-vibrational movements. The existence of infrared radiation was first discovered in 1800 by astronomer William Herschel. Slightly more than half of the energy from the Sun arrives on Earth in the form of infrared radiation. The balance between absorbed and emitted infrared radiation has a critical effect on the Earth's climate. Infrared energy elicits vibrational modes in a molecule through a change in the dipole moment, making it a useful frequency range for study of these energy states for molecules of the proper symmetry. Infrared spectroscopy examines absorption and transmission of photons in the infrared energy range. Infrared light is used in industrial, scientific, and medical applications. Night-vision devices using active near-infrared illumination allow people or animals to be observed without the observer being detected. Infrared astronomy uses sensor-equipped telescopes to penetrate dusty regions of space, such as molecular clouds; detect objects such as planets, and to view highly red-shifted objects from the early days of the universe. Infrared thermal-imaging cameras are used to detect heat loss in insulated systems, to observe changing blood flow in the skin, and to detect overheating of electrical apparatus.
Song lyrics by infrared -- Explore a large variety of song lyrics performed by infrared on the Lyrics.com website.
The numerical value of Infrared in Chaldean Numerology is: 1
The numerical value of Infrared in Pythagorean Numerology is: 3
Examples of Infrared in a Sentence
The 2016 event was very exciting at first. It was nearby and visible with every major telescope, including Very Large Telescope. But it didn't match our predictions -- we expected to see the infrared emission become brighter and brighter over several weeks.
Soldiers wear uniforms with the familiar green and brown camouflage patterns to blend into foliage during the day, but under low light and at night, they're still vulnerable to infrared detection, you can draw inspiration from nature that has been developed over millions of years, giving us ideas we might not have been able to come up with otherwise.
The infrared shows us that the surface of the south pole is young, which is not a surprise because we knew about the jets that blast icy material there, now, thanks to these infrared eyes, you can go back in time and say that one large region in the northern hemisphere appears also young and was probably active not that long ago, in geologic timelines.
Light absorbing dyes are found all around us. They're in paints, they're in pigments for clothing, and they're even in electronic devices, what we've done is we've engineered those dyes to selectively absorb infrared light and also convert that light into electricity.
We've developed stickers for use as a thin, flexible layer of camo with the potential to take on a pattern that will better match the soldiers' infrared reflectance to their background and hide them from active infrared visualization.
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Translations for Infrared
From our Multilingual Translation Dictionary
- تحت الحمراء, الأشعة تحت الحمراءArabic
- infraroigCatalan, Valencian
- infračervený, infračervenéCzech
- infrarød, infrarød strålingDanish
- υπέρυθρος, υπέρυθρεςGreek
- فروسرخ, فرو سرخPersian
- fodhearg, infridheargIrish
- fo-dheargScottish Gaelic
- infravörös, infravHungarian
- אינפרא אדוםHebrew
- 赤外, 赤外線Japanese
- 적외선, 적외선의Korean
- инфрацрвено зрачење, инфрацрвенMacedonian
- infraraud stråling, infraraudNorwegian Nynorsk
- infrarød, infrarød strålingNorwegian
- podczerwień, podczerwonyPolish
- infracrven, инфрацрвенSerbo-Croatian
- infraröd, infraröd strålning, infrarSwedish
- Kızılaltı, Kızılötesi, kızılTurkish
- hồng ngoạiVietnamese
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