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- Infrared is called so because it occurs at frequencies above microwaves and just below red visible light1. The term is derived from the Latin words "infra" (below) and "radiare" (to radiate), as infrared radiation has a longer wavelength than visible light and is located "below" the visible spectrum23.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.Within the electromagnetic spectrum, infrared waves occur at frequencies above those of microwaves and just below those of red visible light, hence the name "infrared."www.livescience.com/50260-infrared-radiation.htmlThe term “infrared” is derived from the Latin words “infra” (below) and “radiare” (to radiate). This is because infrared radiation has a longer wavelength than visible light, and is thus located “below” the visible spectrum.infraredforhealth.com/why-is-it-called-infrared/Infrared (IR) is a term used for radiation in a particular, invisible region of the electromagnetic spectrum, namely, between wavelengths slightly longer than that of visible red light and wavelengths slightly shorter than that of microwave radiation. The name (from the Latin word infra, meaning "below") means "below red."www.newworldencyclopedia.org/entry/Infrared
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Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves. The infrared spectral band begins with waves that are just longer than those of red light (the longest waves in the visible spectrum), so IR is invisible … See more
There is no universally accepted definition of the range of infrared radiation. Typically, it is taken to extend from the nominal red edge of the visible spectrum at 700 nm to 1 mm. This range of … See more
In general, objects emit infrared radiation across a spectrum of wavelengths, but sometimes only a limited region of the spectrum is of … See more
Night vision
Infrared is used in night vision equipment when there is insufficient visible light to see. Night vision devices operate through a process involving … See moreInfrared radiation is popularly known as "heat radiation", but light and electromagnetic waves of any frequency will heat surfaces that absorb them. Infrared light from … See more
The discovery of infrared radiation is ascribed to William Herschel, the astronomer, in the early 19th century. Herschel published … See more
Wikipedia text under CC-BY-SA license WEBFeb 27, 2019 · Infrared radiation (IR), or infrared light, is a type of radiant energy that's invisible to human eyes but that we can feel as heat. All objects in the universe emit...
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WEBAug 10, 2016 · Infrared waves have longer wavelengths than visible light and can pass through dense regions of gas and dust in space with less scattering and absorption. Thus, infrared energy can also reveal objects …
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WEBMar 14, 2024 · Infrared radiation, or infrared light, is a type of radiant energy invisible to the human eye. Keep reading as we explore what infrared radiation is and how it works...
WEBInfrared radiation (IR) is electromagnetic radiation with wavelengths longer than visible light. It is called infrared because it is below the red end of the visible spectrum. Learn more about its characteristics, properties, …
Infrared - Math is Fun
WEBInfrared (also called IR) is in the middle of the electromagnetic spectrum: The wavelength of infrared goes from 1 millimeter to far red light at 750 nanometers (750 billionths of a meter). Invisible. Infrared is invisible …
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(a) Why are infra-red waves often called heat waves? Explain.
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