Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves.

Dec 18, 2025 · infrared radiation, that portion of the electromagnetic spectrum that extends from the long wavelength, or red, end of the visible-light range to the microwave range. Invisible to the eye, it can …

Aug 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 …

Aug 16, 2013 · The wavelength of infrared light is longer than red light, in some cases many hundreds of times longer. These longer wavelengths carry less energy than red light and do not activate the …

Mar 19, 2025 · Infrared light, also called infrared radiation or IR waves, is a type of electromagnetic radiation with wavelengths longer than visible light but shorter than microwaves. It is invisible to the …

Infrared radiation (IR) is a type of radiant energy, with longer wavelengths than the visible light humans can see, but shorter wavelengths than radio waves. Its range extends from fairly small wavelengths …

Nov 26, 2025 · Infrared (IR) radiation is a form of energy that is invisible to the human eye. It is an electromagnetic wave intimately linked with the sensation of heat, making it a primary mechanism for …

Infrared radiation is a form of electromagnetic radiation with wavelengths longer than those at the red-end of the visible portion of the electromagnetic spectrum but shorter than microwave radiation.

Jan 14, 2024 · Infrared (IR) waves are a type of electromagnetic (EM) radiation with wavelengths ranging from 700 nanometers (nm) to 1 millimeter (mm) and frequencies between 300 GHz and 430 …

Its radiation peaks in the visible part of the spectrum at wavelengths of about half a micron, as shown by the yellow-green line in the graph above. Infrared radiation was discovered by William Herschel in 1800.