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 …

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 …

The meaning of INFRARED is situated outside the visible spectrum at its red end —used of radiation having a wavelength between about 700 nanometers and 1 millimeter.

Feb 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 some level of IR radiation,...

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 · What is Infrared? Infrared is a form of light... light that we can not see with our eyes, but that we can sometimes feel on our skin as heat. When we think of light, we may imagine the glare of …

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 …

Jun 9, 2022 · What Is Infrared? Infrared radiation — often referred to simply as infrared or IR — is a type of invisible energy that lies just beyond the red end of the visible light spectrum. Although we cannot …

Jul 13, 2021 · WHAT IS INFRARED? Infrared radiation, also referred to as infrared light or infrared waves, is a form of energy with frequency and wavelengths just below the visible light portion of the …