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

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 …

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 …

Oct 8, 2025 · Infrared light lies in the invisible light spectrum between red light and microwave radiation. There are three main types of infrared light: near-infrared, mid-infrared, and far-infrared.

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 …

Mar 14, 2024 · Infrared is a type of energy on the electromagnetic spectrum. Invisible to the human eye, infrared energy is given off by all heat sources. Discovered in 1800 by William Herschel, infrared can …

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.

May 21, 2024 · Infrared radiation is a type of electromagnetic radiation with a wavelength slightly longer than red rays. Though humans can't see...

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 …

Discover infrared radiation—definition, wavelength range, uses, and safety. Learn key facts for exams and daily life.