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

Nov 6, 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 …

Dec 5, 2016 · 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.

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 …

Aug 10, 2016 · Infrared waves, or infrared light, are part of the electromagnetic spectrum. People encounter Infrared waves every day; the human eye cannot see it, but humans can detect it as heat.

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 …

Dec 3, 2025 · Infrared radiation is a type of electromagnetic wave that has a frequency lower than visible light but higher than microwaves. It is also known as heat radiation because warm objects naturally …

Infrared radiation (IR) is a type of electromagnetic radiation with wavelengths longer than visible light but shorter than microwave radiation. It is emitted by all objects based on their temperature due to the …

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 …

Infrared radiation was discovered by William Herschel in 1800. He was studying the heating effect of different colours of light by using a prism to produce a spectrum of colours and thermometers to …