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 be detected as a sensation of warmth on the skin.

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 in the universe that cannot be seen in visible light using optical telescopes.

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,...

Learn about infrared radiation, its characteristics, discovery, wavelength, frequency, uses and applications. Find out how infrared waves behave as transverse waves, particles and heat sources.

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. How to use infrared in a sentence.

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 the Sun on a summer day, or the soft glow of a light bulb at night.

Infrared radiation (IR), sometimes referred to simply as infrared, is a region of the electromagnetic radiation spectrum where wavelengths range from about 700 nanometers (nm) to 1 millimeter (mm). Infrared waves are longer than visible light waves but shorter than radio waves.

Discover the importance of infrared light for understanding the universe, and how NASA’s James Webb Space Telescope (JWST) will show infrared in unprecedented detail.

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 THz. They are situated between microwaves and visible light in the electromagnetic spectrum.