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infrared radiation

Cultural  
  1. Invisible radiation in the part of the electromagnetic spectrum characterized by wavelengths just longer than those of ordinary visible red light and shorter than those of microwaves or radio waves. (Compare ultraviolet radiation.)


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The heat we feel from a glowing coal or an incandescent light bulb is from infrared rays.

Example Sentences

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"Their weight is known precisely. They therefore allow us to correctly interpret the scale's balance. Similarly, the glass beads allow us to draw the correct conclusions from the properties of the infrared radiation."

From Science Daily Sep. 12, 2026

To identify the disk gases, the team used MIRI's spectrograph to decompose the infrared radiation received from the disk into signatures of small wavelength ranges -- similar to sunlight being split into a rainbow.

From Science Daily Jun. 6, 2024

"This process involves using specially engineered aerogels to emit infrared radiation through the atmospheric 'sky window', effectively cooling surface temperatures below ambient levels," said Assoc Prof Duong.

From Science Daily Jun. 4, 2024

These glasses reduce visible sunlight to safe and comfortable levels and block all but a tiny fraction of solar UV and infrared radiation, according to the American Astronomical Society.

From Los Angeles Times Apr. 4, 2024

Some nearby examples, tens or hundreds of millions of light-years away, are powerful sources of X-rays, infrared radiation and radio waves, have extremely luminous cores and fluctuate in brightness on time scales of weeks.

From "Cosmos" by Carl Sagan

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