[freebeard]

You obviously have a web browser. Quoth DDG:

https://www.chegg.com › homework-help › questions-and-answers › wavelengths-8-12-micrometers-called-atmospheric-window-earth-s-atmosphere-mostly-transpare-q48386793
Solved The wavelengths from 8 to 12 micrometers are called | Chegg.com
The wavelengths from 8 to 12 micrometers are called the atmospheric window because the Earth's atmosphere is mostly transparent to the radiation of the Earth's surface for these wavelengths. The exception to this rule is that between wavelengths of 9 and 10 micrometers the atmosphere absorbs some of the outgoing radiation from the Earth's ...

https://www.e-education.psu.edu › eme810 › node › 455
3.2. Basic Rules of Light Quantification | EME 810: Solar Resource ...
The gap between 8-13 micrometers (8,000-13,000 nm) is called the atmospheric window, or the sky window, where the molecules CO2 and H2O do not absorb or reflect, and through which a portion of the longwave band can escape. Soon, we will design terrestrial emitters to selectively send energy out the window.