thermal infrared region (4 - 100 microns)...».
The sun, which is quite hot (about 5800K), emits most of its energy at between 0.2 microns and 4 microns (solar or short wave radiation, or plain sunlight), while the Earth's surface emits the most energy at wavelengths between 5 and 50 microns (the so - called
thermal Infrared region of the spectrum).
Not exact matches
Tornabene L. L., & 6 others (2006), Identification of large (2 — 10 km) rayed craters on Mars in THEMIS
thermal infrared images: Implications for possible Martian meteorite source
regions, J. Geophys.
«Dyson spheres would presumably need to radiate efficiently in the
thermal infrared and so would be relatively featureless, but would exhibit a smooth peak in this
region.»
T0 can be taken as more or less constant near 255 K while P0 is latitude dependent near 400 mbar at the equator, and near the ground in the polar
regions (as there there is very little water vapour and the optical thickness of the air on most of the
thermal infrared spectrum is low).