Why does the Earth radiate 15 microns of IR energy overnight even though it is much warmer than the -73C temperature that Wiens Law states is required for a black body to generate this wavelength? - TL Winslow Pansophist master of STEM and world history

https://www.quora.com/Why-does-the-Earth-radiate-15-microns-of-IR-energy-overnight-even-though-it-is-much-warmer-than-the-73C-temperature-that-Wiens-Law-states-is-required-for-a-black-body-to-generate-this-wavelength/answer/TL-Winslow