By Swedish professor of applied mathematics Claes Johnson. Like water, thermal energy always flows downhill, i.e., it spontaneously degrades if given an avenue for transfer and exhausts itself in the process. Recollecting this energy and making it concentrated again demands an outside agency with energy of its own. So if back-radiation does transfer heat to the very body that is radiating this energy, this may be proof of God's existence. For it would truly be a miracle. AS.
This post connects to previous posts arguing that backradiation is unphysical.
Recall that backradiation from atmospheric greenhouse CO2 is the scientific corner-stone of IPCC climate alarmism, supported by in particular the Royal Society and the Royal Swedish Academy of Sciences. This corner-stone is unphysical and purely fictional.
In Computational Black Body Radiation I give a mathematical explanation of Planck's black body radiation law based on finite precision computation, as an alternative to the statistics of quanta used by Planck himself.
The basic problem is to explain why and how nature avoids an ultra-violet catastrophy by cutting off radiation of frequencies higher than a certain cut-off frequency proportional to the temperature according to Wien's displacement Law (see fig above): Higher temperature allows higher frequencies to be radiated, as seen in the color of a fire changing with temperature.
Planck explains the cut-off using statistical mechanics by viewing radiating waves to be assembled from a certain smallest unit of energy (quanta) and assuming that high energy/frequency is rare because it requires assembly of many quanta.
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