[Bob434]

[[But suffice to say trillions of molecules could receive that heat. It spreads relatively evenly which produces entropy]]

Ok that’s my question- as it spreads outwards from the source (the CO2 molecule which converts it to energy/heat)- it is losing heat the further it gets from point of origin-

I’ll have to go through rst of you post in a few days- too much going on right now

[palmer]

Yes, diffusion (conduction) of heat should look something like this. Since air is a poor conductor, the parabola may be have steeper slopes than the one below: