Well wait no more JC, you're about to get straighten out about "IR heat" and radiative physics... DO ASK FOR HELP if you need it, but quite simply --- The amount of IR energy passed between any two bodies will exchange in BOTH directions, depending on the geometry of the surfaces and the temperatures of the objects.. A cold and hot body will BOTH "radiate" each other.. The hot one always wins the TOTAL transfer.. Here's you proof..
Post #495. Thanks for the try, but that’s not observation and I asked for observed. Just in case you missed that part. And, i never said that the cold object doesn’t radiate, just not with a warmer object next to it. In your own post it states ‘depending’.
That science FACT in that textbook simply says that EVERYTHING is capable of radiating IR.. Even clouds and snow and ice.. And it actually SOLVES your complaint if you understood it.. A cold object facing a warm object is in a photon gunfight.. And the WARM object always wins.. Because it's the bigger IR photon flux... So NO LAW OF BASIC THERMODYNAMICS IS VIOLATED...
HOWEVER -- if you're talking about a massively distributed atmospheric shield of green house gases, that WEAK "back radiation" which is only maybe a fiftieth the earth's heat shedding, DOES happen to get reduce by a few WATTS out of HUNDREDS of watts.. Those gases act like a electromagnetic "blanket" to retard the loss to space and slow the heat loss.
The earth still LOSES HEAT every hour of the night and day to the cooler sky and space.. It just loses it at a rate reduced by the THERMAL DIFFERENCE between the atmosphere and the absolute cold of space...
NO SECOND LAW VIOLATION... Don't be a dummy.... Especially, if you don't understand the standard textbooks on the subject....