DrDoomNGloom
Gold Member
yep agree, however, the radiation toward the surface does not heat jack.
So are we clear yet that radiation from the cool atmosphere can hit the warmer ground?
Todd,
You do realize that radiation in this case refers to heat being given off.
A cooler temperature is indicative of a lower level of heat or energy.
So a cooler surface cannot radiate heat to a warmer surface but actually absorbs heat radiated from warmer surfaces.
So once again how does that work??
The radiation goes both ways but the NET result is always warmer to cooler. It's a sorta "gotcha" question methinks. Sorta like vector addition in opposite directions.
Greg
No, they both have signatures that are viewable in the IR spectrum,
No gotcha quetion, there is no question.
Heat flows one way, PERIOD.
What part of that is not sinking in??
NO on is getting got but you, failure to understand but parrot nonsense defines you as ignorant.
This might help you understand.
The 2nd Law of Thermodynamics: Can Energy “Flow Uphill”?
In the case of radiation, the answer to that question is, “yes”. While heat conduction by an object always flows from hotter to colder, in the case of thermal radiation a cooler object does not check what the temperature of its surroundings is before sending out infrared energy. It sends it out anyway, no matter whether its surroundings are cooler or hotter.
Yes, thermal conduction involves energy flow in only one direction. But radiation flow involves energy flow in both directions.
Of course, in the context of the 2nd Law of Thermodynamics, both radiation and conduction processes are the same in the sense at the NET flow of energy is always “downhill”, from warmer temperatures to cooler temperatures.
But, if ANY flow of energy “uphill” is totally repulsive to you, maybe you can just think of the flow of IR energy being in only one direction, but with it’s magnitude being related to the relative temperature difference between the two objects. The result will still be the same: The presence of a cooler object can STILL cause a warmer object to become even hotter.
http://www.drroyspencer.com/2010/07...ts-can-make-warmer-objects-even-warmer-still/
Is this what you would like to see??
Greg
I shoved that way up Cricks ass earlier in the thread, don't be the second dufuss, go back back and find where he got punked out with that non sense/