On 10/08/15 00:21, Alastair McDonald wrote:
"Metman2012" wrote in message
...
On 09/08/2015 18:24, Alastair McDonald wrote:
"Metman2012" wrote in message


.............snip bizarre stuff.
It not just about semantics. It is also about my reputation. It has been
destroyed by Dawlish ridiculing me for maintaining that bodies absorb
cold radiation.
You have NO reputation when it comes to understanding physics.
I have just realised that his problem is he is
misinterppreting the Second Law of Thermodynamics. He think it means
that heat only travels from hot to cold, but of course as you have pointed
out it, it states entropy increases.

Heat does only flow from a hot body to a cold body!!! That is the
DEFINITION. Heat is the NET flow of energy.
Radiative energy leaves the cold body and is absorbed by the hot body.
Radiative energy leaves the hot body and is absorbed by the cold body.
The net flow of energy is from the hot to the cold body. That is the
heat flow. As heat flows out of the hot body it cools down. Forget this
'cold' radiation nonsense.

Hot becomes colder and cold becomes
hotter. Heat travels in both directions, just as does radiation. Thanks!

HTH,

Cheers, Alastair.