On Friday, August 7, 2015 at 2:23:54 PM UTC-4, Alastair wrote:
On Friday, 7 August 2015 18:25:05 UTC+1, Stephen Davenport wrote:
On Friday, August 7, 2015 at 12:56:34 PM UTC-4, Alastair wrote:
On Thursday, 6 August 2015 16:13:18 UTC+1, Dawlish wrote:
On Thursday, August 6, 2015 at 3:52:09 PM UTC+1, Alastair wrote:
Dawlish,

On Page 576 of University Physics with Modern Physics, Technology Update, Thirteenth Edition (2010), which continues to set the benchmark for clarity and rigor combined with effective teaching and research-based innovation, they write:

"Radiation. Heat transfer by radiation is important in some surprising places. A premature baby in an incubator can be cooled dangerously by radiation if the walls of the incubator happened to be cold, even when the air in the incubator is warm. Some incubators regulate the temperature measuring the baby's skin ..."

Hot objects radiate heat which warms adjacent objects. Cold objects radiate cold which cools adjects objects. The latter is difficult to demonstrate because it is more difficult to maintain a constant cold temperature than a high temperture. The latter is easy using electrical heating. However, holding a thermnometer over an object taken from a freezer will cause the temperature shown to drop.

I hope you will now realise that you are wrong, will apologise and admit your mistake. Cold radiation does exist.

Cheers, Alastair.

This explains it to you. You can access any number of other academic explanations. You will not find a single one which tells you that heat moves from cool to hot, unless and external energy supply is applied. Now stop this silly belief you have and don't make this proposal again.

http://theory.uwinnipeg.ca/mod_tech/node79.html

I find your posts so insulting I have difficulty reading them. So it is only now that I am replying.

What is described there is the flow of heat energy - i.e. the kinetic energy of molecules. If you have a bar of metal heat can only flow in one direction - from the hot end to the cold end. But the hot end will get cooler and the cool end hotter.

The dame thing happens with radiation. The hot body emits hot radiation which warms the cold body and the cold body emits radiation which cools the hot body.

Do hot bodies emit radiation? YES! Let's call that hot radiation.
Do cold bodies emit radiation? YES! Let's call that cold radiation.

If a cold body absorbs hot radiation, will it warm or cool? Of course it will warm.
If a hot body absorbs cold radiation, will it warm or cool? Of course it will cool. Do you agree?

No!

Because you are a stupid arrogant little ****!

Cheers, Alastair.

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I understand your frustration but not a single other person agrees either. So are we all "arrogant little ****s?"

Your smart, so I don't understand why this is so difficult.

Stephen.

See my reply to JohnD.

Why is it so difficult for you to answer my four questions?

Cheers, Alastair.

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Because with the last of those you are begging the question.

And on the subject of fallacies, in no way did JohnD resort to argumentum ad hominen; whereas I believe that you did a short while earlier.

I am jumping off this carousel of an argument now. Good luck.

Stephen.