Wednesday, 29 December 2010
The warmth that cools.
40 or 50 years ago the Gas Board (for that's what it was then) ran a series of educational advertisements explaining how 'The flame that cools" worked, to publicise gas-fired refrigerators. Their product was demonstrable, and worked.
A couple of days ago, an article in the New York Times attempted to explain why Global Warming creates more-frequent, colder-than-average winters.
"The sun’s energy reflects off the bright white snow and escapes back out to space. As a result, the temperature cools."
Having only 'O'-level physics, I struggle to understand how energy 'reflected' back to outer space 'cools' the earth. The earth getting 'less-warm' (because less radiant heat is absorbed) I can understand; but if that process worked, simply sticking mirrors around boxes is a trick every freezer-manufacturer must have missed.
[I can also understand how 'black-bodies' (that's a technical, not racist, description) radiate heat out to space. However, 'black-bodies' and white snow are metaphorically at opposite ends of the spectrum.]
The article's author also seems to have forgotten that the Eco-Loons are brainwashing us into reducing CO2 emissions. For those with short memories, that's the 'Greenhouse Gas' that was supposed to trap the heat, and so counteract the reduced radiant absorption caused by reflectivity of white snow. White snow being the stuff that covers the poles (and currently the Poles too) and is supposed to be shrinking. But if their area is shrinking, we're losing less heat, so it's a self-correcting phenomenon.
A guest post submitted by Joe Public at the behest of his Hungarian cousin Imas Keptic.