To: neolib who wrote (19984 ) 2/2/2008 11:18:02 AM From: Thomas A Watson Respond to of 36918 For neolib AKA ear2earfeces, until such time as whatever dementia afflicts you preventing you from comprehending the simple clear expressions of science at sites like junkscience.com is cured, only delusions make you believe you can help any other understand anything. Understanding Heat Trapping and how it is a misnomer. From a superb pdf at junkscience.com Understanding Heat Trapping It is well known that certain gases such as carbon dioxide (CO2), water vapor, methane, and others in the atmosphere absorb radiant infrared heat that is leaving the Earth's surface, warm the air, and re-radiate heat in all directions, including back to Earth. Infrared energy is an electromagnetic wave like visible light and radio waves, but of different frequencies or wavelengths. (This heat transfer process is incorrectly called trapping, but at times we will use that term here because it is referred to so often in the media). However, it is not generally known that this heat absorption occurs only at certain wavelengths. These are the ones that have frequencies that resonate at certain values that relate to those of a particular molecule's structure. It is similar to a radio receiver picking up only signals that correspond to the frequency to which its tuner is adjusted. Some of these different gases have several resonant wavelengths and some of these overlap among them. This is the case for water vapor and CO2. Since there are many more water vapor molecules in the air than CO2, the ones for CO2 that do not overlap, or only partially overlap water vapor, are of interest. Note: The term greenhouse gas is actually a misnomer. In real greenhouses the ceiling blocks the rising warm air from escaping. With little temperature differences, radiant heat transfer is very low. So phrases such as heat trapping greenhouse gases (two flawed concepts in only four words) are causing great concern and misleading the uninformed public. Hopefully, this paper will help to correct this situation.