Chemistry 2210A/B Lecture Notes - Lecture 5: Triatomic Molecule, Diatomic Molecule
19 Oct 2014
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The greenhouse effect: currently the most crucial worldwide environmental problem, haven"t really observed any outstanding evidence of this phenomenon so as to convince everyone (the great global. Predictions difficult, so information is not available ahead of the fact . Earth"s energy source: historical temperature trends, model of the greenhouse effect. Earth"s air temperature is determined by the balance between: incoming energy from the sun (absorbed sunlight), and, energy emitted from the surface & atmosphere to outer. Sun behaves like a blackbody : 100% efficient in emitting and absorbing light. Physics tells us that: all objects emit electromagnetic radiation, the emission wavelength region depends strongly on the object"s temperature t, (kelvin) The emission is centered around the wavelength of peak emission intensity, which is inversely related to the kelvin temperature of the body: lpeak (in mm) = constant / If applied for the sun, t is about 5800 k, so lpeak =
