Chemistry 2210A/B Lecture Notes - Lecture 5: Black-Body Radiation, Nitrification, Molecular Geometry

• School: Western University
• Department: Chemistry
• Course: Chemistry 2210A/B
• Professor: Keith Griffiths

Document Summary

Chapter 5: the greenhouse effect: ge = normal, make planet warm and habitable, controls earth"s t, gw = enhanced ge, atmosphere is warming = fact, cause of warming = not definitive. No evidence of this phenomenon, so not everyone is convinced yet: predictions are difficult, so information is not available ahead of the fact . Mechanism of greenhouse effect: earth"s energy source, historical temperature trends, energy emissions and the greenhouse effect, model of the greenhouse effect, earth"s energy balance, earth"s e source, earth"s air t determined by balance b/w. Incoming e from sun (absorbed sunlight: energy emitted from the surface and atm to space, sun behaves like blackbody = 100% efficient in emitting and absorbing light. 500 nm = yellow/green light, that"s why sun is yellow: below 700 k = spectrum shift so far to high wavelength, no longer get visible light, we get ir. That sis quite a lot of sunlight that is in visible region.