Lec4_Stratospheric_Ozone-2

Lec4_Stratospheric_Ozone-2 - Lecture 4 Stratospheric...

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Unformatted text preview: Lecture 4 Stratospheric Ozone-2: Physics and Chemistry of the Ozone Layer CHEM/ENVS 380 Feb 4, 2010 1. Become familiar with major regions of the electromagnetic spectrum. 2. Understand the relationship between energy and wavelength of light. 3. What wavelengths of light do O 2 and O 3 absorb? What are the consequences? 4. What portion of the incoming solar radiation reaches the Earth’s surface, and why? The Electromagnetic Spectrum Baird and Cann (2008), Figure 1-6. • Light has wave- like and particle- like properties • Photon = finite packet of light that is absorbed or emitted by a molecule • Energy E of a photon is inversely related to wavelength λ http://praxis.pha.jhu.edu/science/emspec.html (Adapted from W. J. Kaufmann, "Universe", [Freeman:New York].) Relationship Between E and λ 2200 λ = wavelength (nm, or 10-9 m) • h = Planck’s constant (6.63 x 10-34 J s) • c = speed of light (3.00 x 10 8 m s-1 ) E is commonly expressed as:...
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This note was uploaded on 09/23/2011 for the course CHEM 380 taught by Professor Staff during the Spring '11 term at S.F. State.

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Lec4_Stratospheric_Ozone-2 - Lecture 4 Stratospheric...

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