Chm 115 F13 Lect 20

Absorbed by o3 in stratosphere uv a 320 400 break

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Unformatted text preview: sorbed by O3 in stratosphere. UV-A 320-400 break bonds/ electron transitions transitions A lot reaches surface of earth through atmosphere; can result in eye damage; tanning Visible 400-700 nm electron transitions Results in color IR (near) 700-5000 nm bond vibrations spectroscopy to look at structures of molecules Microwave 1 mm – 1 m bond rotations Microwave ovens Molecular responses to radiation 4 2 Molecular response to radiation • CFC example example – Go to topic 3, lesson 3 for demo • Molecular Interactions with Electromagnetic Radiation learning tool. 5 3-D Molecular Shape and Vision • Rhodopsin is responsible for detecting visible light detecting visible light in rods. • Rhodopsin consists of 11-cis-retinal covalently bonded to a large protein. large protein • Note how 11-cisretinal fits into the protein to allow it to bond. 6 3 3-D Molecular Shape and Vision • When light strikes the molecule, the shape molecule, the shape will change via a rotation around the 11-12 bond. 7 3...
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This note was uploaded on 01/24/2014 for the course CHEM 115 taught by Professor L during the Fall '02 term at Purdue University.

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