Review02 - Review Session of Jason S. Kong Wednesday,...

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Unformatted text preview: Review Session of Jason S. Kong Wednesday, November 7, 2007 There was once a farmer who tilled the soil every day in great earnest, trying to make a living off of his crops. He and his wife were honest people, waking early in the morning before the first rays of light skimmed across the pond and into the window of his humble home built of dried cedar and stuck together with an ashen tar. And in those early morning hours, the farmer would rouse his wife to greet the morning light and he would stand, his face a mere inches from the transparent glass, refusing to breathe even the slightest amount lest the first morning rays be vanquished forever by the thick fog of moisture upon silicate. 1. Considering the transparency of all visible light to glass, would you expect glass to be a conductor, semiconductor, or an insulator? How can you support this? It would be helpful to draw some bands. After a length of time, the farmer glanced back at his bed and found his wife no longer supplanted between the sheets. Water rushed through the copper pipes surrounding the interior of his house and steam began to drift across the ceiling from the bathroom to the bedroom. Knowing that soon breakfast would be made, he hurried to the kitchen, stopping in the living room only once to make a passing glance through a blue window. But stopping once was enough; he squinted as he made out three, blue-tinted gentlemen off in the distance, small as specks but brilliantly colored like copper in its second oxidation state. 2. Would you expect this blue glass to be a p-type doped glass or a n-type doped glass? How would you explain this? It would be helpful to draw some bands and imagine how light interacts with the bands. (Glass isnt really doped in this way, by the way.) isnt really doped in this way, by the way....
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This test prep was uploaded on 02/15/2008 for the course CHEM 2070 taught by Professor Chirik,p during the Fall '05 term at Cornell University (Engineering School).

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Review02 - Review Session of Jason S. Kong Wednesday,...

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