BlackbodyHandoutAnswers08

BlackbodyHandoutAnswers08 - Chem 1403 Fall 2008 Kathleen...

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Chem 1403 Kathleen Kristian Fall 2008 Answer Key: Blackbody Radiation handout 1. Why do we study the intensity vs. frequency plot for radiation emitted by a blackbody, as opposed to any other object? From the text in the handout, it can be shown that the rate of radiation emitted per unit of area from a blackbody depends only on temperature. The rate of radiation emitted per unit of area from other objects depends on what the object is made of. Using a blackbody eliminates dependence on the composition of the object. 2. On the plot in Figure 18.1(b), which side of the frequency axis corresponds to higher frequencies? Higher energies? Frequency increases to the right on the frequency axis in Figure 18.1(b). Because frequency and energy are directly proportional (E = h ν ), energy also increases to the right on the frequency axis. 3. On the plot in your textbook on p. 525, Figure 12.4, which side of the wavelength axis corresponds to higher frequencies? Higher energies? Wavelength and frequency are inversely proportional (c =
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BlackbodyHandoutAnswers08 - Chem 1403 Fall 2008 Kathleen...

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