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Problem #3: Hagen-Rubens relation is a good approximation to describe the dielectric behaviors of metals at long wavelengths. Considering gold with dc electric conductivity of

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Problem \#3: Hagen-Rubens relation is a good approximation to describe the dielectric behaviors of metals at long wavelengths. Considering gold with dc electric conductivity of dc=4.101051cm1 at room temperature (T=300K), please calculate: (a) n and k at the wavelength 0=2000cm1 (i.e., 5m ) (b) total normal emissivity n at the temperatures of 300K and at 600K

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