Use Wiens law (see ) to answer the following questions:
Chapter , Problem 38(choose chapter or problem)
Use Wiens law (see 37) to answer the following questions: (a) The cosmic background radiation peaks in intensity at a wavelength of 1.1 mm. To what temperature does this correspond? (b) About 379 000 y after the big bang, the universe became transparent to electromagnetic radiation. Its temperature then was 1.5 " 104 ly 2970 K.What was the wavelength at which the background radiation was then most intense?
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