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b) The cosmic microwave background dates to a time when the universe was -380,000 years old, or to a z = 1100. The blackbody temperature then was ~3,000 K. Show that today the CMB temperature should be 2.725 K.

b) The cosmic microwave background dates to a time when the universe was -380,000 years old, or to a z = 1100. The blackbody temperature then was ~3,000 K. Show that today the CMB temperature should be 2.725 K.

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b) The cosmic microwave background dates to a time when the universe was ~380,000 years old, or to a z = 1100. The blackbody temperature then was -3,000 K. Show that today the CMB temperature should be 2.725 K.
Transcribed Image Text:b) The cosmic microwave background dates to a time when the universe was ~380,000 years old, or to a z = 1100. The blackbody temperature then was -3,000 K. Show that today the CMB temperature should be 2.725 K.
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