# Astronomy

The current peak wavelength of the CMB corresponds to a blackbody of temperature 2.74K. What was the peak wavelength of the CMB when it was emitted? The current redshift of the CMB is z=1100. Give your answer in microns.

Which waveband regime is this?

1. 👍 0
2. 👎 0
3. 👁 315
1. 1.09

1. 👍 0
2. 👎 0
posted by alicia

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