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## Homework Statement

The cosmic microwave background radiation has a blackbody type spectrum. Determine its max frequency and the correspondent wavelenght. Verify if found frequency is a microwave frequency and compare with the following curve:

## Homework Equations

Using the Wien Law displacemente, and knowing that CMBR has a thermal black body spectrum at a temperature of 2.725 K. We can easily calculate the wavelength peak and its frequency.

λ

_{max}= 1,06mm

frequency = λ

_{max}/c = 2,83E11HZ

We can verify that the frequency that we obtained corresponds to the microwave frequency.

But when i am comparing with this curve

I just do not know what is the relation of the graphic with the obtained results.

Anybody to help? Help is always appreciated.!!!

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