In the book "Introduction to the structure of matter" by Brehm and Mullin, page 78. They say "It should be empathized that there is no reason for the peak positions [tex]\mu _m[/tex] and [tex]\lambda _m[/tex] in the respective distributions to be connected by the relation [tex]c=\mu \lambda[/tex]. They are talking about the blackbody frequency and wavelength spectra. On a graph the independent variable would be either [tex]\mu[/tex] or [tex]\lambda[/tex] and the dependent variable, [tex]M_ \mu (T)[/tex] or [tex]M _\lambda (T)[/tex].(adsbygoogle = window.adsbygoogle || []).push({});

I do not understand at all how, for a given temperature, a body would emit a peak of frequency [tex]\mu _m[/tex] that does not correspond to a peak of wavelength given by the formula [tex]\lambda _m =\frac{c}{\mu _m}[/tex].

Can you explain to me what's going on?

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# Black body radiation, question arising from a book

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