It is a graphical explanation of a blackbody's emissive power and radiation wavelength at various temperatures. We know blackbody emissions are temperature specific. And a blackbody graph is an overall variation of a blackbody's emissive power as a function of wavelength measured at different temperatures. But the Wien displacement law graph focuses on spectral intensities of blackbody emissions as a function of wavelength at a peak wavelength state λmax at a specific temperature T.

1. Wien displacement law graph
If E1, E2, and E3 are
emissive power
magnitudes at
temperatures T1, T2,
and T3. When
E1<E2<E3, then
T1<T2<T3 exhibiting
their directly varying
relationship.
If λm1, λm2, and λm3
are the maximum
intense wavelengths
of emitted blackbody
radiation at T1, T2, and
T3. When T3>T2>T1,
then λm3<λm2<λm1.
It points out their
inversely changing
connection.
The graph between the intensity and wavelength of emitted
thermal electromagnetic radiations shows a distorted linear
decline from higher temperatures due to a decrease in their
wavelength. Next is a graph between the fourth root of radiation
intensity with wavelength. It exhibits a steep linear decrease in
radiation wavelengths for λmax peaks having higher temperatures.
The Wien displacement law
graph is discontinuous at
lower temperatures for longer
radiation wavelengths. As a
result, it gives approximate
results at longer radiation
wavelengths.
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