Comparing this with the general formula that expresses Boltzmann's principle

we arrive at the following conclusion:

If monochromatic radiation of frequency *ν* and energy *E* is enclosed (by reflecting walls) in the volume *v*_{0}, then the probability that at an arbitrary point in time all of the radiation energy located in a part *v* of the volume *v*_{0} is:

Subsequently we conclude:

In terms of heat theory monochromatic radiation of low density (within the realm of validity of Wien's radiation formula) behaves as if it consisted of independent energy quanta of the magnitude *Rβν/N*.

We also want to compare the average magnitude of the energy quanta of the "black body radiation" with the mean average energy of the center-of-mass-motion of a molecule at the same temperature. The latter is ^{3}/_{2}(*R*/*N*)T, and for the average energy of the Energy quanta Wien's formula gives:

The fact that monochromatic radiation (of sufficiently low density) behaves as regards to dependency of entropy on volume like a discontinuous medium that consists of energy quanta of magnitude *Rβν*/*N* suggests we should investigate whether the laws of