This applies in case all temperature differences are removed and no heat engines can operate. There is seen no condition in which an entropy reversal can occur. As a matter of fact, an entropy reversal occurs in every case of nuclear disruption. The so-called dark spaces in the universe are areas that tend to absorb any radiation that enters. The absorption of photon energy must increase the disorder since photons were recognized as a source of disorder in the original atom.
Uncharged matter is composed of neutrons, protons, and electrons to provide electrical neutrality.
Since the neutron is the basic unit, we limit our analysis to the neutron only. When it disrupts, a group of mesons are formed. These mesons are not stable. The meson may be neutral or it may have either a positive or a negative charge. In the case of the charged meson, it expels its charge and decays with the emission of radiant energy.