Here is presented a range of cases in which alpha-emitting nanoparticulates play a key role : the first part involves mathematical and physical deconstruction of two examples of laboratory experiments, on “exciton” physics (dark-to-bright “exciton” conversion, the demonstration shows why “exciton” is a relatively poor concept) and on the anomalous Nernst effect, both recently published in Physical Reviews X; the link of alpha-emitting nanoparticulates with solar storms is then shown; and an ancient legend in medieval literature (the Arthurian cycle) also covered (the physical basis behind the legend is explained - demonstration of the actual production of particularly healthy waters collected by “Merlin” after a battle, of why it is a detoxifiant - geology and etymology being used to locate more precisely the place of the actual battles that inspired the myth - from the Gallic Wars of Julius Caesar).

radioactivity, rational analysis of history, solar storms, climate change, water quality, ancient legends, Julius Caesar, Gallic Wars, colonial history, photon physics, particle physics, excitons, dark-to-bright exciton conversion, anomalous Nernst effect