hydrogen densities approaching1024/cc
There are good jokes and bad ones. This one I don't even rate...
I consider rather the possibility of a kind of cycloidal trajectory for them.. it seems to be linked with the quark behavior which isn't to me currently enough well understood.
The cycloid used the proper way is a good explanation for internal to external wave length relation. EM flux can transfer energy in harmonic relations. The anchor factors are the half lives of the intermediate states and the asymmetry between in/out flux of never equal quanta.
If you add a quanta to a coherent state of many atoms its weight increases hence the next resonant photon must be a bit heavier. The larger - the more extended - the coherent state, the smaller this effect is.