Now there is a nice and easy, down and dirty test to see whether the
Subshell Switching theory of Superconductivity is true or false.
Remember the theory is that niobium superconducts at 9 K because it
switches subshells from that of 4d4, 5s1 to that of 4d5, 5s0 (or
perhaps 4d3, 5s2.
So the experimental test would be to actually see if niobium switches
subshells in the actual act of superconduction of niobium.
Is it possible to measure for subshells in the midst of
superconductivity in action? I doubt it. But maybe some is clever
enough to find a way to measure the subshells during
Now in compounds of superconductivity, the Subshell Switch theory says
that one of those elements of the compound does the Subshell Switch
and the other atoms of the compound unit cell serve to stabilize the
specific atom that subshell switches.
So in elemental superconductivity, all the atoms subshell switch, but
in compounds, only a particular atom subshell switches.
But I doubt we can measure for subshell switching in the midst of
whole entire Universe is just one big atom
where dots of the electron-dot-cloud are galaxies