modified:   phy487/twoAtomBasisLatticeDemoV2workingVersion.nb

have the tick logic restored, and the mass scalar array logic in place.
new file:   misc/listOfRulesSparseArrayOperationsTest.nb
modified:   phy487/twoAtomBasisLatticeDemoV2workingVersion.nb

   Got all the physical constants selection logic in place.
   Next: plot the springs again.